In most cases, your groundworker will use a traditional strip foundation approach. This involves digging trenches to the depth and width required by the foundation design and then filling them with poured, ready-mixed concrete.
An initial 2-3 courses of blockwork are laid, with openings for service entries or exits created by pre-cast concrete lintels. Then the ground floor structure is installed – typically a beam and block floor where pre-cast concrete beams are used to span between load-bearing walls. The gaps in between the beams are filled in with concrete blocks laid flat.
In some systems the concrete beams are replaced with insulating polystyrene elements. In both cases a damp-proof membrane is incorporated into the floor and then insulation and finally a screed layer introduced – a thin ‘slip’ membrane separates the insulation from the screed. The insulation and screed are not normally completed until after the building structure is erected and, in most cases, with our customers the screed incorporates the underfloor heating pipes.