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.

Cold flat roof design detail.

In very cold climate zones this minimum r value should be increased to r 50. In a cold weather such roofs are inherently prone to condensation which can cause material decay and deterioration. Cold roof construction requires that a suitable ventilated air space exists above the insulation layer within which the air is constantly mobile being replenished by fresh incoming air whilst the air resident within the void space is being expelled via a natural vent action at another point. 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. Basically there are two options to choose from when insulating a flat roof. It must provide adequate protection against the elements keeping the buildings structure and interior dry. Cold roof designing buildings wiki share your construction industry knowledge.

Optimum roof assembly design to enclose pool. There are design differences for each type. 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. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

A cold roof system sees the insulation placed immediately above the ceiling between the joists with ventilation space above the insulation. Flat roof types. This arrangement allows the deck to become cold. Compact unvented roof assembly r value increased to r 50 in very cold climate zones to control ice damming.

Warm cold and inverted. Installing a warm roof can be extremely straight forward and simple to do. 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. In cold climate zones the minimum total r value for the entire unvented roof assembly should be r 40.

A flat roof must be strong durable and stable throughout its lifetime. On a flat roof this could be air in at. There are three recognised designs of flat roof construction. Flat roof design guide.

Flat roof details and information relating to insulating a flat roof.