Cellular ground stabilisation
Permeable Grid Base
Permeable grid bases use cellular grids to stabilise the ground and spread loads while letting water drain straight through. They give strength and free drainage together — a SUDS-friendly foundation, especially useful on softer ground.
What you get
Strength and drainage in one layer
Cellular grids confine and stabilise the fill within them, spreading loads across the ground while leaving the build-up fully free-draining.
Free-draining
Water passes straight through the cellular structure — fully permeable and SUDS-friendly.
Load spreading
Grids confine the fill and spread loads, stabilising ground that would otherwise rut or sink.
Great on soft ground
Especially useful where the ground is weak, made-up or prone to movement.
Reduces dig depth
Effective load spreading can reduce the excavation depth a heavier build-up would need.
SUDS-friendly
Keeps the whole system permeable for genuine SUDS compliance under resin.
Stable platform
Provides a firm, consistent base for the resin surface above.
alt: Permeable Grid Base — finished project
alt: resin bound surface detail — close-up
Why choose us
Stabilise soft ground without sealing it
On soft, made-up or unstable ground, the usual answer is to dig deep and build a thick stone base. Permeable grids offer another route: cellular structures that confine the fill and spread loads across a wider area, stabilising the ground while staying completely free-draining. You get strength and permeability together — which is exactly what a SUDS-compliant resin surface needs over difficult ground.
Part of our sub-base construction service — see the full range and how it fits together.
Because the grids spread loads so effectively, they can reduce the excavation depth a heavier build-up would otherwise require — useful where digging deep is difficult or where you want to disturb the ground as little as possible.
Crucially, the whole system stays permeable: water drains straight through the cellular structure to the ground below, keeping the surface genuinely SUDS-compliant rather than permeable in name only.
We specify the grid system and fill to the loads and ground conditions, giving the resin a firm, consistent, free-draining platform to be laid on.
Why the base matters most
- The groundwork that makes a surface last — done properly
- Correct depth, compaction and a stable formation
- Permeable build-up to keep the surface SUDS-compliant
- Drainage and edge restraint designed in, not bolted on
- A fixed quote with the groundwork itemised, not hidden
A permeable grid base suits when…
- The ground is soft or unstableGrids stabilise weak or made-up ground that would otherwise move.
- You want full permeabilityThe cellular structure keeps the whole build-up free-draining.
- Deep excavation is difficultLoad spreading can reduce the dig depth needed.
- SUDS compliance is the goalA fully draining base supports genuine SUDS compliance.
- The surface will see trafficGrids spread vehicle loads to protect the ground beneath.
Work process
How we build a permeable grid base
Stabilise, drain and spread loads — a firm, permeable foundation over difficult ground.
Assess the ground
We check the ground conditions and loads to specify the grid system.
Fixed quote
You get a clear, itemised written quote.
Prepare the formation
We form and level the formation to receive the grids.
Lay & fill grids
Cellular grids are laid and filled to confine and stabilise the build-up.
Compact & level
We compact and level for a firm, consistent, draining platform.
Ready for resin
The free-draining base is handed over ready for surfacing.
Materials
Trusted, industry-recognised systems
We only specify UV-stable resin and graded aggregate from
established suppliers, because the quality of the materials decides how well the surface
drains, holds colour and lasts.
FAQs
Permeable grid base questions
What is a permeable grid base?
Cellular grids that confine and stabilise the fill within them, spreading loads across the ground while letting water drain straight through. They give strength and free drainage together.
When is a grid base the right choice?
Especially on soft, made-up or unstable ground, where you want both stability and full permeability — and where deep excavation is difficult.
Is it strong enough for vehicles?
Yes — grids spread loads effectively, protecting the ground beneath. We specify the system to the traffic the surface will carry.
Does it keep the surface SUDS-compliant?
Yes — water drains straight through the cellular structure, keeping the whole system permeable for genuine SUDS compliance.
Can it reduce how deep we dig?
Often — effective load spreading can reduce the excavation depth a heavier stone build-up would need, which helps on difficult sites.
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A strong, free-draining foundation
Book a free site survey. We’ll assess the ground and send a fixed, itemised written quote with no obligation.