Inverted roof membrane assembly irma systems are used in applications where the membrane requires protection from site specific hazards.
Inverted roof membrane system.
Inverted roof membrance assembly irma systems are used in applications where the membrane requires protection from site specific hazards.
Whilst the inverted roof is a robust system the insulation layer does not benefit from the protection of the waterproofing membrane.
Irma roofs protect the membrane from ultraviolet degradation and constant temperature changes.
Inverted roof membrane assembly irma can be constructed with virtually any type of roof membrane including bur modified bitumen and single ply systems.
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.
Benefits of inverted roofs.
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.
In an irma the system s insulation is installed above the waterproofing membrane instead of below as in a conventional roof assembly.
It bonds completely with the roof deck so if a small area is damaged any water ingress is confined purely to that area it cannot track underneath the waterproofing layer.
It is therefore essential the insulation layer is rot proof and durable.
The mariseal system inverted flat roof waterproofing method offers a simple build up waterproofing that features a protected waterproofing membrane and loose laying insulation boards.
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.
The system is also referred to as a protected membrane or upside down roof.
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 longevity of the entire roof system.
Good insulation qualities and low thermal conductivity are required to ensure the low u value of the roof.
The membrane is further protected by ballast overtop the insulation.
Inverted roof systems are also referred to as upside down roof assembly.
Insulation boards are loose laid on top of the membrane and then weighted down with paving slabs or gravel ballast.
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.
What is an inverted roof.
