What is an inverted roof?
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 …
Why is roof inverted?
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.
Is inverted roof a warm roof?
Inverted Roof Systems – A Variation of a Warm Roof As a result, the waterproofing membrane is better protected from the elements and other factors such as UV radiation and rapid changes in temperature.
Where are inverted roofs used?
Inverted roofs can be used for a wide range of applications, including extensive or intensive roof greening, gravel cover, or load bearing, either as a terraced roof or as a parking deck. This illustrates the range of requirements that the thermal insulation material must be able to meet.
What is inverted roof truss?
Inverted The inverted truss is used to provide a vaulted ceiling along a portion of the span. Cut-off (Bobtail, Stubend) This shape may be used where a triangular truss will not fit. Usually stubbed at jogged exterior or at change to vaulted ceiling in opposite direction.
What does a pitched roof look like?
A pitched roof is a roof that slopes downwards, typically in two parts at an angle from a central ridge, but sometimes in one part, from one edge to another. The ‘pitch’ of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness.
What is a SBS roof?
SBS modified bitumen roofing is a material made out of asphalt and synthetic rubber, making it an exceptionally flexible material for flat roofs. Thanks to its rubber composition, the material is less prone to cracking and sustaining damage from elements like ice and sun.
How do inverted trusses work?
Inverted king post trusses are made of steel bars and cables used to reduce bending, deformation, and a trusses’ height. In other words, they are a collection of continuous beams (steel or wood) and steel cables that are positioned under the beam, supported by an upright king post.
How expensive is it to change the pitch of a roof?
The costs of changing a roof pitch can depend upon numerous factors but will be anywhere from $15,000-$20,000 on average – large and complex roofs may cost more. Replacing the frame entirely – common in roof re-modelling – means switching out the ridges, walls and rafters too so it’s a major project.
What is SBS rubberized asphalt?
SBS is a thermo plastic elastomer that has an excellent abrasion resistance and aging stability when blended with bitumen, making it the perfect bitumen modifier to achieve cold flexibility and elastic properties.
Inverted roofs are designed with the waterproofing layer, usually a liquid-applied membrane, beneath the insulation. Insulation boards are loose-laid on top of the membrane and then weighted down with paving slabs or gravel ballast.
What is inverted roof membrane assembly (Irma)?
Inverted Roof Membrane Assembly (IRMA) offer superior protection of the roof membrane from foot traffic and mechanical damage. Inverted Roof systems are also referred to as ‘upside-down’ roof assembly. In an IRMA, the system’s insulation is installed above the waterproofing membrane, instead of below as in a conventional roof assembly.
What is the best insulation for an inverted roof?
Rigid extruded polystyrene insulation has minimal water absorption due to its closed cell structure. This makes it the only material suitable and approved for inverted roof applications. Inverted roof applications are becoming increasingly popular for new construction projects due to a number of benefits that we think are important to highlight:
What is a Sika-Trocal roof?
In an inverted roof construction the Sika-Trocal membrane is installed directly to the structural decking (usually concrete) and the INNObond thermal insulation is installed on top of the membrane.