Floor Constructions: Standard Screed Floor

Insulation

In this system, insulation to prevent the downward passage of heat is placed on top of a ground bearing floor slab, block and beam, or suspended concrete floor. The insulation is covered with a lapped Vapour Barrier to protect it from chemicals in the screed. It is essential that the architect specifies the grade and thickness of the insulation to comply with building regulations and whether acoustic insulation is required to a Robust Detail, as this can affect the choice of pipe fixing systems.

Perimeter edge insulation* must be installed to prevent thermal bridging between the screed floor and the wall. Any expansion joint positions must be made clear to Evenheat prior to design.

Fixings

Plastic staples secure the cliprail system through the vapour barrier into the insulation. The cliprail secures the pipe to suit the Evenheat design. At the ends of loops, and at any other points where the pipe is 'sitting up' from the insulation, additional staples should be used to secure the pipe before screeding.

When the cliprail cannot be secured to the insulation, A98 or A142 reinforcing steel mesh* can be laid on the vapour barrier. This provides a layout grid and, using cable ties, a fixing point for the pipe.

Screed

The screed must comply with British Standard Codes of Practice and be allowed to dry out slowly and naturally.

* This item is not included as standard.

Evenheat Limited, Compton Park, Wildmere Road, Banbury, Oxfordshire OX16 3JU
Telephone: 01295 277881, fax: 01295 277556, email: