Groundworks in Canterbury, Kent

Before a ground-floor extension, the site needs to be stripped of topsoil, the foundation trench excavated to the required depth (determined by soil conditions and structural engineer's specification), and concrete strip or pad foundations poured. We also run any drainage, gas and electrical service trenches at this stage before the slab or oversite is laid.

The foundation type depends on soil conditions, the load bearing requirement and the depth to suitable bearing strata. Common options include traditional strip foundations, trench fill concrete, pad foundations and in challenging ground conditions, mini-pile systems. We work with structural engineers to specify the correct solution for every project.

Yes. We design and install foul drainage, surface water drainage and soakaway systems for new builds, extensions and drainage replacement projects. All drainage installations are carried out in compliance with Building Regulations Part H and signed off by building control.

Yes. We carry out full site clearance — removing existing structures, vegetation, trees (with the appropriate consents), concrete, rubble and contaminated material. All waste is removed from site and disposed of legally with appropriate waste transfer documentation provided.

Yes. Retaining walls are a common requirement on sloped sites in Kent. The design depends on the retained height, soil pressure and surcharge loading. We specify and build from engineering brick, block, concrete or natural stone, with correct drainage behind the wall to prevent hydrostatic pressure build-up.

Kent has a mix of chalk, clay and alluvial soils depending on location. In shrinkable clay areas, building control typically requires foundations at a minimum depth of 1.0m, and often 1.5–2.0m to get below the seasonal moisture movement zone. We carry out trial pits and work to structural engineer specifications to ensure foundations are correct for your specific site.