Epoxy Sealer / Primer and Undercoat

abe.®cote 386 is a two-component, filled, solvent-borne polyamide-cured epoxy.

Primer/sealer for porous surfaces such as concrete, plaster, fibre, cement and timber. Undercoat for epoxy or polyurethane finishes in multi-coat systems on metals.

Advantages
  • Versatile, filled epoxy primer for
  • Epoxy sealer coat.
  • Easily applied by brush, short-fibre roller or airless spray.
  • Long pot life.
Surface Preparation

Any surface must be clean, mechanically sound and dry. For porous surfaces, electronic moisture content tests must be conducted prior to application of the priming system. Maximum moisture 4-5% max. (e.g. Protimeter Survey Master or equivalent) or Dynamic Calcium Chloride moisture “weight gain” over 24 hours or a practical overnight “plastic sheet test” is also advisable approx. 1m² masked down on surface).

Concrete must be free of laitance, curing membrane and release agents. If blow-holes, and other blemishes, are present, they must be opened up, preferably by abrasive blasting or grinding.

Plaster should be one coat cement plaster, wood float finished and free of trowelling blemishes. The plaster should not be steel float polished. Putty plaster should not be coated. Fibre cement should be free of all dust and fibre upstands. Timber should be clean and smooth. Wax-free glass fibre laminate should be abraded of surface resin to expose the fibres. All debris of preparation must be removed before coating commences.

Properties of Wet Material
Mixing ratio 3 base to 1 activator by volume
Density (typical) 1,42 g/cm3
Colour :
Base
Activator
Mixed
white
clear
white
Finish Matt
Flash point 17º C
Dilution abe.®cote thinners no.3 if required
Consistency low viscosity liquid
Properties During Application
Pot life @ 25º C 8 hours / 5 l
Induction period Allow to stand for 20 minutes in shade after mixing
Volume solids (typical) 48,5%
Recommended av. dft per coat 37 µm
Theoretical coverage for above dft 13 m2 / l on smooth surface (less on textured surfaces)
Wet film thickness at above 75 µm
Maximum recommended wft 100 µm
Practical coverage for estimating purposes 7 – 10 m2 / l (less on porous surfaces)
Drying time @ 25º C Touch dry: 1 to 2 hours
Hard dry: 12 hours
Full cure: 7 days
Overcoating time @ 25º C minimum 8 hours
maximum 48 hours
Application temperature range 10º C to 40º C
Do NOT apply If humidity in excess of 85%
Do NOT apply If surface is less than 2º C above dew point
Fire resistance of wet film Flammable
Colour White (for clear see abe.®cote 436)
Bonding / Priming

On porous surfaces abe.®cote 386 is self-priming. On steel surfaces abe.®cote 386 should be applied over abe.®cote 384.

Mixing

Stir contents of each container, particularly the base, very well. Add the activator to the base and stir together for at least five minutes using a flat paddle. It has been found that mechanical mixing gives better dispersion than manual mixing. A suitable mixing method would be a slow speed electric drill (approximately 200 r/min) fitted with a paddle. If only part of a kit is to be used, add one volume of activator to three volumes of base. Measuring must be accurate and separate stirrers used for proportioning each component. The mixed material must be left to stand in a cool place for 20 minutes prior to application.

Coverage

7 – 10 m2/litre on porous surface, 13 m2/litre on smooth surface.

Application

abe.®cote 386 should normally be used as a single coat. Circumstances could arise where two coats might be called for, in which case overcoating times must be observed.

abe.®cote 386 may be applied by brush or airless spray as a first coat or by short-fibre roller if being used as an undercoat. Where airless sprayed, a tip of approximately 350 ?m is used. Where abe.®cote 386 is used as an undercoat for epoxy or polyurethane enamels and a finish of the highest quality is required, the dry film may be sanded down to remove surface blemishes. All debris should be washed off with abe.®cote thinners no. 3 before overcoating.

abe.®cote 386 should be stirred frequently during use. abe.®cote 386 should not be applied if the ambient temperature is below 10ºC. The curing reaction will not proceed at low temperature. If surfaces are not at least 2ºC above dew point, there is every chance that a film of condensed moisture may be present. This will interfere with the adhesion of the coating. Wet film thickness should not exceed the recommended figures as solvent entrapment could result. The same condition may be caused if overcoating times are shortened. Solvent entrapment in the film can lead to inferior performance.

Cleaning

abe® super brush cleaner before setting.

Protection on Completion

Against traffic and spillage until cured. Most epoxies chalk and degrade in extensive sunlight.

Model Specification

The primer/sealer coat will be abe.®cote 386, a two-component, filled, solvent-borne polyamide epoxy resin system, applied in accordance with a.b.e.® Construction Chemicals’ recommendations.

Packaging

abe.®cote 386 is supplied in 1L and 5L yield metal containers.

Handling & Storage

All abe.®cote 386 related products have a shelf life of 12 months if kept in a dry, cool store in the original, unopened packs. If stored at high temperatures and/or high humidity conditions, the shelf life may be reduced.

Health & Safety

Wet abe.®cote 386 is toxic and flammable. Ensure working area is well ventilated during application and drying. Avoid flames in vicinity. Avoid inhalation of dust and contact with skin and eyes. Suitable protective clothing, gloves, eye protection and respiratory protective equipment should be worn. The use of barrier creams provides additional skin protection. If contact with skin occurs, wash with water and soap. Splashes into eyes should be washed immediately with plenty of clean water and medical advice sought. Cured abe.®cote 386 is inert and harmless.

NB: When transporting by aircraft, ask for material safety data sheet.

Important Note

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicalsendeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® has no direct or continuous control over where and how a.b.e.® products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® products, whether or not in accordance with any advice, specification, recommendation, or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.