A home extension or conservatory is only as strong as its foundations and whatever your ground conditions are, we have a solution. Prestbury Design and Build dig up to a metre deep to ensure maximum strength and reinforce the base with steel and insulate it fully.
Foundations at least 450mm wide, up to 1000mm deep we always hit clay.
Packed hardcore 150mm deep
Floor insulation 70mm to 100mm thick
Steel reinforced concrete slab
Smooth screed floor
300mm cavity wall
Wall insulation 75mm