Hybrid Flat Roof Detail

In the case of a flat roof insulation is usually in the form of either a rigid board above the deck or a fibrous quilt immediately above the ceiling depending on the type of roof construction.

Hybrid flat roof detail.

Hcontrol hybrid hybris boost r hybrid or boost r hybrid roof can be installed but please note in accordance with bs 5250 it is crucial to introduce 50mm cross ventilation together with a vcl. Warm cold and inverted. 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. These roofs do allow a bit of heat to escape from your home through the roof in the winter months.

A warm flat roof is. These roofs keep your home cooler during the hot summer months. However this is a general guide and could change depending upon the building use location and humidity class. Xtratherm manufactures an extensive range of high performance pir flat roof insulation boards that include tapered insulation providing comprehensive technically advanced solutions for all.

This could mean flat roofs may not raise the same red flags they used to. The roof itself is therefore kept warm. The roofs can fail if the roof assembly is not properly installed or insulated or if the outside air is unable to absorb moisture faster than it is accumulated. There are three recognised designs of flat roof construction.

Warm flat roofs and cold flat roofs. The two classic types of flat roof designs are the warm flat roof and the cold flat roof. In this context the term hybrid flat roof refers to a timber flat roof construction that is insulated both between and over the joists. In addition there s a third type the warm flat roof with airflow that s essentially a hybrid version of the warm flat roof and the cold flat roof.

By majority the rule of thumb is that in a domestic house not flats approximately a third of the total thermal performance of insulation can be placed below the deck with two thirds above the deck sometimes this is called a hybrid warm roof. Hybrid roofscombining elements of both cold and warm flat roof design hybrid roofs appear to offer the best of both worlds when it comes to maximising thermal performance while limiting constructional depth. Flat roofs are hard to replace. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology.

Flat roofing solutions the xtratherm range of high performance insulation boards provides the ideal technically advanced solution for flat roof projects. We would recommend a condensation risk analysis be carried out on every hybrid flat roof construction to determine the insulation. A hybrid cold flat roof is one where at least 2 3rds of the insulation is above the roof deck or joists. But as daniel bosworth design technical manager at sig design technology explains they should be approached with caution.

However the construction may still be vulnerable to condensation for example in scotland cold flat roofs are not recommended. Ventilation is not needed in a warm roof.