Hybrid Flat Roof Detail

Flat roofs are hard to replace.

Hybrid flat roof detail.

However this is a general guide and could change depending upon the building use location and humidity class. 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. 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. 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.

The roof itself is therefore kept warm. 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. Traditionally flat roof constructions fall in to two camps. Flat roofing solutions the xtratherm range of high performance insulation boards provides the ideal technically advanced solution for flat roof projects.

But as daniel bosworth design technical manager at sig design technology explains they should be approached with caution. Ventilation is not needed in a warm roof. These roofs keep your home cooler during the hot summer months. Warm cold and inverted.

Xtratherm manufactures an extensive range of high performance pir flat roof insulation boards that include tapered insulation providing comprehensive technically advanced solutions for all. A hybrid cold flat roof is one where at least 2 3rds of the insulation is above the roof deck or joists. There are three recognised designs of flat roof construction. A warm flat roof is.

But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. 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. We would recommend a condensation risk analysis be carried out on every hybrid flat roof construction to determine the insulation. 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.

However the construction may still be vulnerable to condensation for example in scotland cold flat roofs are not recommended. 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. The two classic types of flat roof designs are the warm flat roof and the cold flat roof. These roofs do allow a bit of heat to escape from your home through the roof in the winter months.

Warm flat roofs and cold flat roofs. This could mean flat roofs may not raise the same red flags they used to.