To minimise unwanted heat loss and allow for expansion, it is important to ensure that the floor screed does not form a bridge to either external or internal walls. Therefore, edge insulation must be laid against all walls.
The adhesive strip makes the installation quicker and easier on the wall. The plastic flap lays under the pipe and fixed to the insulation boards. The purpose of it is to stop the liquid screed getting under the insulation boards.
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