Insights
Insights
Guides on how the systems work, what the regulations require, and what to plan for before installation.
- Gas protection02
- Lining04
- SuDS03
- Attenuation04
- 13 notes
Gas protection4 min readWhy gas membranes matter: what happens when ground gas gets in
Ground gas is invisible, and most of the time it's harmless. When it isn't, the consequences are serious — which is why a gas membrane is only as good as its last sealed joint.
5 Oct 2026
Gas protection5 min readCS1 to CS6: what your site's gas characteristic situation means
Your ground investigation gives the site a characteristic situation from CS1 to CS6. Here's what each one means, how it's worked out, and what it asks of the gas protection.
5 Oct 2026
Lining4 min readGCL brands compared: NAUE, CETCO, Solmax, Geosyn and Wrekin
Bentofix, Bentomat, BentoLiner — the names on a GCL specification vary more than the products do. Here's who makes what, and what actually matters when you choose one.
5 Oct 2026
SuDS7 min readSuDS National Standards 2025: What Every Groundwork Contractor Needs to Know
June 2025 changed the rulebook for drainage on UK development sites. What the new national SuDS standards actually require, whether SuDS are now mandatory, and where Wales differs.
7 Aug 2026
Lining6 min readHot Wedge Welding vs Tape Bonding: Why Welded Pond Liners Outperform Taped Systems
When a pond, lagoon or attenuation tank leaks, it almost never fails in the middle of a sheet. It fails at a seam — so the way those seams are made decides how long the liner holds.
7 Aug 2026
Lining5 min readHDPE, LLDPE, EPDM and GCL Bentomat: A Contractor's Guide to Choosing the Right Pond Liner
Specify the wrong pond liner and you find out the expensive way — on site, mid-install, or worse, after the water goes in. HDPE, LLDPE, EPDM and GCL are not interchangeable: each is the right answer for a different site.
7 Aug 2026
Attenuation3 min readAttenuation crates: which brands do we work with?
We're system-agnostic — we install to the drainage design, whatever crate it specifies. Here's how we think about crate selection.
13 Feb 2026
Attenuation4 min readHow Builders Merchants Can Offer Better Drainage Solutions
With growing pressure on drainage, sustainability and flood risk, builders merchants can do more than supply product. How to stock, explain and support the drainage systems contractors now need.
18 Jul 2025
Attenuation5 min readFive things to get right before your attenuation tank goes in
The tank is the easy part. The programme, the ground, the connections and the buried surprises are where jobs go sideways. Here's what to line up first.
18 Jul 2025
Lining4 min readWelding vs taping liners: why welding wins every time
The joint is the weakest point of any lined system. Tape asks an adhesive to hold underground for decades; a weld fuses the membrane into one piece. There's no contest.
18 Jul 2025
SuDS4 min readSoakaway or attenuation tank — which does your site need?
Two ways to manage surface water, and the choice comes down to one question: what can your ground actually absorb?
18 Jul 2025
Attenuation4 min readWhat is an attenuation tank, and how does it actually work?
A buried box that does nothing most of the time — until it rains. Here's what an attenuation tank is, what it's made of, and why the voids matter.
18 Jul 2025
Theory into practice
On site
Geocellular attenuation tank · lined excavation 
HDPE pond lining · membrane dressed and welded 
GCL basin · bentonite liner, base and banks 
Slurry lagoon · welded liner
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