Flat Warm Roof Build Up

Others would treat even steeper pitches as flat roofs.

Flat warm roof build up.

Flat roofs have a reputation of failing early but improvements in strength flexibility ageing and weather resistance mean that if built with care using the correct materials today s high performance felts can have a life span of up to 20 years. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. Where insulation above the roof void allows the air underneath to stay warm avoiding condensation but also allows for an air flow should one be deemed to be required through the joists. This could mean flat roofs may not raise the same red flags they used to.

The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof. The major difference between the warm flat roof and the cold flat roof has to do with the air flow between the roofing timbers known as joists that help to hold up the roof. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. A great and strong roof ensures no trouble during rain and strong winds for the residents.

They can be built up from profiled metal decks as the insulation selected would provide enough rigidity to span the open sections of such decks. In the warm flat roof construction there is insulation packed into every possible space where air can flow. A great home requires a great roof. Warm cold and inverted.

In these days of energy preservation a roof can also contribute to preventing warmth being lost from a building. Flat roof constructions are generally classed as either cold or warm. A roof is mainly considered to keep out rain and snow from a building. Warm roof build ups can be installed on most modern construction material types such as concrete timber and timber based sheets.

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. It can also prevent pest from entering. Flat roofs are hard to replace. In a warm roof the thermal insulation is immediately below the membrane finish the structural deck any voids and the ceiling are at a temperature close to that of the building s interior condensation control is achieved by using a vapour control layer vcl on the warm side of the insulation.

A good roof requires maintenance like any.