The Brew Cabin

Posted: **Fri Oct 09, 2009 9:51 am**

Hi

Can anyone advise what makes up a Capping Layer please. I am installing a soak away with 12 polystorm crates and the main web site refers to adding a capping layer before the sub base, as it will be in the middle of the drive. I assume a capping layer is more than just crushed concrete, perhaps some cement added to it?

Thanks for your help
Simon

Posted: **Sat Oct 10, 2009 8:24 am**

Capping layer of aggregate can be cement bound, or unbound. about 100/150 should do it. It will protect the crates and give you a sound layer to start your layering of subase etc.

The Brew Cabin

Capping layer for soakaway