Inverted Roofing 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 roofing details.

This makes it the only material suitable and approved for inverted roof applications. Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure. Simply defined as a type of roof construction where the waterproofing layer lies beneath the insulation instead of above it as in other forms of roofing inverted roofs ensure that the complete roof construction including roof covering is kept at warm temperatures during winter months and at moderate temperates during the summer months. The system is also referred to as a protected membrane or upside down roof.

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 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.