Protected Membrane Roof Assembly

It is the simplest blue roof that can be created.

Protected membrane roof assembly.

Pmr assembly blue roof. This arrangement of roofing materials roof deck waterproofing membrane moisture resistant insulation is commonly referred to today as the protected membrane roof pmr or insulated roof membrane assembly irma. 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.

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. With such roofs the membrane s temperature range and rate of temperature change are drastically reduced. The natural water resistance of foamular eps and xps minimizes water absorption preserving r value. 3 cap membrane field.

A blue roof can be created on a typical hydrotech pmr protected membrane roof assembly utilizing standard loose stone for ballast. Filter mats specified must meet the insulation membrane manufacturer s specifications. To complete the installation of the waterproofing roofing assembly the separation protection course is installed such as hydrotech s hydroflex 10 for roofing applications or hydroflex 30 for waterproofing applications. This is done as the membrane is being installed so that a good bond is attained between them.