Floor Preparation

Franks Flow Screed Ltd will guide you in everything before you make decisions. Before you place your order, please take the time to read through our important preparation guide to ensure your order is completed with no complications.

HOW TO PREPARE YOUR FLOOR FOR LIQUID SCREED?

Remove any debris from the sub floor.

A membrane of 1000 gauge or thicker should be laid immediately under the pipework (above the insulation board) as a slip layer, and to prevent leakage of the screed before setting.

Install an edging strip around the edges and corners of the wall and attach securely.

Any shuttering across doorways or steps should be fully sealed with expanding foam or mastic to prevent leakage after laying but before setting. Pipe ducts or holes through walls also need to be sealed before placement of the liquid screed.

HOW TO PREPARE YOUR FLOOR FOR LIQUID SCREED WITH UNDERFLOOR HEATING?

Install underfloor heating pipes and ensure that they are clipped every 400mm and more around bends. Make sure that the system is full of water prior to the liquid screed being laid. This avoids the pipework floating to the surface of the screed.

If you are using an ‘eggbox’ type system, the membrane should be laid under the eggbox, and you should avoid using small off-cuts o eggbox to avoid any possibility of floating.

The minimum cover above underfloor heating pipes is 25mm.

HOW DO YOU INSULATE EXISTING CONCRETE FLOOR?

By installing PIR (Polyisocyanurate) insulation boards.

Underfloor Heating Liquid Screeds
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