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Damp proofing - An Overview

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Up coming is an insulation layer, followed by drain board having an integral air hole. The drain board protects the waterproofing layer when relieving hydrostatic strain. Perimeter drains of 4-inch Timetable 40 PVC protected with coarse gravel or septic rock in filter material completes the set up. When the https://www.blackpooldampproofing.co.uk/services1/plastering

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