Cold roofs have the waterproof layer placed directly onto the roof deck and the insulation inside the roof just above the ceiling.
Warm flat roof layers.
Flat roofs are not supposed to be built perfectly flat as bizarre as that may sound.
The best thing you can do to ensure the finished flat roof will last as long as possible is to make sure any rainwater discharges off the roof and into the outlets or gutters without pooling on the surface.
Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs.
But now flat roofs often are constructed with fewer layers because of improved waterproofing technology.
Waterproof membrane with a protective covering this should prevent water reaching the roof structure and the room below.
Inverted roofs are a type of warm flat roof where the insulation is above the waterproofing layer.
Cold roofs and warm roofs.
In this case ventilation is required and the roof can still become wet with condensation which may cause materials to decay.
Vapour control layers vcl.
Built up roofing bur was the most common type of flat roof before modified bitumen and membrane roofing were developed.
At roofing superstore our choice of flat roof materials includes everything you need to create a long lasting weather proof flat roof that performs and looks good too.
Bur consists of many layers.
Flat roofs are hard to replace.
Flat roof components.
Components of a flat roof.
Including fibreglass roof kits torch on felt and liquid rubber products everything you need for flat roofing is in one place.
This means that the insulation should be highly resistant to water absorption for example an extruded polystyrene based product which will not be affected by water or repeated freeze thaw cycles.
A bottom layer or two of insulation board multiple intermediate layers of tar or asphalt alternated with layers of roofing felt and a top layer of gravel.