K Rend K Mix GP Mortar Grey 25kg - 21505

It can also be used as a scratch coat plaster for internal and external work, as a bedding for pavia and as a rubbed up finish suitable for external painting. It can be hand or machine applied On site, add clean water and mix for 5 minutes Workable and easy to use 25kg bags for convenient on site handling Reduced wastage over bulk materials Application: Add 4 – 5 Litres of clean water per 25kg bag Mix thoroughly for at least 5 minutes in a standard site mixer to break down additives Specification: Hand application coverage: 1.8kg / mm thick / m² | approx. 55 m² per tonne Hand application require: 14-18kg / m² | approx. 8-10mm thickness Machine application coverage: 1.5kg / mm thick / m² | approx. 66 m² per tonne for 10mm thickness Machine application require: 12-15kg / m² | approx. 8-10mm thickness Compressive strength class: CS III Workable life: 4 hrs 28 mins Capillary water absorption: W2 Adhesion: 0.28 N / mm² (FP - a) Water vapour permeability (μ): ≤ 15 Dry bulk density: 1400kg / m³ Thermal conductivity: P = 50% - 0.43 W / mK (tab value) Air content: 29% Reaction to fire: Class A1 Durability (against freeze thaw): based on provisions valid in UK and Ireland