Classico Limewash

Limewash Paint

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ROMABIO Classico Limewash is an authentic slaked-lime paint – ideal for creating unique white wash off effects on brick, stone, and most other masonry surfaces. To see photos and learn more, visit

Easy, one coat process with no additional primer needed. Can be applied with Romabio Large Masonry Brush or a traditional paint sprayer. Masonry surfaces should be dampen prior to application of 1st coat. Below is a video with how-to instructions for the exterior. To see more videos, visit






Now that you have selected Classico Limewash for your project, here is what you need to get started painting.

Get Your Tools

Classico Limewash can be applied with a large masonry brush or a traditional sprayer like any traditional paint. To create the wash off effect on the exterior you will need a garden hose or pressure washer. For the interior, you will need a spray bottle. We recommend you review the videos for application instructions or call us for more information. You will also need a separate mixing bucket to dilute with water before usage.


Mixing With Water

Romabio Lime Paints require water to be added prior to usage. Why?

  • Allows for a cleaner product by not having to add toxic stabilizers, and
  • Reduces our carbon footprint by up to 40%.

Mixing with water or diluting the product with water is as simple as pouring the concentrated paint into a separate, clean mixing bucket, adding the amount of water listed below (dilution rate), then using a paddle drill or a spatula to mix thoroughly. You should mix for 2 – 4 minutes until there is uniform consistency with no standing water.

BioCalce Classico Dilution Rate 1 Liter 2.5 Liter 15 Liter
White Base 100% 1 lt 2.5 lt 15 lt

Prime the Surface

Properly prepare the surface and use the Recommended Primers for your surface type. Masonry surfaces should be damp prior to application of 1st coat. More details can be find on the previous tab, product TDS, or on the back of the bucket.

Start Painting

One coat is recommended for antique limewash finishes. Product should be applied and then washed off once it starts to dry and is not dripping – depending on weather and direct sunlight this can be anywhere from 10 minutes to a couple of hours.

Fix it if you do not like it

The great thing about using BioCalce Classico for antique limewash effects is it is reversible in the first 5 – 7 days after the initial application. You can remove it with a pressure washer or use househould vinegar to help. Then reapply to your desired look.

Testing & Certification

Coming Soon ...

We will have 3rd party testing for all of our products but please be patient as we are a growing company.

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Criteria Int. Standard Value Unit
TVOC & VOC (including tint pigments) 2004/42/CE 3.9 g/l
Water Absorption Coefficient EN 1062-3 0.18 kg/(m²•√h)
Vapor Permeability DIN 52615 - DIN 18550 EN ISO 7783-2 Sd 0.10 m
pH Value DIN 19266 13
Natural Resistance to Mold UNI 9805 – UNI 10795 OK
Specific Gravity (23°C) EN ISO 2811-2 1.3 g/ml
Mineral Finish DIN 55945 < 3.5% Thickening Agent
Granulation DIN 19643 0.01 mm
Gloss Level UNI EN ISO 2813 < 5 Very Flat
Natural Paint Lime Base NHL 3.5 DIN 18363 – UNI EN 459 10 %
Reaction to Fire EN 13501-1:2002 A 1 Incombustible
RA-226 Politecnico di Milano- 7.0 ± 1.1 Bq/kg
Th-232 High Resolution Gamma 1.0 Bq/kg
K-40 Spectroscopy Results < 5 Bq/kg
Radon I < 1 Politecnico di Milano - Radiation Protection 112 (UE, 1999) 0.24 I
Toxicity CEE 88/379 Non-Toxic
Environmental Impact Certification CEE 880/92 – CEE 1980/2000 C.C.A N° 201230/a-b
APEO (Alkyl Phenol Ethoxylates) 0%
PEG (Polyethylene Glycol) 0%
PG (Propylene Glycol) 0%
Formaldehyde 0%
Biocides 0%



1 Identification of the Substance/Mixture & Of the Company/Undertaking

1.1 Product identifier

Code     None
Product Name     BioCalce Classico

1.2 Relevant Identified Uses of the Substance or Mixture & Uses Advised Against

Mineral Paint Based on Mined and Aged Fat Lime

1.3 Details of the supplier of the safety data sheet

  • Name ROMA – Eco-Sustainable Building Technologies
  • Full Address 554 North Avenue NW, Suite B
  •  District & Country Atlanta, GA 30318 | United States of America (USA)
  •  678-905-3700

1.4 Emergency Telephone Number

For Urgent Inquiries Refer To      Call 911 if you have a poison emergency.
Call the CDC if swallowed but person is alert 1-800-222-122

2 Hazards identification

2.1 Classification of the substance or mixture

The product is classified as hazardous pursuant to the provisions set forth in Directives 67/548/EEC and 1999/45/EC and/or EC Regulation 1272/2008 (CLP) (and subsequent amendments and supplements). The product thus requires a safety data sheet that complies with the provisions of EC Regulation 1907/2006 and subsequent amendments.

Any additional information concerning the risks for health and/or the environment are given in sections 11 and 12 of this sheet.

  • Danger Symbols     Xi, C
  • R Phrases     35 – 37

The full wording of the Risk (R) and hazard (H) phrases is given in section 16 of the sheet.

2.2 Label elements

Hazard labeling pursuant to Directives 67/548/EEC and 1999/45/EC and subsequent amendments and supplements.


  • R36/38     Irritating To Eyes And Skin.
  • S1/2    Keep Locked Up and Out of the Reach of Children.
  • S26    In Case Of Contact with Eyes, Rinse Immediately with
  • Plenty of Water and Seek Medical Advice.
  • S36/37/39    Wear Suitable Protective Clothing, Gloves and Eye/Face Protection.
  • S45    In Case of Accident or if you Feel Unwell, Seek Medical Advice Immediately (Show the Label Where Possible).

2.3 Other hazards


  • R35     Causes Severe Burns To Eyes.
  • R37     Irritating to Respiratory System.

3 Composition/Information on Ingredients

3.1 Substances

Information not relevant.

3.2 Mixtures

Identification Conc. % Class. 67/548/EEC Class. 1272/2008 (CLP)
Silicic Acid, Potassium Salt
CAS      – 40 – 42.5 Xi R38, Xi R41
EC        –
Calcium Carbonate
CAS   471-34-1 Xi R37/38, Xi R41 Eye Dam. 1 H318, Skin Irrit. 2 H315,
STOT SE 3 H335
EC     207-439-9

T+ = Very Toxic (T+), T = Toxic(T), Xn = Harmful (Xn), C = Corrosive (C), Xi = Irritant (Xi), O = Oxidizing (O), E = Explosive(E), F+ = Extremely Flammable(F+), F = Highly Flammable(F), N = Dangerous for the Environment (N)

The full wording of the Risk (R) and hazard (H) phrases is given in section 16 of the sheet.

First aid measures

4.1 Description of first aid measures

No harm to the staff authorized to use has been reported. However, in case of contact, inhalation or ingestion, the following general measures provided for a first aid shall be taken.

  • EYES     Irrigate copiously with clean, fresh water for at least 15 minutes. Seek medical advice.
  • Skin     Wash immediately with plenty of water. Remove contaminated clothing. If irritation persists, seek medical attention. Wash contaminated clothing before using them again.
  • Inhalation     Remove to open air. If breathing is irregular, seek medical advice.
  • Ingestion     Obtain immediate medical attention. Induce vomiting only if indicated by the doctor. Never give anything by mouth to an unconscious person.

4.2 Most important symptoms & effects, both acute & delayed

For symptoms and effects caused by the contained substances see chapter 11.

4.3 Indication of any immediate medical attention & special treatment needed

Follow doctor’s orders.

5 Firefighting measures

5.1 Extinguishing media


The extinction equipment should be of the conventional kind: carbon dioxide, foam, powder and nebulized water.


None in particular.

5.2 Special hazards arising from the substance or mixture


Do not breathe combustion products (carbon oxide, toxic pyrolysis products, etc.).

5.3 Advice for firefighters


Use jets of water to cool the containers to prevent product decomposition and the development of substances potentially hazardous for health. Always wear full fire prevention gear. Collect extinguishing water to prevent it from draining into the sewer system. Dispose of contaminated water used for extinction and the remains of the fire according to applicable regulations.


Hardhat with visor, fireproof clothing (fireproof jacket and trousers with straps around arms, legs and waist), work gloves (fireproof, cut proof and antistatic), a depressurized mask with facemask covering the whole of the operator’s face or a self-respirator (self-protector) in the event of large quantities of fume.

6 Accidental Release Measures

6.1 Personal precautions, protective equipment & emergency procedures

If there are no contraindications, spray powder with water to prevent the formation of dust. Use breathing equipment if powders are released into the air.

6.2 Environmental Precautions

The product must not penetrate the sewers, surface water, ground water and neighboring areas.

6.3 Methods & Material for Containment & Cleaning Up

Use mechanical tools to collect leaked product and eliminate the remainder using jets of water. Make sure the leakage site is well aired. Contaminated material should be disposed of in compliance with the provisions set forth in point 13.

6.4 Reference to other sections

Any information on personal protection and disposal is given in sections 8 and 13.

7 Handling & Storage

7.1 Precautions for safe handling

Store in closed, labeled containers.

7.2 Conditions for Safe Storage, Including Any Incompatibilities

Normal storage conditions without particular incompatibilities.

7.3 Specific End Use(s)

Information not available.

8 Exposure Controls/Personal Protection

8.1 Control Parameters

Name Type Country TWA/8h STEL/15min
mg/m3 ppm mg/m3 ppm
Calcium Carbonate

8.2 Exposure controls

As the use of adequate technical equipment must always take priority over personal protection equipment, make sure that the workplace is well aired through effective local aspiration or bad air vent. If such operations do not make it possible to keep the concentration of the product below the permitted workplace exposure thresholds a suitable respiratory tract protection must be used. See product label for hazard details during use. Ask your chemical substance suppliers for advice when choosing personal protection equipment. Personal protection equipment must comply with the rules in force indicated below.


Protect hands with category III (ref. Directive 89/686/EEC and standard EN 374) work gloves, such as those in PVA, butyl, fluoroelastomer or equivalent. The following should be considered when choosing work glove material: degradation, breakage times and permeation. Work glove resistance to preparations should be checked before use, as it can be unpredictable. Gloves` limit depends on the duration of exposure.


Wear hood visor or protective visor together with airtight goggles (ref. Standard EN 166).


Wear category III professional long-sleeved overalls and safety footwear (ref. Directive 89/686/CEE and Standard EN 344). Wash body with soap and water after removing overalls.


If the threshold value for one or more of the substances present in the preparation for daily exposure in the workplace or to a fraction established by the company`s prevention and protection service is exceeded, wear a mask with an A or universal filter, the class (1, 2 or 3) of which must be chosen according to the limit concentration of use (ref. standard EN 141).

The use of breathing protection equipment, such as masks with organic vapour and dust/mist cartridges, is necessary in the absence of technical measures limiting worker exposure. The protection provided by masks is in any case limited.

If the substance in question is odourless or its olfactory threshold is higher than the relative exposure limit and in the event of an emergency, or when exposure levels are unknown or the concentration of oxygen in the workplace is less than 17% volume, wear self-contained, open-circuit compressed air breathing apparatus (ref. Standard EN 137) or fresh air hose breathing apparatus for use with full face mask, half mask or mouthpiece (ref. Standard EN 138).

An emergency eye washing and shower system must be provided.

9 Physical & Chemical Properties

9.1 Information on Basic Physical & Chemical Properties

Appearance White Pulp
Color White
Odor Characteristic
Odor Threshold
pH 13
Melting or Freezing Point
Boiling Point
Distillation Range
Flash Point > 61°C
Evaporation Rate
Flammability of Solids & Gases
Lower Inflammability Limit
Upper Explosive Limit
Lower Explosive Limit
Vapor Pressure
Vapor Density
Specific Gravity 1,300 Kg/l
Solubility Acqua
Partition Coefficient: Octanol/Water
Ignition Temperature
Decomposition Temperature
Reactive Properties

9.2 Other information

VOC (Directive 2004/42/EC) 0.40% – 5.20 g/lt
VOC (Volatile Carbon)

Matt coatings for interior walls and ceilings. EU limit value for this product

(cat. A / a): 75 g/l (2007) / 30 g/l (2010).

10 Stability & Reactivity

10.1 Reactivity

There are no particular risks of reaction with other substances in normal conditions of use.

10.2 | Chemical stability

The product is stable in normal conditions of use and storage.

10.3 Possibility of Hazardous Reactions

No hazardous reactions are foreseeable in normal conditions of use and storage.

10.4 Conditions to Avoid

None in particular, however the usual precautions used for chemical products should be respected.

10.5 Incompatible Materials

Information not available.

10.6 Hazardous Decomposition Products

In the event of thermal decomposition or fire, vapours potentially dangerous to health may be released.

11 Toxicological information

11.1 | Information on Toxicological Effects

This product is corrosive and causes serious burns and vesicles on the skin, which can arise even after exposure. Burns are very stinging and painful. Upon contact with eyes, it may cause serious harm, such as cornea opacity, iris lesions, irreversible eye coloration. Possible vapours are caustic for the respiratory system and may cause pulmonary edema, whose symptoms sometimes arise only after some hours. Exposure symptoms may include: sting, cough, asthma, laryngitis, respiratory disorders, headache, nausea and sickness. If swallowed, it may cause mouth, throat and oesophagus burns, sickness, diarrhoea, edema, larynx swelling and, consequently, asphyxia. Perforation of the gastro-intestinal tract is also possible.


  • LD50 (Oral)     6450 mg/kg Rat

12 Ecological Information

Use this product according to good working practices. Avoid littering. Inform the competent authorities, should the product reach waterways or sewers or contaminate soil or vegetation.

12.1 Toxicity

Information not available.

12.2 Persistence & Degradability

Information not available.

12.3 Bioaccumulative Potential

Information not available.

12.4 Mobility in soil

Information not available.

12.5 Results of PBT & vPvB assessment

Information not available.

12.6 Other Adverse Effects

Information not available.

13 Disposal considerations

13.1 Waste treatment methods

Reuse, when possible. Product residues should be considered special hazardous waste. The hazard level of waste containing this product should be evaluated according to applicable regulations.

Disposal must be performed through an authorized waste management firm, in compliance with national and local regulations.


Contaminated packaging must be recovered or disposed of in compliance with national waste management regulations.

14 Transport information

The product is not dangerous under current provisions of the Code of International Carriage of Dangerous Goods by Road (ADR) and by Rail (RID), of the International Maritime Dangerous Goods Code (IMDG), and of the International Air Transport Association (IATA) regulations.

 15 Regulatory information

15.1 Safety, health & environmental regulations/legislation specific for the substance or mixture

Seveso Category     None






Workers exposed to this chemical agent must not undergo health
checks, provided that available risk-assessment data prove that the
risks related to the workers’ health and safety are modest and that
the 98/24/EC directive is respected.


Exterior walls of mineral substrate.
VOC given in g/litre of product in a ready-to-use condition

  • Limit Value     40.00 (2010)
  • VOC of Product     5.20

15.2 Chemical safety assessment

No chemical safety assessment has been processed for the mixture and the substances it contains.

16 Other information

Text of hazard (H) indications mentioned in section 2-3 of the sheet

  • Eye Dam. 1 Serious eye damage, category 1
  • Skin Irrit. 2 Skin irritation, category 2
  • STOT SE 3 Specific target organ toxicity – single exposure, category 3
  • H318 Causes serious eye damage.
  • H315 Causes skin irritation.
  • H335 May cause respiratory irritation.

Text of risk (R) phrases mentioned in section 2-3 of the sheet:

  • R35 Causes Severe Burns.
  • R37 Irritating to Respiratory System.
  • R37/38 Irritating to Respiratory System and Skin.
  • R38 Irritating to Skin.
  • R41 Risk of Serious Damage to Eyes.


  1. Directive 1999/45/EC and following amendments
  2. Directive 67/548/EEC and following amendments and adjustments
  3. Regulation (EC) 1907/2006 (REACH) of the European Parliament
  4. Regulation (EC) 1272/2008 (CLP) of the European Parliament
  5. Regulation (EC) 790/2009 (I Atp. CLP) of the European Parliament
  6. Regulation (EC) 453/2010 of the European Parliament
  7. The Merck Index. – 10th Edition
  8. Handling Chemical Safety
  9. Niosh – Registry of Toxic Effects of Chemical Substances
  10. INRS – Fiche Toxicology (toxicological sheet)
  11. Patty – Industrial Hygiene & Toxicology
  12. N.I. Sax – Dangerous properties of Industrial Materials-7, 1989 Edition

Note For Users

The information contained in the present sheet are based on our own knowledge on the date of the last version. Users must verify the suitability & thoroughness of provided information according to each specific use of the product.

This document must not be regarded as a guarantee on any specific product property.

The use of this product is not subject to our direct control; therefore, users must, under their own responsibility, comply with the current health & safety laws & regulations. The producer is relieved from any liability arising from improper uses.

Fields of Application

Excellent primer and finish paint made with a high quantity of lime putty, for exterior walls and surfaces, for stone, brick, portland cement stucco, cementitious board, and NHL 3.5 and 5.0 stucco mortars. BioCalce Classico is a lime wash paint that can be applied on masonry surfaces to provide a classical chalk paint finish with the ancient capabilities to carbonize to masonry surfaces providing decades of durability, withstanding most climatic conditions and not capitulate to environmental stress. BioCalce Classico has been formulated form a slow set and permit high dilutions with water. This lime wash is ideal for brick applications for artisan finishes and antique patinas, or for full coverage with no wash off techniques that will not flake or peel. A non-acrylic paint product that provides superior adhesion than typical lime paints.

BioCalce Classico can be applied to directly to all interior non-painted wood species without a primer as a decorative effect that can be easily sanded and manipulated to create ceruse finishes and antique effects.

This paint product is not oil proof, and can be damaged by foods, greases, body oils, color crayons or washable colored markers. Cleaning may damage or change the sheen of the paint.

BioCalce Classico can be used as finish paint for brick, stone, stucco, lime plaster finishes and some wood products.

Product Features

BioCalce Classico is a high quality lime paint ideal for painting brick, stucco, and most masonry surfaces. When applied to virgin surfaces (non-acrylic painted surfaces) this paint will not peel or flake. BioCalce Classico acquires maximum durability when applied on exterior natural masonry surfaces (non-painted surfaces with acrylic paints), for durations of approximately 20 – 30 + years. No guarantee can be provided for all previously painted surfaces that have been painted with an acrylic or oil based paint. This is a historical paint product and has been in use in the United States since the early Colonial period in the early 1700’s.

A 100% natural mineral product, completely permeable, breathable, absorbs CO2, provides good anchoring power with mineral surfaces by carbonization. Provides protection against the formation of bacteria that forms mold. Product is considered an organic product, ideal for use in homes, schools, and hospitals and work sensitive areas.

BioCalce Classico is specifically designed to be tinted with natural oxide earth tints and 0% VOC colorants to increase esthetic color values with minimal impact to the environment and to provide toxic free air quality for indoors. BioCalce Classico is an organic paint material as described in the Bio Category description.

Aesthetic features are extreme flatness, high mineral content, creating unique light refraction capabilities and uncommon luminosity.

Type Of Product

Slaked lime coating according to UNI 8681 with organic stabilizers, less than 3%. No acrylic binders used.

Sheen Finish

Very Flat


White Base. Color tint up to 8% max with approved tints. Custom color tint matching is available.

Application Cycle Instructions

Brush Applications

1ST COAT     Dilute BioCalce Classico with 50% water, 7.5 liters of water per one (1) 15-liter bucket to 120% dilution, 18 liters of water per one (1) 15-liter bucket. For brick or stucco it is suggested to dampen previously all masonry surfaces with water thoroughly, so as to assist lime wash paints to absorb deeper into the masonry surface. Do not apply paint to overly wet surfaces. Allow 1st coat to dry for at least 2 – 8 hours before applying 2nd coat. Brush, roll or spray the first coat. Using a large brush and painting by hand will create the best results. BioCalce Classico can be applied to non-acrylic painted natural mineral surfaces such as stone, brick, stucco, lime plasters and lime paints, without the use of a primer. For interior or exterior applications where the base to be painted is a non-mineral surface (i.e., acrylic paint, sheetrock), apply 1 coat of BioGrip Micro or Medium, and allow to dry for 8 – 12 hours prior to application of 1st coat BioCalce Classico. Interior applications can be performed on virgin wood.

2ND COAT     Apply BioCalce Classico diluted with 50% water, 7.5 liters of water per one (1) 15-liter bucket to 120% dilution, 18 liters of water per one (1) 15-liter bucket. Apply with brush when possible. Painting with a brush in a crisscross pattern will create a very slight natural chromatic finish. Allow 2nd coat to dry for at least 1 – 4 hours before applying a 3rd coat.

3rd COAT     For wash or glaze affects BioCalce Classico can be diluted from 150% – 200% with water. Extreme dilutions for the exterior should be applied on 1st or 2nd base coats only.

Roller Applications

This product is not recommended for roller applications.

Paint Sprayers

1ST COAT     BioCalce Classico is a non-aggregate paint and can be used in most airless sprayers. Dilute BioCalce Classico with 50% water, 7.5 liters of water per one (1) 15-liter bucket to 120% dilution, 18 liters of water per one (1) 15-liter bucket when applying paint to achieve a full coverage finish. For brick or stucco it is suggested to dampen previously all masonry surfaces with water thoroughly, so as to assist lime wash paints to absorb deeper into the masonry surface. Do not apply paint to overly wet surfaces. Allow 1st coat to dry for at least 2 – 8 hours before applying 2nd coat. For interior or exterior applications where the base to be painted is not a mineral surface, apply 1 coat of BioGrip Primer Micro or Medium, and allow to dry for 12 hours prior to application of 1st coat BioCalce Classico. Particular care must be taken when using a sprayer on brick or stucco to apply product abundantly, without causing paint runs, so as to permit proper millage thickness for longer durability.

2ND COAT     Dilute BioCalce Classico with 50% – 120% water, and apply as instructed above for 1st coat.

SPRAY TIP USAGE     BioCalce Classico may be applied using an airless sprayer. Apply paint product with a # 0.019 – 0.021 mm size spray tip. Always use new spray tips for starting a paint job for best results. This will also conserve the amount of paint necessary to complete the job.

GRAIN SIZE     0.01 mm

Mixing Paints & Water

Most of our paint formulas are concentrated and require water to be added to them for proper use. This process means we can sell more coverage in an economical package that decreases the cost for transport, reduces the carbon footprint, helping the your pocket book and the environment.

Mix paint and water with an electric drill and paint paddle, or mix well by hand! If water is sitting on the top of your mixture, the paint is not properly mixed!


Apply with brush or with an appropriate sprayer and sprayer tip.

Drying Time

Allow a drying time between coats of at least 2 – 8 hours for the 1st coat, and with successive coats allow at least 1 – 4 hours between coats. With lower temperature and humidity more time may be needed.

Do not apply BioCalce Classico on the exterior if there is a risk of thunderstorms or showers during the 12-hour drying time needed for product to dry and carbonize correctly.


Approximately 1,000 ft2 / 93 mt2 – 2,000 ft2 / 130 mt2 depending on absorption and type of base. Determine exact consumption by performing a test on the surface to be treated.


Plastic buckets of 1, 5 and 15 liters.

Application Cycles on Different Types of Bases

Make sure base is solid, dry and well cleaned, prepared with skill. It is recommended to observe the rule VOB DIN 18 363, Part C, paragraph 3.

New Sheetrock

It is not suggested to use BioCalce Classico on sheetrock. For application on sheetrock use BioCalce A.

Painted Sheetrock

It is not suggested to use BioCalce Classico on painted sheetrock. For application on sheetrock use BioCalce A.

Apply BioGrip Micro diluted 40% with water, 6 liters water to one (1) 15-liter bucket. BioGrip Primer may be tinted for light and medium colors. Apply final paint finish with BioCalce Classico according to instructions.

Unpainted Wood

BioCalce Classico can be used as a historical and decorative finish on new or reclaimed wooden beams, wood trim, wood ceilings and even wood floors. Application of BioCalce Classico on wood should not be used on exterior surfaces that are exposed to rain or water, as this may result in the removal of the lime wash or cause the tannins or resins in many woods to discolor the patina.

Interior Wood & Beams

Dilute BioCalce Classico lime wash at 120% maximum and apply with a brush. Test product before application to verify finish and technique to create the desired result. For oak or pine species of wood, careful attention must be given to assure that moisture from the lime wash will not release undesirable discoloration from tannins or resins. Once the lime wash has completely dried remove the desired amount of lime wash using steel or brass brushes, pads or steel wool to create antique finishes. For non-antique finishes, no removal is required. To create greater density of lime, apply a 2nd coat of lime wash, or reduce the dilution with water to 50% for the 1st coat.

Stain Blocking Primers

If problems arise from discoloration due to resins or tannins, it is suggested to seal the beams with EcoCer Varnish Matte diluted at 40% to reduce this affect, or apply an alcohol based shellac or approved white base primer with stain blocking capabilities.


To fix the lime wash permanently to reduce powdering or permit handling after application of lime wash apply TerraMare Velatura, diluted at 300% – 500% with water and apply sparingly on wood surface, then removing quickly, lightly but deliberately, all excess diluted material with a soft damp rag. TerraMare Velatura is an absolute requirement for lime wash finishes if varnish is desired to be applied as a final finish coat on lime wash finishes.


A varnish can be applied on properly prepared lime wash, but only when the lime wash has been thinly applied, and only after TerraMare Velatura has been applied as a consolidator. Thickly applied lime wash cannot be treated with varnish as a final coat. Dilute EcoCer Varnish Matte or Satin for 1st coat, 40% with water, 4 liters of water to one (1) 10 liter bucket of product. Apply to finished surface by brush and allow to dry for 4 – 8 hours. Dilute the 2nd coat of EcoCer Varnish, 20% with water, 2 liters of water to one (1) 10-liter bucket of product. Apply to finished surface by brush and allow to dry for 8 hours before handling.

There are many ways to create lime wash patinas and finishes, and it is advised to test product use and finishes prior to commencement of application of any wood product.

Cementitious Board

It is not advised to use BioCalce Classico for application on cementitious boards.

Stone & Brick Washes


When applied to natural mineral surfaces such as stone, brick, or NHL 3.5 cements BioCalce Classico can be applied as a wash, diluting with water 120% – 200%, applying on a wetted surface, applying in a crisscross pattern with a large lime brush. For applications on portland cement stuccos apply one (1) coat of BioGrip Micro diluted with water 30%, and allow to dry for 8 – 12 hours before application of BioCalce Classico as a wash.

BioCalce Classico is the product most adapted for use to create antique effects on brick by washing off lime paint with sufficient water pressure as it begins to draw or pull. This is a very popular application, but it is not recommended to be applied except by a trained professional. Technique requires sufficient damping of existing un-painted brick to permit a slow set with the application of BioCalce Classico, which must be diluted with water between 100% – 150%, to permit sufficient lime paint material to remain, and yet with washing by an adjustable spray hose with at least 55+ PSI pressure, remove the amount of desired material without over or under washing. Often times 2 – 3 types of dilution are recommended to create the desired effect, requiring several coats, with sufficient drying time in-between. Correct application and removal will provide a historical washed paint effect for new or existing construction. Testing must be determined by several attempts at different dilutions of lime paint with water, as well as surface heat conditions, water pressure, and type of spray tip (wide or narrow), to remove the correct amount of lime paint to create an accurate historical effect. Applications should not be performed in temperatures below 70°F / 21°C or above 90°F / 32°C. This type of paint application and removal requires an expert in the use of lime paints as well as an artistic capacity and an intuitive mindset.

Washes on Paint

Dilute BioCalce Classico with 50% – 120% with water, applying diluted paint over painted or masonry base to acquire a first coat base. Always wet masonry walls abundantly with water making sure that virgin masonry base has absorbed sufficient water so that lime paint application is not performed on a totally dry base. Apply base coat of lime paint and allow to dry for at least 4 – 8 hours. Follow instructions for washes above to apply diluted lime wash onto lime base. To facilitate ease of application of washes on lime paint base, pre-wet liberally all sections of wall to be painted with water, applying diluted BioCalce Classico as per instructions on damp wall. Re-wet areas of lime wash again as needed, when moving across the surface with diluted lime wash applications. When applying multiple coats allow time between coats to be visually dry before applying a successive coat of wash or paint.


Always wet exterior masonry walls abundantly with water making sure that virgin masonry base has absorbed sufficient water so that lime paint is not applied on a totally dry base. Dilute BioCalce Classico with 100% water, maximum 15 liters of water per one (1) 15-liter bucket of BioCalce Classico, when applying paint to achieve a full coverage finish. Apply a 2nd coat of BioCalce Classico, diluted 50 – 100% with water, depending on the density of lime paint desired for the surface. Always pre-wet 1st coat surface with water abundantly before applying BioCalce Classico on a damp surface to enhance absorption and durability, as well to ease application of lime paint. For wash or glaze effects see directions as indicated in stone and brick washes.

BioCalce Classico cannot be applied to most large flat areas, such as exterior brick floors, without the risk of product deterioration due to freeze-thaw conditions. Brick walls not covered by a roof may create poor conditions for BioCalce Classico to remain integrated with brick because of freeze-thaw conditions that can cause brick to deteriorate rapidly on the surface, pulverizing as a result, thus causing lime paint to deteriorate. This situation can occur on chimneys, thresholds, and brick areas in contact with earth, particularly on the north face, where freezing conditions intensify on wet brick, causing brick to deteriorate rapidly. Brick in constant contact with damp soil may absorb salt nitrates from the earth and this too will cause brick to deteriorate rapidly. Application by a large masonry brush is recommended.

Concrete Floors, Sidewalks or Driveway

BioCalce Classico cannot be used on portland cement based floors, sidewalk or driveways.

New Cement Stuccos

Portland Cements

New Portland cement should not be painted for about 28 days to ensure proper anchoring and drying. Apply 1 coat of BioGrip Micro or Medium diluted 30% with water, 4.5 liters water to one (1) bucket 15 liters of product; allow to dry for at least 12 hours. BioGrip Primer may be tinted with tint for light and medium colors. Apply BioCalce Classico according to instructions. Application by a large masonry brush is recommended.

NHL 3.5 & 5.0 Cements

BioCalce Classico can be applied to wet or damp stucco for maximum effect to intensify durability and create blushing effects. For ease of application apply BioCalce Classico by sprayer covering completely moist stucco cement and allow to dry. A 2nd coat is not required for use in such instances. Apply BioCalce Classico according to instructions.

When NHL 3.5 and NHL 5.0 cements are dry, review instructions in brick section above and follow Application Cycle Instructions above. Most mineral paints and lime paints can be applied directly to Natural Hydraulic Cements without the need to prime with BioGrip Primer. Application by a large masonry brush is recommended.

Decaying or Crumbling Stuccos or Powdery Surfaces

When new stucco repairs are performed on older cement stuccos, apply EcoForte Consolidator diluted 50% with water (2:1), to older surfaces prior to applying new cement stucco. Dirty and/or contaminated surfaces should be cleaned and any attached algae removed manually or by mechanical means, i.e., with a high-pressure washer. Stucco damaged by algae or mold should be treated with EcoDis. Apply EcoForte Consolidator to any new stucco repairs with the same dilution. Apply 1 coat of BioGrip Micro or Medium diluted 30% with water, 4.5 liters water to one (1) bucket 15-liters of product; allow to dry for at least 12 hours. Apply final paint finish with BioCalce Classico according to instructions.

Coatings with Efflorescence

Cement surfaces showing efflorescence should be removed with acid and thoroughly rinsed with water. Apply Potassium Silicate Concentrate, diluted 100% with water (1:1) on all damaged surfaces, applying 2 – 3 coats in rapid succession and allow to dry for at least 12 hours. Apply 1 coat of BioGrip Micro or Medium diluted 30% with water, 4.5 liters water to one (1) bucket 15-liters of product; allow to dry for at least 12 hours. For coatings on surfaces damaged by the saltpeter or efflorescence no guarantees can be provided. Apply final paint finish with BioCalce Classico according to instructions.

Aged Cement Stuccos

When new stucco repairs are performed on older cement stuccos, apply EcoForte Consolidator diluted 50% with water (2:1), to older surfaces prior to applying new cement stucco. Dirty and/or contaminated surfaces should be cleaned and any attached algae removed manually or by mechanical means, i.e., with a high-pressure washer. Stucco damaged by algae or mold should be treated with EcoDis. Apply EcoForte Consolidator to any new stucco repairs with the same dilution. Apply 1 coat of BioGrip Micro or Medium diluted 30% with water, 4.5 liters water to one (1) bucket 15 liters of product; allow to dry for at least 12 hours. Apply final paint finish with BioCalce Classico according to instructions.

Stucco Repairs

See Aged Cement Stuccos above.


Store in a cool, dry and protected from frost. Close the open containers with care. Store liquids only in plastic buckets.


Do not apply any products in direct exposure to strong/hot sunlight, rain, mist, high humidity (> 80%), at dew-point formation, or in the presence of strong wind. Beware of the danger of frost overnight. If applied by roller or sprayer, protect surrounding surfaces as necessary. Protect eyes and skin from splashes of paint. Cover glass, ceramic, natural stone, brick, metal, wood, painted surfaces and glazed tiles. Clean affected areas immediately with water. Prominent elements of the building (cornices, parapets, etc.,) should be treated with skill, covering flashings, gutters, copper coatings, etc. …

Do not work in air temperature lower than 13°C / 55°F and not above 32° C / 90°F. Clean work tools with water immediately after use. Keep out of reach of children. In case of contact with eyes and skin, wash immediately with plenty of water. In cases of consumption, consult a Doctor or call the CDC Poison Center (see Safety Data Sheet).

In case of contact with eyes and skin, wash immediately with plenty of water and/or a saline solution. Always keep a good supply of saline solution for eyes and use abundant amounts to wash eyes. Do not rub eye lids or physically touch your cornea or surrounding area prior to and during washing. Consult a Doctor immediately in cases of irritation or severe burning sensation. In cases of consumption, consult a Doctor or call the CDC Poison Center (see Safety Data Sheet). Keep out of reach of children.

Water Contamination Hazard

CLASS 1     This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations (CPR) and the MSDS contains all of information required by the CPR, and it is classified as a non-hazardous material.

Product Contamination Hazard

CODE CER / NORMATIVE EAC / Decision commuted by the Commission n. 2000/532/CE

NOT DANGEROUS     The directive 75/442/CEE, 08 01 production, disposal, formulation, supply, use, and removal of paints and varnishes: 10 13 04 for removal of paints and varnishes; 10 13 04 disposal of lime and hydrated lime products.


Do not enter product in its original concentration into drains or open waters. Do not store at public waste disposal sites. In case of conduction into adapted biological purification plants no disturbances need be expected. The preparation has been estimated by conventional method (calculated-procedure) of EG directive 1999/45/EG) and is classified as non-hazardous for the environment. Dispose according to local regulations. Empty cans should be disposed of according to local regulations; plastic buckets are 100% PBS, NO. 5, approved for food storage; 100% recyclable if cleaned thoroughly prior to recycling.

Additional Information

This Technical Sheet lists data collected on the basis of technique and experience. Given the multiplicity of use of the product they cannot be binding and the user cannot refrain from using common sense and experience for the individual case. This information shall not constitute any legal obligation and no obligation from the seller or point of purchase, or any agreements inferred by employees who sale this product. Insurance or guarantees issued by our employees or employees should always be confirmed separately in writing. Any information about product adaptability and use of the product, must be verified by user prior to purchase. Check the exact consumption of product for the surface where product may be applied to determine amount of products needed. The user must verify the color matching before starting work.

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