Epdm Warm Flat Roof Construction

A note to consider before construction.

Epdm warm flat roof construction. This option avoids the requirement to ventilate the roof. Thermal insulation which retains heat within the building rather than allowing it to escape through the roof. Epdm rubber warm roof being installed over old decking using a new vapour barrier and thermally broken fixings. Less thermally efficient than a warm roof construction cold roof construction remains the most common form of construction for existing flat roofs.

For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow. This approach uses insulation with no air gap either immediately above or below the roof deck. This is where the insulation is typically packed between the rafters. If insulation is installed below the flat roof deck this is called a cold roof.

The guttering and gutter board has been remov. Continuously changing building regulations mean that the way your epdm flat roof is insulated insulation may need to be changed and your roof turned into a warm roof rather than the typical cold roof. The 3 most common materials used for flat roof construction. A cold deck is constructed as follows.

A vapour barrier to prevent moisture. A vapour control layer must be used below the insulation. 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. The insulation material is placed immediately above the ceiling between the rafters.

A 50mm air gap must be left. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof. The benefits it provides and its cost effectiveness over a long term period have seen it become the flat roofing system of choice for many property owners. Epdm rubber roofing has firmly established itself as one of the most popular options for flat roofing of all sizes.

Above is a typical construction of a warm flat roof. Consider geography budget and use for the roof to determine the best option. It helps to avoid condensation in the roof structure by ensuring the deck is maintained at a suitable temperature. Warm deck flat roofs can be constructed on most modern construction material types such as concrete timber and timber based sheets.

Flat roof construction flat roof construction diagram warm roof. From there the flat roof system you choose will determine the materials you apply. Warm deck roof construction repair and replacement with an epdm rubber roofing membrane most new flat roof extensions are constructed using the warm roof method. A waterproof layer which resists water.