Next is definitely an insulation layer, accompanied by drain board with the integral air gap. The drain board protects the waterproofing layer when relieving hydrostatic tension. Perimeter drains of four-inch Program forty PVC protected with coarse gravel or septic rock in filter fabric completes the set up. A wide-variety https://www.blackpooldampproofing.co.uk/services1/plastering
Damp proofing Options
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