Groundworks in Harwich.

Groundworks contractors Harwich rely on

Groundworks is the part of a build nobody sees and everything depends on. Get the footings, drainage and levels wrong in Harwich and every trade after you pays for it. We dig, pour, drain and level to the drawings — and we're the ones building on top, so it has to be right.

• Foundations

  Trial holes first, then strip or trench-fill footings dug to the engineer's depth, steel reinforcement where specified, and C25–C35 concrete poured and vibrated. Every pour inspected and signed off by building control before we build off it.

• Drainage

  Foul and surface water runs laid to correct falls on pea shingle, with rodding access, inspection chambers, gullies and a full air test. Connections to the existing system or to the public sewer with a build-over agreement where needed.

• Concrete slabs & oversites

  Compacted MOT sub-base, sand blinding, DPM, insulation and mesh, then a poured and tamped or power-floated slab for extensions, garages, workshops and outbuildings.

• Muck away & site clearance

  Grab and tipper lorries, licensed waste transfer notes for every load, and contaminated-spoil disposal handled correctly. We clear vegetation, slabs, old sheds and concrete bases before the dig starts.

• Dig-outs & levelling

  Reduced-level digs for garden rooms, patios and driveways, sloping plots terraced and retained, and everything set out and laser-levelled rather than eyeballed.

• Retaining structures

  Reinforced concrete, engineering brick, blockwork and sleeper retaining walls with proper drainage behind and weep holes through — the part most failed garden walls are missing.

• Driveways & hardstanding

  Excavation to formation, geotextile membrane, MOT Type 1 in compacted layers, edge restraints and a base ready for block paving, tarmac, resin or concrete.

• Service ducting

  Trenching and ducting for water, electric, gas and data at the correct depths with warning tape, ready for the utility companies to connect.

Digging in and around Harwich

Every plot digs differently. These are the things that change the price and the programme on groundworks around Harwich and CO12 — we check all of them at survey so the quote you get is the price you pay.

• Essex clay & shrinkable soil

  Most of the ground around Harwich is shrinkable clay, which moves as it wets and dries. That normally means deeper footings — often 1.0–1.5m rather than the 600mm people expect — and the depth is set by the engineer and building inspector, not by guesswork.

• Trees & root influence

  A mature tree near the dig can push foundations to 2m-plus, or require trench-fill with a compressible board to one face. We identify root influence at survey so it isn't a surprise mid-build.

• Existing drainage & sewers

  Building within 3m of a public sewer needs a build-over agreement with Anglian Water. We survey the runs, lift chambers and apply for it early so it never holds up a start date.

• Made ground & old bases

  Old garage bases, filled ponds and rubble backfill are common on Essex plots. If trial holes hit made ground we'll price the dig-through honestly rather than discover it once the machine's on site.

• Access & machine size

  Plenty of properties around Harwich have narrow side access. We use 0.8t micro and 1.5t mini diggers where needed and barrow or conveyor spoil out, so a tight terrace is still workable.

• Water table & soakaways

  Percolation testing before a soakaway goes in — on heavy clay a soakaway often won't work and surface water needs a different solution. We test rather than assume.

Groundworks Harwich — your questions answered