How to Tell if  You Need New Coating on Your Roof

In Roofing by Rita Gibson

A flat roof consists of several layers: base (reinforced concrete slab, metal profile structure) vapor barrier (bituminous materials or rolls) thermal insulation (mineral wool or expanded polystyrene boards, expanded clay, cement screed) waterproofing (bituminous membranes, synthetic membranes or various plastics) Signs that the roof needs to be replaced can appear on any of these components, not just on membranes, so …