Inverted Roof Details

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.

Inverted roof details.

An inverted or protected roof is a type of flat roof construction in which the waterproofing layer is placed below the insulation. Geotextile layer non woven polyester fleece separation layer this layer prevents a reaction between the insulation and the waterproofing layer. Liquid applied polyurethane waterproof membrane. 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.

The main difference between inverted roof systems and other roof systems is in the position of the waterproofing membrane. 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. A section of an inverted roof system using radmat s quantum vacuum insulated panel. Inverted roof internal to external roof build up.

Inverted roof systems a variation of a warm roof. The upside down sequence means the deck is waterproofed first then insulated and finally finished with paving or ballast. Waterproofing layer eg singly ply membrane. Inverted roof membrane assembly irma systems are used in applications where the membrane requires protection from site specific hazards.

Inverted roof membrance assembly irma systems are used in applications where the membrane requires protection from site specific hazards. Inverted roofs typically last longer than traditional ones. Illustrations courtesy of american hydrotech inc. Irma roofs protect the membrane from ultraviolet degradation and constant temperature changes.

The roof build up comprised the following elements. 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 module is sponsored by radmat.