Cold Flat Roof Design Detail

Warm cold and inverted.

Cold flat roof design detail. Hopefully this video will help explain the difference between cold flat roof construction and warm flat roof construction this videos show detailed drawings. A cold roof system sees the insulation placed immediately above the ceiling between the joists with ventilation space above the insulation. Cold roof designing buildings wiki share your construction industry knowledge. In the case of cold roofs the residential flat roofs have the waterproof placed directly on the deck and any insulation would be placed above the ceiling.

Compact unvented roof assembly r value increased to r 50 in very cold climate zones to control ice damming. Flat roof design guide. The building regulations in the uk provide guidance on roof design. On a flat roof this could be air in at.

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. When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof. Details both in 2d and 3d to give a clear understanding. Installing a warm roof can be extremely straight forward and simple to do.

A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. This arrangement allows the deck to become cold. In very cold climate zones this minimum r value should be increased to r 50. Basically there are two options to choose from when insulating a flat roof.

In a cold weather such roofs are inherently prone to condensation which can cause material decay and deterioration. There are design differences for each type. Optimum roof assembly design to enclose pool. Flat roof details and information relating to insulating a flat roof.

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. Flat roof types. There are three recognised designs of flat roof construction. A flat roof must be strong durable and stable throughout its lifetime.

In cold climate zones the minimum total r value for the entire unvented roof assembly should be r 40.