Capillary Bunker Liner
The core of the system. A continuous layer of patented concrete that drains excess water away and holds moisture in the sand, so the bunker plays well and washes out far less. Everything else builds on this.
Capillary Flow is a patented concrete bunker system that drains water away fast and holds the right amount of moisture in the sand. It is the reason our bunkers stay playable through the seasons, and the only system we install.
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Most bunker liners do one thing: they sit under the sand and try to keep it separate from the ground. Capillary Flow does more. It is a continuous layer of specialist concrete, laid through the base and faces of the bunker, and it moves water both ways.
When it is wet, it drains the water away quickly, so the sand does not wash to the edges and the bunker is back in play within hours rather than days. When it is dry, the same material holds moisture in the sand, so the faces stay firm and shots hold rather than running to the bottom. That two-way control is the part an ordinary liner cannot manage, and it is what keeps a Capillary Flow bunker consistent in any weather.
It is also concrete, which happens to be what we have worked with all our lives. That is a large part of why we install it, and why we install it well.
If you run a course, the appeal is simple. Bunkers that drain in a downpour, hold their shape and their sand, and ask far less of your greens team week to week. No more raking sand back up the faces after every storm, no more bunkers closed for days, and a steep drop in the sand you have to buy and replace.
We install the whole system for you, from stripping the old bunker back to the finished, sanded result. Installed with the Capillary Box, the system carries a fifteen-year guarantee, and ten years without it. We have put it in across UK courses, from a full renovation of both eighteen-hole courses at Forest of Arden to ongoing bunker programmes at clubs like Roehampton.
If you fit bunkers yourself, you can buy Capillary Flow through us. We are a UK distributor for the system, which means you source the genuine product here rather than from overseas.
The difference with buying it from us is that we install it ourselves, day in and day out. So when you order the product, you are dealing with people who know how it goes in, what it needs underneath it, and where jobs go wrong. That is worth more than a price list. Where a club or contractor sources the system through us, we can supply the Capillary Flow product and the concrete together, because the two working as one is what makes the guarantee stand up. The Grove is one course supplied this way, fitted by others using material that came through us.
Three parts of the Capillary Flow range work together. These are the ones we install and supply.
The core of the system. A continuous layer of patented concrete that drains excess water away and holds moisture in the sand, so the bunker plays well and washes out far less. Everything else builds on this.

A new addition to the range, and a clever one. EdgeVantage supports the bunker edge from behind rather than just at the surface, so the edge holds its shape and does not slump or creep over the years. It works with natural turf or synthetic, and cuts the constant trimming and reshaping bunker edges usually need.

The Capillary Box keeps the sand clean. It lets the greens team flush silt, algae and debris out of the sand after flooding or over time, so the sand keeps its colour, drainage and playing quality without being dug out and replaced. It is also what takes the guarantee from ten years to fifteen.
Capillary Flow is not a local experiment. It has been installed at more than 1,500 sites across over 50 countries, and chosen for some of the most scrutinised courses in the game, including the Ryder Cup venues at Le Golf National, Marco Simone and Adare Manor.
We did not build that record. But it is the reason we were confident putting our name to the system, both as the people who install it and as a UK supplier of it.
Tell us what they do after heavy rain, and we will come and look. A straight assessment, no obligation.
GET IN TOUCHTalk to us about supply. You will be dealing with people who install it, not just sell it.
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