Droogbouw
Vloerverwarming in lichtgewicht plaatmaterialen zonder dekvloer
Dry construction floors are screeds built up from ready-to-use board materials. No water is involved — hence the name “dry construction”.
This method is a solution for buildings with a timber frame construction. The relatively lightweight board materials are ideal where load capacity is limited. The most common materials are gypsum fibre boards from Fermacell, Knauf Brio, and Estrich.
Alongside boards that are milled by hand, pre-milled boards are also available. These come with a hefty price tag, but provide a solution when speed is needed. Hand-milling is cheaper and has the added advantage that the heating layout can be adapted to the specific project.
The video shows a time-lapse of the entire installation process. Before work can begin, the floor must be flat enough. Sometimes the wooden parts have to be removed and new floor elements of OSB or underlayment boards laid from the joists up.
Fermacell floor elements are 25 mm thick, Knauf Brio elements 23 mm. Variants with insulation are also available, but the advice is to insulate the wooden structural floor from below for a good insulation value.
A day after the floor elements have been glued and screwed down, the screws are removed again — the milling blade designed specifically for these elements cannot withstand contact with them. Once the underfloor heating system is installed, it is filled and pressure-tested. No leaks? Then the grooves are sealed with gypsum-bound repair mortar.