Flat Warm Roof Construction Uk

This option avoids the requirement to ventilate the roof.

Flat warm roof construction uk. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. For flat roof construction a fibreglass roof is a more expensive option than felt. Guidance advice on warm cold roofs www cncbuildingcontrol gov uk. The sandwich warm deck roof is the most common type of flat roof.

However a fibreglass roof will be more durable lasting up to twenty five years with regular maintenance. What is warm roof construction. Warm deck flat roofs can be constructed on most modern construction material types such as concrete timber and timber based sheets. A roof is primarily designed to keep out rain and snow including wind driven spray from a building.

Due to the insulation being over the top of the roof the timber structure beneath is warm which is why the term warm roof is formed. A vapour control layer must be used below the insulation. Steve from london flat roofing explains how warm flat roof construction works in this excellent short video. The insulation is immediately below the waterproofing layer.

Warm roof construction is a roof with insulation to keep the warmth in the building. Flat roof u value 0 18 w m2k 2 warm deck flat roof the type of insulation for this is usually of a rigid type and the thickness will vary depending on the manufacturer s specifications. What is a roof. It can also deny access to pests.

The cheapest and simplest solution is to construct a warm roof. So what is warm flat roof construction. To use epdm for a warm deck flat roof construction solid closed cell roof insulation such as kingspan or celotex should be placed on top of the roof deck rather than in between the rafters. This is placed over the.

A warm flat roof is formed by placing a layer of insulation over the top of the roof structure. Covers flat roof materials and flat roof construction of warm and cold roofs. This is where the roof insulation sits directly on top of the timber structure thus keeping it warm and then the roofing membrane is laid over the insulation a cold roof places the insulation between the rafters underneath the ply roof covering. Part 4 flat roof construction.

The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure. The vapour control layer is above the decking but below the insulation. This approach uses insulation with no air gap either immediately above or below the roof deck. On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases.

Inverted warm deck roof the insulation boards in an inverted warm deck are laid over the structural deck and the waterproof covering.