Poured floor coverings
Poured finishes such as micro-cement, polished cement, resin and terrazzo work well with underfloor heating as they are all good conductors of heat.
These guidelines have been created to help you confidently install poured floor coverings over your Wunda Rapid Response® boards as part of a complete Wundafloor® system.
When installed correctly, your Wundafloor provides a stable, efficient, and highly responsive heated floor designed to work seamlessly with poured floor finishes.
Installation Method for poured floor coverings
A poured floor finish requires a smooth, level and firm surface to be installed upon, in order to ensure this it is necessary to use an approved self levelling compound or renovation screed. Perimeter strip is necessary to be fitted around the room to allow expansion.
It is important to carry out a pressure test of the floor heating system and pipes prior to applying any primers and levelling compounds.
Before pouring any levelling compounds, ensure that all Rapid Response® boards are securely bonded to the subfloor and that there is no movement in the boards. It is important that any movement in the boards or joints between boards is addressed and remedied before levelling compounds are poured. Additional Secure fixing of the boards may be required using large washers and screws, if movement is detected.
The aluminium of all unused pipe channel’s must be cut to expose the empty channel, ready for filling with your chosen levelling compound.
It is crucial to always prime the boards first with the approved and relevant primer, before laying the approved self levelling compound.
The Wunda approved levelling compounds and primers are:
- ‘10mm Ultra ProLevel Ultimate’, when primed first using ‘Ultra Prime it multi surface primer’.
- ‘10mm Mapei Ultraplan Renovation Screed’ when primed first with ‘Mapei Eco Prim Grip’.
The levelling compounds and primers are not provided by Wunda. They can be sourced from local merchants or online and the relevant ratios will be included on their instructions.
Tile adhesive and self levelling compound curing time
Tile adhesives and levelling compounds/screeds and poured floor finishes must be allowed to cure naturally. Be sure to check the manufacturer’s specific requirements. Do not use the underfloor heating system to accelerate the curing process.
When activating the heating, increase the temperature gradually. If you have a mixing valve begin with the it set to the minimum position and increase slowly by up to 5°C each day until the desired operating temperature is reached. If you are coming from a low temperature heat source, ensure the flow temperature supplied is low to start and slowly increased by up to 5°C each day until the desired operating temperature is reached.
Download Wunda Rapid Response® floor coverings information