Inverted Roof Membrane Assembly Detail

Protects roof layers from uv and mechanical damage inverted roofs are typically assembeled as vegetative ballasted or plaza roofs.

Inverted roof membrane assembly detail. Inverted roof systems are also referred to as upside down roof assembly. More generically others may categorize an irma or pmr system as built up roof system or bur. Inverted roofs are designed with the waterproofing layer usually a liquid applied membrane beneath the insulation. Inverted roof membrane assembly.

In an irma the system s insulation is installed above the waterproofing membrane instead of below as in a conventional roof assembly. Liveroof maxx green roof modules over inverted roof pmr assembly detail author. Some references may use the term protected membrane roof or pmr system. 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.

Liveroof green roof module detail architectural drawings cut sheet system properties intensive conventional roof tpo epdm membrane slip sheet created date. Irma can be referred to as an insulated roof membrane assembly. An inverted roof also referred to as a protected membrane or upside down roof is form of flat roof in which the waterproofing layer is beneath the thermal insulation rather than above it. Explore each roof assembly in greater detail below or dig into the downloadable materials to learn more.

The membrane is further protected by ballast overtop the insulation. Inverted roof membrane assembly irma systems are used in applications where the membrane requires protection from site specific hazards. An irma system is the most common type of roof used on modern high rises today. Best of the dow chemical co.

Liveroof global llc keywords. 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 assembly has produced a variety of terms such as an upside down roof or inverted roof system and in 1968 a patent was issued on the insulated roof membrane assembly irma developed by j s. Inverted roof membrance assembly irma systems are used in applications where the membrane requires protection from site specific hazards.

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.