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Safecoat Epoxy Flooring

785 Safecoat Clear provides protection to concrete floors, preventing entry to oil, grease and other contaminents and provides a readily maintained finish in car parks, workshops, factories, and warehouses. 785 Safecoat™ Clear hardens the surface of concrete and eliminates dusting. Resistant to a wide range of chemicals, it can provide an economical and hygenic flooring finish for the chemical, food and beverage, and other industires. 785 Safecoat™ Clear can also be used as a primer/sealer for 790 Safecoat™ over a porous substrate.

785 Patch and Screed (with added aggregate and sand) is normally used to fill holes, cracks and other defects prior to coating floors and walls. It may be ised as a repair mortar for spalling concrete. 785 Safecoat™ can be applied as a skim coat over a rough surfaces to improve overallsmoothness and it may be used to form coves.

790 Safecoat may also be applied as a floor topping of 3 to 6mm (depending on choice of aggregate) to provide an extremely abrasion and chemical resistant floor for heavy traffic and severe conditions
With the aid of formwork, 785 Safecoat™ Clear can be used to form plinths, pedestals, etc. It may also be mixed with Evic lightweight filler for overhead patching, etc.

785 Safecoat is a 100% solids, two-pack epoxy resin binder for sealing or priming concrete or for adding sand or graded aggregate to create a solventless epoxy resin binder for mortars and screeds.

Safecoat provides protection to concrete floors preventing attack by a wide range of chemicals. It will prevent entry of oil, grease and other contaminants and provide a readily maintained finish in undercover carparks, workshops, factories and warehouses. Safecoat™ also resists general staining and provides an economical and hygienic finish which guards against bacteria growth – ideal for processing facilities across many industries. 790 is a pigmented variant available in a range of standard and custom colours, while 785 is a clear product for use as a sealer or mortar for patching concrete.

Safecoat has been designed to be resistant to abrasion and chemicals for interior use. Safecoat is slippery when wet and requires the addition of aggregate included in the “Less Slip” system. Aggregate can be added immediately prior to application or it can be cast over the still-wet first coat. These methods increase surface safety in areas such as ramps, walkways, stair treads and doorways.

790 Safecoat contains no solvents, presents no vapour or fire hazard during application and cures to a non-toxic film suitable for contact with food and beverages.

Suitable for walls and floors, 790 Safecoat has excellent adhesion to most masonry substrates and cures rapidly.

On Floors: 790 Safecoat provides protection to concrete floors, preventing attack by a wide range of chemicals. It will prevent entry of oil, grease and other contaminants and provide a readily maintained finish in car parks, workshops, factories and warehouses. 790 Safecoat resists general staining and provides an economical and hygenic finish for the chemical, and food and becerage industries.

On Walls: 790 Safecoat has good building and filling properties. Being 100% solids, it will not shrink into pinholes, minor cavities or shallow cracks, providing a hygenic coating over such substrates as concrete blockwork and other masonry surfaces.

Safecoat provides protection to concrete floors preventing attack by a wide range of chemicals. It will prevent entry of oil, grease and other contaminants and provide a readily maintained finish in undercover carparks, workshops, factories and warehouses. Safecoat also resists general staining and provides an economical and hygienic finish which guards against bacteria growth – ideal for processing facilities across many industries. 790 is a pigmented variant available in a range of standard and custom colours, while 785 is a clear product for use as a sealer or mortar for patching concrete.

Safecoat has been designed to be resistant to abrasion and chemicals for interior use. Safecoat is slippery when wet and requires the addition of aggregate included in the “Less Slip” system. Aggregate can be added immediately prior to application or it can be cast over the still-wet first coat. These methods increase surface safety in areas such as ramps, walkways, stair treads and doorways.

• Solvent-free epoxy coating for application on floors and walls

• Guards against bacteria growth – ideal for sterile environment

• Excellent abrasion, solvent and chemical resistance

• Available in Gloss or Less Slip finishes

• The addition of AES40 sand improves slip resistance on ramps and stairs

On floors: 790 Safecoat provides protection to concrete floors, preventing attack by a wide range of chemicals. It will prevent entry of oil, grease and other contaminants and provide a readily maintained finish in car parks, workshops, factories and warehouses. 790 Safecoat resists general staining and provides an economical and hygienic finish for the chemical, and food and beverage industries.

790 can be mixed and used as a shrink resistant filler to repair holes, left in the floor from securing equipment & racking. Simply pour directly into the hole mixed but un-thinned 790 until it is level with the surface. This will not shrink and can be coated over.

On walls: 790 Safecoat has good building and filling properties. It will fill into pinholes, minor cavities or shallow cracks, providing a hygienic coating over such substrates as concrete blockwork and other masonry surfaces.

PART A (790A) is available in 3L, 6L and 15L cans.
PART B (790B) is available in 1L, 2L and 5L sizes.
Summer and winter Part Bs are available.
Summer Part B is designed to give slightly longer pot life in warm/hot conditions.
Winter Part B is designed to cure faster in cooler conditions.
Please note: 790 epoxy should never be applied to a substrate of which the temperature is less than 6oC. Epoxy would not cure if applied to a surface that is below this temperature.
Kits (A+B) are also available:
4L kit (3A+1B), 8L kit(6A+2B), or 20L kit(15A+5B).
MIXING RATIO (A:B) IS 3:1 – product must be applied strictly as specified.

790 Safecoat is available in the Campbell Paints standard floor colours (see above). For linemarking and floor demarcation areas, please refer to Evapoxy 020. Available in bright colours, it is ideal for this application.

PLEASE NOTE: Due to their chemical properties, epoxy coatings have very poor resistance to yellowing and may “move” from its original shade in a very short period. The extent of this change depends on the colour, exposure to UV light and service conditions. This colours movement in no way affects the protection or durability of the coating. Epoxy systems should not be considered where matching existing colours in the future is a requirement.

Spread Rates: 7.5m² per litre per coat @ 125 microns; 5m² per litre per coat @ 200 microns.

Solids by Volume: 100%

A good guide of total Volume of Paint Required for 2 coats is to take the Floor Area (square metres) divided by 3.75. i.e. 600m²/3.75=160 Litre (120L Part A + 40L Part B) Add 40% (approx.) for Solvent 60Litres (30L to mix with the product for application and 30L for application equipment)

Abrasive Resistance: Excellent
Chemical Resistance: Excellent for most chemicals, alkalis and dilute acids. Not resistant to strong mineral or oxidising acids or phenols
Water Resistance: Excellent for both fresh and salt water immersion. Not suitable as a tank liner or long term submersion.
Weathering: Will chalk and yellow slightly under strong UV exposure without loss of overall performance
Adhesion: Excellent to properly prepared, clean substrates
Recoatability: Excellent with itself. Must be sanded for recoating if left for 48 hours or before maintenance recoating.

Time to Recoat: Minimum 6 hours; maximum 48 hours (longer at lower temperatures)

Time to Light Use: For walls – overnight; longer for lower temperatures or severe conditions. For floors – 24 hours before light traffic; 48 hours before vehicle wheels or chemical splash.

Time to Full Cure: 7 days. 790 may be forced cured – 8 hours @60°C is recommended. Allow full cure before immersion service or aggressive chemical splash and spillage.

Pot life is 30 minutes at 25°C.

WARNING: Pot life times are approximate for 1 litre of mixed material. Mixing more will reduce these times. Combining a 20 litre kit will reduce post life by as much as 50%.

Over the pot life viscosity will increase. Further thinning may be required during this period. The limit of pot life is reached when viscosity doubles. The material will soon gel, making it unusable. How long this takes is dependent on volume, temperature and thinning. In high temperatures gelling may occur in as little as 15 minutes after mixing A and B (20L mix, 0% thinning).

Fresh Concrete – Fully cured; 28 days.

Wall, Floor, Aged Concrete – Refer to Data sheet Surface Preparation for Floors (DSPrep) for more information on coating walls, floors and aged concrete.

Metal Surface – Mild steel surfaces should be prepared and primed in a manner consistent with its end use. For atmospheric exposure blast clean to AS1627.4 Class 2½, or use powder or hand tools to produce a bright metal surface; then apply suitable prime coat see Evic 004 Steel Primer. Non-ferrous metals are preferably prepared by chemical deoxidising and chromate conversion. Otherwise, apply Evic146E Etch & Protect Primer according to the directions in its datasheet (D146E).

Previously Painted Surface – May be applied directly over most sound, well-adhering existing paints. Surface must be clean and free from flakes, chalking or other contaminants. Existing polyurethanes and epoxy coatings should be sanded to remove gloss and provide a key for adhesion. Adhesion may diminished if applied over single pack paints or sealers.

Other Substrates – May be applied over most masonry or timber substrates if they are clean, free from surface defects and/or well primed. Refer to the Evic Group for specific recommendations.

Substrates Test – The above comments are given as a guide to aid the user in achieving the correct standard of surface preparation. It remains the responsibility of the applicator to verify the adequacy of the surface preparation and application method. If uncertain about the product’s compatibility with the condition of the surface or with existing paint, apply a test patch and check adhesion or wear characteristics.

(Refer to “surface Preparation for Floors” for full details)

MIX BY VOLUME 3 Part of “A” to 1 Part of “B” and stir thoroughly using a power stirrer for 3-5 minutes. Be certain that all material has been mixed, especially in cold conditions or no solvent is used. Transfer to a roller tray and use immediately. No induction time is needed.
Warning: One of the most common failures of high solid epoxy is that the material is poorly mixed because of it’s thick viscous nature. If this happens and the material is applied, then some areas will cure and other areas will be left tacky and will not cure because of the poor mixing. See the Mixing Tip below.

Where possible, mix the solvent into the Part A thoroughly. This helps reduce the viscosity of the Part A and makes it easier to mix in the Part B when ready.

Just before you are ready to use the product, mix the Part B into the Part A solvent mixture. Thoroughly mix with a power mixer or flat blade (never round) and make sure the entire volume is well mixed.

If the product is not totally mixed it’s possible to have areas after application which will not properly cure.

Proper mixing is important.

790 should be thinned 20-25% with 120S solvent. This increases pot life and improves substrate penetration and ease of application. If solvent vapours are not permitted or they present a contamination or fire hazard, 790 may be applied (by brush or roller) without thinning. General practice is to thin the first coat 25%, second coat 20%.

Brush or Roller: Usually applied by roller (or brush for cutting-in and small areas).
Apply by appropriate-sized roller, evenly to achieve coverage. For large floors, use 600mm rollers for maximum application rates. Using a long nap roller sleeve on floors will result in a mild stipple pattern which can marginally reduce slip.

790 is a thick/mastic industrial coating and only premium / heavy duty roller sleeves and frames should be used.

Spraying generally requires heavy duty airless equipment and operator experience with high viscosity, short pot life coatings. If spraying application is required, please refer to Evic’s 020 Evapoxy finishes.

Normally applied direct to substrate. For very absorbent surfaces, a prime coat of 790 thinned 25-30% with 120S solvent. If applying over rough surface (e.g. scrabbled or badly finished floors), apply a skim coat of 785 Safecoat Patch and Screed mixed appropriately with sand to provide a smooth surface.

IMPORTANT: 790 should only be applied if the substrate and air temperature are above 6°C. Cooler conditions can stop the curing process completely. Sudden changes in atmospheric conditions during the curing process can also affect the finish (not unlike blooming in enamels). Applying late in the afternoon or prior to wet or stormy conditions are also not recommended.

Note: Concrete floors can often be below 6°C in the winter.

Spraying equipment and/or mixing utensils should be thoroughly flushed clean before the coating cures using 120S solvent.

The slip resistance required for areas such as ramps and walkways, requires the addition of sand aggregate (product code:AES40). Sand aggregate can be mixed with the 790 immediately prior to application. Alternatively the sand can be cast over the still-wet first coat, sweeping excess away once cured. A second coat of 790 can then be applied to trap the sand between coats.

Additives such as aggregate in floor coatings will not produce a slip resistant surface that can always be considered safe for pedestrians on ramps, stair treads and other walkways that are likely to get wet.

It is recommended for that other aids such as non-slip matting, adhesive ribbing and strips are employed to ensure pedestrian safety when these surface are wet.

Acid etching is usually the most economical way to prepare a concrete surface, especially for smaller areas. It is commonly used because it is effective, the materials are readily available and inexpensive and little skill is required. Many other methods are equally or more effective. Most of these do require specialised equipment and are more typically used by professional applicator or cleaners than by in-house maintenance crews or private uses. Which method is best will depend on the above factors but also on the specific requirements of the job. In certain cases, acid may present a specific problem (disposal, corrosion) while at other times dust generation may make dry mechanical means unacceptable.

Hydrochloric (also called commercial muriatic, as used in swimming pools) acid is normally preferred for acid etching because it is readily available, safer to use and the salts produced are readily washed away with fresh water.

Prepare a mixture of 1 part Commerial Muriatic (Hydrochloric) Acid and 5 parts water (concentration can be varied to suit conditions). Always add the acid to the water, not vice versa. Avoid breathing fumes.

In some instances a stronger acid may be required, or hydrochloric acid may not be available. Both phosphoric acid and sulphuric acid may be used at varying concentrations, especially to shift stubborn surface films. If these are used, ensure extra care is taken to wash the floor after etching. Where disposal is to be through a municipal drainage system, residual acid should be neutralised using sodium bicarbonate or other suitable alkali material. Sulphuric acid will leave a white salt (calcium sulphate) in the surface that may leave a light colour unless severe scrubbing is carried out. Also take extra care in mixing-add the acid to the water slowly, with gentle stirring. The solution will become warm to hot. Wear protective goggles and gloves and beware of splash – if on skin or eyes wash immediately with copious quantities of water and seek medical advice if irritation or pain persists.

In certain cases there may be corrosion hazard as the hydrochloric acid can penetrate to the reinforcing steel e.g. through shrinking or stress cracks. In such cases etch with phosphoric acid or preferably use alternative methods to prepare the concrete.

IMPORTANT: Pre-wet floor with clean water then spread the acid solution evenly over the concrete floor using a plastic watering can fitted with a rose spout. Take care to cover all areas thus ensuring all the concrete is wet with ample fresh acid. Scrub thoroughly into the surface using a nylon or natural bristle broom. The acid should immediately begin to effervesce and continue to do so for 3 to 5 minutes, gradually diminishing. The acid solution may turn a yellow colour. If in places effervescing does not begin immediately, or is lacking in vigour it could mean:
a) that the acid is spent – apply fresh acid; or
b) the surface has residual film over it, such as PVA curing compound – try increasing the concentration of the acid solution, or
c) the concrete is still contaminated by oil or grease, etc. – carry out degreasing or cleaning as appropriate or lastly;
d) the surface is coated with an acid resistant film such as chlorinated rubber curing compound – prepare floor by wet or dry mechanical means.

When reaction has stopped, wash down with amply fresh water and brush thoroughly to dislodge loosely held aggregate and sand and to dissolve salts. Allow floor to dry out, providing fresh air ventilation or heating where appropriate. When dry, try not to sweep but vacuum clean thoroughly to remove all loose sand, dust and other particles. Acid etching creates holes in the concrete surface. The coating penetrate into these holes which increases its bond (adhesion) to the floor. Sweeping pushes dust back into the holes which is not desired.

Begin coating as soon as possible to avoid further contamination.

When acid etching vertical surfaces such as columns, bund walls, tanks, etc., begin applying acid solution at the bottom and work upward in bands about 200 to 400mm wide. This ensures that concrete is wetted with fresh acid, not spent solution running down from higher up. Use a plastic watering can fitted with a rose spout and sprinkle liberally over the wall and work in with brushes.

Check carefully that reaction is occurring everywhere; lack of effervescence may indicate presence of undesirable form to tilt release agent. It is recommended that the etching is repeated at least once more to ensure that surface is adequately roughened overall. For conditions of permanent immersion abrasive blast cleaning is strongly preferred to acid etching.
Other Preparation Methods

Recent trends in the construction industry have seen the widespread use of curing compounds. These materials interfere with adhesion of the Safecoat products and cannot be removed by acid etching, The same applies to certain (not all) tilt release agents used in tilt-built constructions. Use of such materials should therefore be avoided if the floor or wall is to be coated and if acid etching is the desired method of preparation. Otherwise mechanical shot-blasting or high pressure water blasting may be necessary.
Specific Comments

TYRE STAINING: Most flooring products are prone to staining from tyres, especially when they are hot after prolonged use. When staining is considered undesirable, arrange for the wheels to be parked on protective mats.

COOL ROOMS: Although Safecoat products do not contain any solvent; before they are fully cured they do have a slight odour which may taint foodstuffs and beverage container. When applied in cool room, the cure will be retarded unless the surface is allowed to reach normal temperature before application and during the full curing period. Note that it may take up to a few days after turning off a cool room for it to reach normal temperatures without additional heat input. All food, etc., should be locked in airtight containers or removed from the area to prevent contamination.

Refer to M790 for full details.

Up to 24 months if stored in a properly sales container.

This is a specialised industrial coating and should only be applied by experienced and competent tradesmen and in accordance with the manufacturers specification. Please read material Safety Data Sheet M790.