Attenuation and geo-lining specialists
We supply and install attenuation tanks, soakaways, pond and lagoon liners and gas membranes for developers and groundworkers across the UK. All seams are welded, and every job is handed over with QA documentation.
25+
Years in the ground
970m³
Largest single tank
100%
Jobs QA'd and documented
UK-wide
From the Midlands
What we install
What we install
Recent work
Recent projects
From the trade
What our clients say
Residential housing project
Absolute top service from start to finish. The team knew exactly what they were doing, worked efficiently, and got the attenuation system installed without any issues.
Louie
M&J Evans
Residential housing project
These guys know their stuff! We had a tricky gas barrier membrane install on a tight schedule, and they smashed it out with no dramas.
Lewis
Alliance Groundworks
Commercial project
Brilliant service from a cracking team. The lagoon installation was spot on, and they worked seamlessly with the rest of our lads on site to keep the project on track.
Rich
Redmill Construction
Liner calculator
Work out how much liner you need
Liner gets ordered short because people measure the base and forget the slope faces and the anchor trench. Give this three dimensions and a batter — it does the geometry properly, prices it, and puts it in your basket.
- Slope-aware
- Counts the batter face, not the vertical drop
- Anchor included
- Trench and trimming allowance on every edge
- Fleece too
- Both faces worked out and priced alongside
What are you lining?
Crate block, fully encapsulated — base, four walls and a top.
Base dimensions & depth
Sheet overlap
Waste allowance
Corners fold away membrane, and deeper tanks lose more. We allow 25% on our own tank jobs.
Layers
Add a second geotextile layer if the membrane needs protecting on both faces.
Material
Reinforced HDPE. Made in one piece to your finished size.
Liner to order
732m²
Total ex VAT
£3,872.28
£4,646.74 inc VAT
- Before waste
- 585.6m² per layer
- Geotextile
- 732m² (1 layer)
- Or as rolls
- 7 × 2.5m × 50m roll, HDPE 0.6mm
- Delivery
- + £225.00 ex VAT, once per order
Show the working
- Base 20 × 12 = 240m²
- Walls 2 × (20 + 12) × 1.5 = 96m²
- Top 20 × 12 = 240m²
- Laps 2 × (20 + 12) × 0.15m = 9.6m²
- Total = 585.6m²
- + 25% waste allowance = 732m² per layer
- Membrane: 1 × 732 = 732m²
- Geotextile: 1 × 732 = 732m²
Tell us about your project
Quote back within one working day