Permeable Paving Sub-Bases (SUDS Aggregates)
With ever greater consideration being given to how 'run-off' water is managed, planners and builders often specify the use of a permeable sub-base (SUDS) aggregate to be used. This product allows surface water to escape through the sub-base into the ground below. Avoiding any excess surface water from running into the sewers and watercourses - which may already be unable to cope with the amount of water. It not only acting as a filtration system but allows the water to drain away in a more controlled manner, helping to avoid the flash flooding incidents we have seen an increase over the last few years!
Our 20-5mm and 2-6mm carboniferous limestone products are ideal for this type of situation.
An ideal material to use as a permeable sub-base. As the size suggests the 20-5mm OGCR is used as the base layer of any foundations. The larger stones will act as a filter, plus allowing the water to seep slowly into the ground.The 2-6mm carboniferous limestone should be used as a top permeable layer...More Details
Perfect for the top layer of a permeable sub-base. Placed on the larger 20-5mm material the 2-6mm OGCR carboniferous limestone is ideal for laying your patio blocks, slabs or paviors on. The combination of the carboniferous aggregates will allow the excess water to slowly drain into the ground and not into the already overworked sewers or watercourses...More Details