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Groundworks in Medway

Footings dug to the depth the ground needs, drains laid to fall and tested, slabs level. The part of the job nobody sees, and the part everything else depends on.

FoundationsTo building control
DrainsTested before cover
Ask aboutGround history

Is this the job you need?

Get the ground right first.

Kent ground varies from chalk to shrinkable clay inside a few miles. Foundations are designed for what's actually under your house, not a standard depth.

Groundworks in Medway

The ground under Medway.

Most of the Medway towns stand on chalk, with Thanet Formation sand on the north side of Gillingham, Rainham and Strood, clay-with-flints on the higher ground at Walderslade, Lordswood, Hempstead, Wigmore and Parkwood, and soft river alluvium along the Medway at Strood, Rochester Riverside and Chatham Maritime. Each needs a different foundation.

Chalk brings its own risks: the British Geological Survey rates old underground chalk workings and dissolution as significant across much of Medway, and Medway's flood risk assessment notes that solution features may need site investigation. The ground history should be checked before anyone digs, and STG Building Control inspect every trench before concrete goes in.

Including Gillingham, Chatham, Rochester, Strood, Rainham, Maidstone, Sittingbourne, Gravesend, Dartford, Ashford, Canterbury.

Before and after

Lawn to footings in a day.

Trench-fill foundations for a rear extension.Drag to compare

How the job runs

Dig, inspect, pour.

01

Set out

Profile boards and string lines from the drawings, services traced and marked before a bucket goes in.

02

Dig and inspect

Trenches dug to the agreed depth. Building control look at the open trench before any concrete; check the builder books every inspection.

03

Pour and lay

Concrete poured and levelled, drains laid to fall on a bed and tested, then inspected again before they are covered.

04

Slab and services

Hardcore, blinding, membrane, insulation and the floor slab, with pipes and ducts in the right places for later.

Questions

Asked about groundworks.

How deep do foundations need to be?+
It depends on the soil and on any trees nearby. A metre is common; on shrinkable clay near a big tree it can be much more, or piles instead. Building control agree the depth with the builder from the open trench.
What if a drain is in the way?+
Drains should be traced before digging and checked against the map from the water company. If a drain runs under the new building it gets diverted or bridged with building control agreement, and building over a public sewer also needs a build-over agreement from the water company.
Can I get just the groundworks done?+
Yes. Plenty of groundworks jobs are for other builders or for homeowners managing their own project.

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Towns covered

Groundworks across Medway and nearby Kent.

Other services

Other work local builders can quote for.