Upside Down Roof System

In an inverted membrane system the coventional membrane arrangement is invereted or turned upside down.

Upside down roof 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. Inverted roof membrance assembly irma systems are used in applications where the membrane requires protection from site specific hazards. Inverted membrane roof systems. Illustrations courtesy of american hydrotech inc.

The system is also referred to as a protected membrane or upside down roof. Benefits of inverted roofs the great benefit of inverted roofs is that the insulation protects the membrane from extremes of weather such as frost uv exposure and the expansion and contraction that comes about from summer winter temperature cycles which can be as much as 80 c on some roofs. Also known as a protected membrane or upside down roof inverted roofs employ insulation which can resist water absorption provide excellent thermal performance be unaffected by freeze and thaw cycles withstand surface traffic and be protected from uv and mechanical damage among others. Inverted roof systems in this type of construction the principal thermal insulation material is applied on top of the weatherproof covering so that the complete roof construction including roof covering is kept at warm temperatures during the winter months and at moderate temperatures during the summer months.

Inverted roof membrane assembly irma systems are used in applications where the membrane requires protection from site specific hazards.