How to prepare for Liquid Flow Screed

We have put together the following step by step guidelines for the best practice in preparing the floor ready for our liquid flow screed:

Step 1

It is important to ensure that you have removed all dust and debris from the floor surface. This will prevent them drying in when the screed is applied, also preventing cracks or holes from forming during the drying phase.

Step 2

Ensure that you place the insulation flat, it is important to have an even surface before applying any floor screed. This also ensures that the boards placed over will be even when the boards are laid flat.

Step 3

A polythene membrane is compulsory when it comes to liquid floor screeds. This layer of polythene should be checked before laying to ensure that there are not holes or creases. Then simply overlap the joints and hold down with duct tape, this will help to prevent any leaks. Continue the polythene membrane right up to the walls, making sure that it goes tightly into the corners, securing with duct tape again.

Step 4

Skip step if you have underfloor heating

Place a 5/10mm expansion foam around the perimiter in all rooms using tape to secure it to polythene. The floor is now ready to pour our liquid floor screed. It is imperative that this preparation is carried out to the highest standards.

Step 5

For underfloor heating with clipped pipes

Please skip this step if you are using a Tray System. All pipes to be clipped securely, piercing the insulation. The clips are self-sealing, so will not leak when our liquid floor screed is poured. Water systems should be filled prior to the application of liquid floor screed to reduce the risk of the pipes floating when screed is poured.

Step 6

For underfloor heating with tray system

Please go back to Step 5 if you are using a clipped pipe system. Plumbers merchants usually supply a polystyrene-backed carboard expansion strip with the trays. It is recommended that the polythene seperating membrane is still used with this method to provide a proper tanking of the area.