Irma Roof Assembly

Inverted roof membrane assembly irma inverted roof membrane assembly irma offer superior protection of the roof membrane from foot traffic and mechanical damage. Inverted roof membrance assembly irma systems are used in applications where the membrane requires protection from site specific hazards. Inverted roof systems are also referred to as upside down roof assembly.

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Placed on top of hydrotech s monolithic membrane 6125 it offers protection from the harsh roof environment.

Irma roof assembly.

In an irma the system s insulation is installed above the waterproofing membrane instead of below. These systems are typically applied in conditions where there is extensive roof traffic or to protect from excessive weather conditions such as multiple hail events. 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. University of massachusetts amherst ma.

An irma system is the most common type of roof used on modern high rises today. The insulation may be exposed to water so it should have minimal water absorption characteristics. Some references may use the term protected membrane roof or pmr system. Irma can be referred to as an insulated roof membrane assembly.

More generically others may categorize an irma or pmr system as built up roof system or bur. Protected membrane roof pmr in a protected membrane roof also known as an inverted roof membrane assembly irma the insulation is installed on top of the membrane. Russell right well prma the acronym i think these have been around probably 25 years or so is protected roofing membrane assembly. Inverted roof membrane assembly.

But the key word here is it s inverted. Extruded polystyrene xps is the most suitable type. Challenge in 2004 the board of trustees at the university of massachusetts were so concerned to have the job done right the first time that they required a 30 year warranty to waterproof the du bois library s 65 000 square foot green roof plaza. Where irma and some people remember it by inverted roofing membrane assembly or it really means insulated roof membrane assembly.