Inverted Deck Roof

Inverted roofs have significantly lower maintenance costs than conventional low slope roofs thanks in large part to the insulation in the inverted assembly protecting the roof membrane from mechanical damage during and after construction as well as temperature extremes that cause stress.

Inverted deck roof. However once the roof deck and the membrane warms up the condensation will be able to evaporate. An inverted roof is quite simply where the waterproofing layer is installed over the structural deck rather than over the insulation. Problems can occur if the accumulation of condensation persists. Bre investigated a large building with an inverted roof that was suffering from persistent leaks with water dripping from the underside of the roof and on to suspended ceiling tiles.

Inverted n dek acoustical is a 3 inch deep wide rib inverted acoustical structural roof deck unit that provides a support surface for various types of roofing materials. For a case study of an inverted roof defect see inverted roof defect case study. For more information see specifying insulation for inverted roofs. Inverted roofs typically last longer than traditional ones.

When the insulation was removed from the worst affected area a large number of water filled blisters were found in the waterproof membrane figure 1.