Larsen NP Keycoat – Bulk Buy

Larsen NP Keycoat extended information

Larsen NP Keycoat product information

Larsen NP Keycoat application information

DIRECTIONS FOR USE

PREPARATION

Substrates must be sound, dry, clean and free from loose material or contamination which may interfere with bond.

Concrete and sand/cement screeds must be 28 days old and any laitance or surface treatments must have been removed.

Gypsum screeds must be below 0.5% moisture content and free from surface laitance (consult Technical Department for further advice).

Timber substrates must be sound, stable, at the final in-use equilibrium moisture content, suitably fixed to be free from excess deflection and be suitable for the end use.

The ambient and substrate temperature must be above 5°C when the primer is applied and underfloor heating must have been turned off at least 48 hours before.

APPLICATION

On smooth or non-absorbent substrates – Apply one coat of primer by roller ensuring an even coat without ponding or puddles.

Do not apply in thick layers. Allow to fully dry to a clear, tacky film before applying adhesive or levelling compound. This is typically within 1-2 hours at 20°C. Avoid excessive trafficking of the substrate once the primer has dried and protect surface from dirt or traffic until subsequent materials have been applied. If primer has not been overlaid within 48hours, a second coat may be required.

On absorbent substrates – Dilute 4 parts water to 1 part Larsen NP Keycoat for use on porous substrates. Apply one coat of diluted primer by roller ensuring an even coat without ponding or puddles. Do not apply in thick layers. Allow to fully dry to a transparent film before applying subsequent coats of primer or subsequent products. On gypsum substrates, at least 2 dilute coats should be applied before applying cementitious materials.

Larsen NP Keycoat – RESTRICTIONS

All work must be carried out to current industry best practice. Good paint techniques should be applied. Do not apply to wet surfaces. In conditions of high humidity or low temperatures, drying times will be extended. Do not apply subsequent products until the primer has dried to a clear, tacky film. Thick layers and ponding must be avoided. Priming should never be used in an attempt to improve a poor or failing substrate.