Mainline Groundworks
Construction drainage

Installing soakaways on new build

New builds often need soakaways to dispose of surface water where connection to the main drain is not possible or preferred. We install soakaways to design, with the correct size and connections. A percolation test may be required to size the soakaway.

The commercial value of resolving installing soakaways on new build early is fewer delays, clearer budgeting, and reduced repeat disruption.

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When you might need this

Teams usually investigate installing soakaways on new build when early warning signs start affecting reliability, compliance, or project timelines. This is often the point where decision makers move from observation into scoped technical action.

Common warning signs

The symptoms below are the most common triggers we see before diagnosis and repair planning.

  • Surface water to dispose of
  • No or limited connection to main drain
  • Percolation test may be needed
  • Soakaway crates or rubble
  • Building control and adoption

What to expect from the work

We work from your drainage design or size the soakaway from the drained area and ground conditions. We install and connect.

Think you might have installing soakaways on new build? A professional inspection will confirm the diagnosis.

Practical steps to a reliable outcome

We excavate, install the soakaway and connect the surface water runs. We commission and provide documentation.

Cost and complexity factors

Cost and complexity usually depend on access constraints, total scope, existing condition, and whether related works need to be coordinated in the same programme window.

What the process looks like

We keep delivery structured so scope, sequencing, and sign-off remain clear.

  1. Step 1: Initial assessment

    What this step delivers: Root cause and scope are confirmed.

  2. Step 2: Method planning

    What this step delivers: Practical repair strategy is agreed.

  3. Step 3: Delivery and verification

    What this step delivers: Work is completed and validated.

We provide these services across the UK, including

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Need a soakaway for your new build? We can install to design.

Installing soakaways on new build FAQ

What are the signs of installing soakaways on new build?
Surface water to dispose of. No or limited connection to main drain. Percolation test may be needed.
How do you diagnose installing soakaways on new build?
We work from your drainage design or size the soakaway from the drained area and ground conditions. We install and connect....
How do you fix installing soakaways on new build?
We excavate, install the soakaway and connect the surface water runs. We commission and provide documentation....

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