EverFlor - Tack Coat

EverFlor Tack Coat is a two-component epoxy resin adhesive primer. It is applied to prepared concrete immediately before screeding or patching with the Cretebond range. The resin and curing agent are supplied in matched quantities and mixed at 1.76:1 by weight before use.

The product is 100% solids, so nothing evaporates out of the film. What you apply to the floor is what stays on the floor: a 220 micron wet coat cures to a 220 micron dry film. On porous and absorbent concrete the resin soaks into the open surface, binds the loose upper layer and leaves a sound, grey, resinous base for the screed to bond to. VOC content is below 30 g/l.

Use it under Cretebond repair and screeding mortars. It earns its place most clearly on shallow or intricate repairs, where there is not enough depth or mechanical key for the mortar to hold on its own. Floors must be prepared correctly first — adhesion of the whole repair depends on it.

Recommended areas of use

• Internal and external concrete floors
• Porous concrete floors requiring a bonding coat
• Absorbent concrete substrates needing stabilisation before coating
• Prior to screeding or patching with the Cretebond range
• Shallow or intricate repairs with limited mechanical key
• Over existing paint, provided poorly bonded paint is removed and sound paint is roughened

Features

• Two-component epoxy adhesive primer: creates a strong bond for the Cretebond range
• 100% solids, so the full applied thickness remains as cured film
• Penetrates and stabilises absorbent concrete before the mortar goes down
• One coat covers 3-4m² per kg, brush or roller applied
• Supplied ready to use — no thinner or solvent required
• Up to 45 minutes pot life at 20°C for mixing and laying off
• Takes foot traffic 8 hours after application at 20°C
• Interior and exterior use; 24 month shelf life in unopened containers

Good to know

Prepare the floor properly: it must be clean, sound and free of loose material, laitance and contamination. Apply between 10°C and 25°C. Mix the full unit — part-mixing changes the ratio and the film will not cure correctly. Overlay with Cretebond after 8 hours at 20°C and within the 48 hour maximum overcoat window; beyond that the primer should be reapplied. Cleaning applicators is not practical — discard brushes and rollers after use.

SURFACE PREPARATION

The floor must be clean, sound and free of all loose material, dust and contamination. Remove laitance and anything that will not hold the weight of a repair. You can apply over existing paint, but strip out all poorly bonded paint first and roughen well bonded paint to give a key. Correct preparation is the single biggest factor in adhesion.

MIXING

Mix the resin and curing agent at 1.76:1 by weight. Mix the full unit and stir thoroughly until the colour is uniform. Do not mix part packs — a wrong ratio will not cure properly. Pot life is up to 45 minutes at 20°C, so mix only what you can lay in that time.

APPLICATION

Apply one coat by brush, working the primer into the surface. On large flat areas use a roller. The product is supplied ready to use; do not thin it. Target a 220 micron wet film and expect 3-4m² per kg. Apply between 10°C and 25°C; do not work below 10°C.

OVERCOATING AND CLEAN-UP

Touch dry is 6 hours at 20°C and the floor takes foot traffic after 8 hours. Overlay with the Cretebond range from 8 hours at 20°C and within the 48 hour maximum overcoat window. If the window is exceeded, prepare and prime again. Discard brushes and rollers after use — they cannot practically be cleaned. Store unopened containers for up to 24 months.