Polyplumb floor heating is ideal for floating floors above existing timber or solid sub-bases. It incorporates the Polyplumb floating floor panel, which is a high density polystyrene insulation sheet with pre-formed pipe grooves at 300mm centres. Each panel includes pipe bending grooves.
|Key Design and Installation Information|
|Maximum heat output||Approx 70w/m2 (see output table)|
|Recommended design flow temperatures||60ºC (see output table)|
|Maximum circuit length||80m (15mm pipe)
100m (18mm pipe)
|Maximum coverage per circuit||25·8m2 at 300mm centres (15mm pipe)
30m2 at 300mm centres (18mm pipe)
|Material Requirements (Approx)|
|Pipe||3·1m/m2 at 300mm centres|
|Floating floor panel||1 panel /1.4m2|
|Single spreader plate||3 plates/m2|
Floating floor panel
The 1200 x 1200 x 50mm floating floor panels are laid over the entire floor area to be heated, ensuring that the panel grooves are aligned. Panels can be cut to fit where necessary. A void in the insulation is often retained around the edge of rooms to allow for distribution pipes from the room to the manifold.
Heat spreader plates
Single heat spreader plates are then laid in the pre-grooved insulation. These plates ensure an even spread of heat across the floor area and clip the pipe firmly into the panel (pictured top middle).
When the floor to be heated is covered by floor panels, pipe can be installed at the pre-designed centres of 300mm only (pictured top right).
The maximum circuit length is 80 metres using 15mm pipe, or 100 metres using 18mm pipe. Pipe should be laid in the pattern shown opposite.
18mm and 22mm tongue and groove floor boards can be laid over the under floor central heating system in the normal manner.