Screeded Floor (Standard Sand & Cement)

This floor construction consists of 65-70mm screed on extruded polystyrene insulation over base slab on DPM, sand and compacted hardcore.

This type of floor construction gives excellent results with UFH and is more responsive than the slab floor.

There are various fixings available for this type of floor; self-adhesive clip rail, 40 or 60mm plastic staples (staple gun required) and metal push in clips (no tool required).

Normally the rails are used in conjunction with one type of the individual fixings.

Rails are placed across the room in rows (see section on clip rails, page 16) Starting 600mm in from one end of the room the rails are spaced at 1-1.5m apart along the room and finish at the opposite end 600mm from the end of the wall. Using the clip rail cut outs as your guide, lay the pipe and "tread" into the rail cut outs. Finish of by using the individual fixings to secure all the pipe turns and any other bits of pipe work that are not secured to the insulation.

If using self levelling liquid screed it is important that all joints in the insulation panels are taped including around the perimeter. Pipe fixings will also have to be doubled as this type of screed is very dense and could cause the pipe to "float" to the surface.