Chemi-Coat Acid Strength has a modified formula which makes it more resistant to acid – up to 98% Sulphuric Acid*.

A one coat high build epoxy resin coating which offers excellent durability and chemical resistance. Provides a superb glossy, hygienic and easily cleaned surface. A single coat is usually sufficient. Very porous surfaces should be treated first with Watco 4 Hour Epoxy Primer.

Watco has developed a range of formulations to offer excellent resistance to chemical spillages.

This one coat, high build, virtually solvent free epoxy resin floor coating, guarantees exceptional wear and offers superior protection for concrete floors.

Also available in Original, Anti-Slip, Cold Cure and Rapid versions.

The Rapid version cures within just 8 hours to withstand light traffic saving on downtime, whilst the Anti-Slip version provides a good level of slip resistance where needed.

Chemi-Coat Cold Cure can be applied in cold conditions down to 5°C.

All grades now carry CE Mark EN1504-2 and have impressive test results for hardness, abrasion, scratch and impact resistance, as well as for adhesion, slip resistance and flexibility. They also offer superior chemical resistance, and have an A+ VOC emissions rating with a low level of VOC.

*Please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for details regarding other chemicals.

Quick Links - Click To Jump To Section:

• Features & Benefits
• Surface Preparation
• Mixing
• Test Results
• Chemical Resistance
• Application
• Standard Compliance
• Limitations

Features & Benefits

• Also available in Original, Anti-Slip, Cold Cure and Rapid versions
• Areas of use include any area where chemicals are stored or used, chemical bund areas
• Interior use - Suitable for walls and floors
• One coat, high build 100% solids epoxy resin coating – gives excellent chemical and wear resistance with just one coat
• Glossy, attractive, easily cleaned finish
• Low odour – safe to use in confined spaces
• Approved for use on sand and cement screed or concrete with under floor heating systems (up to 30°C surface temperature)
• Superior performance demonstrated by ISO testing to CE Mark EN1504-2
• Suitable for use on concrete, metal or previously painted surfaces

Surface Preparation

Bare concrete – remove surface laitance, dust and any light dirt or grease deposits using Watco Etch & Clean. Watco Etch & Clean also etches smooth, bare concrete surfaces to provide a key. Flush with clean water and allow surface to dry. For the removal of heavier deposits of oil and grease we recommend Watco Concroff, again, flush with clean water and allow the surface to dry.

New Concrete – as a guide, new concrete should be left for eight weeks to dry (if the application must go ahead before this, use Watco New Concrete Primer). The surface should then be prepared using Watco Etch & Clean and thoroughly rinsed away and left to dry prior to applying this coating

Painted surfaces – abrade to remove any weak or loose paint. Check remaining paint is well bonded. Very smooth, glossy paint should be lightly abraded to provide a key. Watco Bio D can be used to remove grease and oil from painted surfaces. Watco Concroff is a very powerful degreaser for contaminated bare concrete, (do not use on a previously painted surface since it can soften paint).

Priming – is not usually required, but for open textured, or very porous high suction surfaces, such as sand and cement screed, use Watco 4 Hour Epoxy Primer to ensure a uniform finish and to prevent air entrapment bubbles. Very smooth or power floated concrete should be primed with Watco Powerfloat Primer.

Metal - remove any rust and flaking material by disc grinding or wire brushing. Apply the coating immediately after preparation to the clean metal surface. Grease or oil can be removed using Watco Bio D. Allow the metal to dry before coating.

Galvanised Metal – Watco Galvaprime must be used to prepare galvanised metal.

Non-ferrous Metals - for advice, please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected].

Mixing

• Remove the two inner tins from the tall outer tin
• Stir the contents of each tin thoroughly and pour all of the contents into the outer tin, (scrape around the inside of the tins to remove any residue)
• Mix the components together thoroughly using a spatula or similar wide bladed tool, (a piece of wooden batten is ideal) and do not thin
• Continue mixing until an even consistency is obtained
• Do not mix more than one pack at a time
• If a paint stirrer fitted to an electric drill is used, also use the spatula to blend in any unmixed material from the sides and bottom of the tin
• Please note: In the anti-slip version the slip resistant particles are already pre-blended (in the Curing Agent)

Test Results

• Abrasion Resistance ISO 5470-1 - 166mg
• Impact Resistance ISO 6272 - CLASS 2
• Scratch Resistance ISO 4586-2 - 7N
• Adhesion Test ISO 2409 - CLASS 1
• Adhesion Test EN 1542 - 4.5MPa/Nmm²
• Flexibility ISO 1519 - 2mm
• Gloss Value - High Gloss 98
• Wolff-Wilborn Hardness Test - 9H
• Water Permeability EN 1062-3 - W₃
• Slip Resistance BS7976-2 - 31 PTV
• Chemical Resistance - Excellent (see Chemical Resistance below)

Chemical Resistance

Results shown are for tests with commonly used chemicals:

(Advice can be given for chemicals not listed here)

Petrol, 25% Lactic Acid, Diesel Fuel, 10% Hydrochloric Acid, Xylene, 10% Nitric Acid, Salt. 25% Sulphuric Acid, White Spirit, 20% Phosphoric Acid, Bleach, 10% Citric Acid, 20% Ammonia, 20% Caustic Soda, Anti Freeze, Sugar Solutions, Mineral Oil, 10% Oxalic Acid, Detergents, 5% Acetic Acid, Methylated Spirits.

Please note: Avoid permanent immersion.

Chemi-Coat Acid Strength also offers resistance to the additional chemicals below:

Chemi-Coat acid Strength Rating Key (at 25°C):

• 0 = No effect
• 1 = Stains/Dulls
• 2 = Blisters
• 3 = Lifts Film

Acetic Acid 98% (0-1), Ammonia 28% (0), Brake Fluid (0), Calcium Chloride 10% (0), Diesel (0), Formic Acid 38% (1), Petrol (0), Hydrochloric Acid 37% (0), Hydrofluoric Acid 48% (0-1), Nitric Acid 30% (1), Phosphoric Acid 25% (1), Sulphuric Acid 98% (0-1), Xylene (0), Skydrol (0-1).

Application

Important – once the contents of the pack have been mixed, a chemical reaction takes place which creates heat, the product should therefore be decanted into a shallow tray to avoid reducing the pot life and used straight away.

Best results are obtained in warm (minimum of 15°C), dry conditions with good ventilation. Apply one coat with a medium pile roller, (not foam), working well into the surface of the concrete. On vertical surfaces 2 thin coats are recommended. Do not exceed the maximum coverage of 18m² per 4 litre pack. Do not wash or allow water to lie on the surface for at least 7 days.

Standard Compliance

• EN 1504-2
• BREEAM Compliant
• Low VOC level (35g/litre)
• ISO 16000
• REACH Compliant

Limitations

• Most self-levelling compounds cannot be painted – please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for details
• Unsuitable for asphalt
• Painting chequer plate can be a problem since coatings can wear prematurely off the ‘high spots’
• Do not apply to damp surfaces