Medway Driveways are expert installers of Permeable Paving but what is it exactly?
Permeable block paving allows surface water between the blocks where it is stored in a specially constructed sub-base and then either released slowly into the environment or harvested.
Effectively, your whole drive becomes a drain in its’ own right.
Sometimes there is confusion between the terms Permeable, Porous and Pervious.
A Permeable drive allows water through to the sub-base between the blocks or surface material used and not through the blocks or surface material itself.
A Porous drive allows the water through the surface material itself into the sub-base.
The term Pervious relates to soil.
Although gravel is a Permeable surface because it allows water between the stones, it does not qualify as a permeable drive unless the sub-base has been constructed in such a way to handle the incoming water correctly.
Medway Driveways will install a beautiful Permeable Drive compliant with Environment Agency requirements and offer a wide range of bricks and colours.
(Please also see our resin bound driveways)
Installation follows this specification:
Dig out area 8-10 inches.
Install 350mm sub-base type 3 (30% voids) and membranes if required.
Install 50mm of grit 2-6mm.
Lay permeable paving blocks.
Fill joints with 2-6mm grit.
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