Thickness:
Bonded: 25mm+
Unbonded Domestic: 40mm+
Unbonded Commercial: 45mm+
Floating Domestic: 40mm+
Floating Commercial: 50mm+
Underfloor Heating Pipe clearance: 25mm+
Shrinkage
Between 300 and 500μm/m
Working time at 20°C
approx. 2 hours
Walkability at 20°C
approx. 24 to 48 hours
Strength: CT-C20-F4 to CT-C30-F6
Surface Finish: SR1 in accordance to BS 8204
Fire rating: Class A1
Commission Underfloor Heating:
After 14 days
BRE Screed Test:
After 14 days
Moisture Testing:
The Speedy Moisture Tester (Carbide Method) must be used to test moisture. Please consult ARDEX Technical Services for further advice.
Typical Mixing Model:
Cement: 350kg
Filler (Limestone): 250kg
Sand/aggregate: 1300kg (<8mm)
Water: 300 Litres
FlowPlus Admixture: 10kg
British Standard Codes of Practice
BS 8204: Part 1. In situ Floorings – Bases and Screeds.
BS 5385: Part 3. Appendix C. Ceramic Floor Tiling and Mosaics.
BS 8000: Part 9. Code of Practice for cement/sand floor screeds and concrete floor toppings (Workmanship on building sites).