Store under cover, in unopened bags clear of the ground in cool dry conditions,protected from frost and excessive draught.

A 22 kg sack mixed with 5 litres of water will produce approximately 13.5 litres of mortar. A litre of mortar will cover 1m² at a thickness of 1mm.

Do not place when the substrate temperature is below 5°C or when the ambient temperature is 10°C and falling.
Do not exceed the maximum recommended water content and only use clean potable water.
This product is not recommended for external use.

SUBSTRATE PREPARATION

It is not usually necessary to prime absorbent surfaces. However, to ensure satisfactory bonding, the prepared surface should be dampened down to minimise suction. Ensure that the surface is in a saturated surface dry condition prior to application of Cempatch Rapid Repair Mortar, i.e. no visible surface water.

PRIMING

Absorbent surfaces should be dampened with clean water. Very absorbent surfaces must be primed with dilute Neoprene Primer. Non absorbent surfaces must be primed with neat Neoprene Primer.

MIXING

Cempatch Rapid Repair Mortar should be mixed in the proportions of 22 kg of powder to 4.6 – 5.5 litres of water or between 3:1 to 4:1 by volume. Add Cempatch Rapid Repair Mortar powder to the required amount of water in a clean container and mix until a homogenous, smooth, slump-free consistency is obtained. Only mix enough mortar that can be applied before the product begins to set (approx. 10 – 15 minutes). Cempatch Rapid Repair Mortar can be applied up to a thickness of 20mm. For increased economy the mortar can be bulked out by adding up to an equal volume of graded aggregate. Small localised repairs over 20mm, but not exceeding 50mm, should be bulked out with an equal weight of graded aggregate. Mixing is best achieved using a drill fitted with a power whisk. The working time will be extended at low temperatures and reduced at higher temperatures.

APPLICATION

For best results over large areas apply the mortar with a steel trowel at a thickness of 2 – 3 mm. To produce a smooth repair surface ready to receive floor coverings, finish with a wet smoothing trowel before the mortar has fully set, i.e. 15 - 20 minutes. To ensure a level surface when filling holes and cracks, trowel the mortar in to the area and apply pressure to ensure the mortar covers the repair surface. Fill the repair leaving the mortar proud of the surrounding area, then float or grind to the required level after approx. 20 minutes. Overcoating can commence after approximately 1½ hours at 20°C @ 2mm.