Protected Membrane Roof Assembly

Using standard ballast stone the water in the blue roof is stored within the void spaces of the stone and to the required level above the ballast.

Protected membrane roof assembly.

It is the simplest blue roof that can be created. Protected roof membrane assembly prma popular in green roofing systems the protected roof membrane assembly prma places the insulation layer above the waterproofing membrane an inversion of traditional roofing systems. In a conventional roof assembly the roof membrane is on top of the insulation where it is subject to many. Carried vertically up a wall or parapet membrane flashing must extend up the vertical plane and above the finished roof waterproofing surface at least 200 mm 8 and must extend onto the roof field at least 100 mm 4 greater if required by the membrane manufacturer.

Protected and modified protected roof systems 1 general. The natural water resistance of foamular eps and xps minimizes water absorption preserving r value. A blue roof can be created on a typical hydrotech pmr protected membrane roof assembly utilizing standard loose stone for ballast. This is done as the membrane is being installed so that a good bond is attained between them.

3 cap membrane field. Pmr assembly blue roof. With such roofs the membrane s temperature range and rate of temperature change are drastically reduced. The insulation is protected from environmental extremes but is exposed to moisture.