Inverted Roof System Definition

Sbs mb roofing systems can also be used in a protected membrane roof pmr sometimes referred to as an inverted roof membrane assembly irma configuration.

Inverted roof system definition.

Inverted roof systems are also referred to as upside down roof assembly. The stunning solution is eaglewing a stretchable linear plan that turns standard roof trusses upside down to form the houses wings the inverted roof framing leaves attic space for insulation and ducting permits an inexpensive reflective flat roof and puts volume in the living space where occupants can enjoy it. The membrane is further protected by ballast overtop the insulation. Inverted roofs have their waterproofing layer beneath the insulation instead of above it as in other forms of roofing.

Invented by dow in the late 1960 s an inverted roof system uses dupont styrofoam brand xps insulation to protect the membrane helping improve the performance and. An inverted roof also known sometimes as a protected membrane or pmr roof uses the same materials as a conventional roof but places insulation on the top of the membrane. In an inverted membrane system the coventional membrane arrangement is invereted or turned upside down. Inverted roof membrance assembly irma systems are used in applications where the membrane requires protection from site specific hazards.

Inverted roof designing buildings wiki share your construction industry knowledge. The average life of a roof system in north america is around 16 years and the depreciation period for a commercial roof 39 years. These systems are typically applied in conditions where there is extensive roof traffic or to protect from excessive weather conditions such as. In this issue the investigations team explains how inverted roofs work outlines their benefits warns of a possible cause of problems and describes an unusual investigation.

In an irma the system s insulation is installed above the waterproofing membrane instead of below as in a conventional roof assembly. However deferring a roof replacement by 10 years can save hundreds of thousands of dollars. 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.