Sarnafil Cold Roof Ventilation

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Sarnafil cold roof ventilation. Sika sarnafil is the leading manufacturer of single ply roofing membranes for flat roof waterproofing. A cold roof is where all of the insulation is placed either between and under or completely under the joists or deck. Sarnafil cold roof ventilation in a cold roof construction the sarnafil membrane is installed directly to the structural decking usually timber with firrings to fall. Ventilation is not needed in a warm roof.

In this way the roof itself is kept cold. Sarnafil adhered systems sarnafil adhered roofs are best for low sloped uniquely shaped or pitched roof applications composed of non nailable substrates such as pre cast or pre stressed concrete cementitious wood fiber or gypsum. You only need ventilation in a cold roof. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358.

Installation is carried out by sarnafil trained contractors. In a cold roof construction the sarnafil membrane is installed directly to the structural decking usually timber with firrings to fall. Sarnafil type a and type t. They also work well over non nailable substrates such as concrete steel and wood decks.

The design of cold roofs usually occurs when external abutment height provision is problematic thus making a warm roof not achievable. Cold roofs are generally considered as difficult to design and construct and future upgrading of insulation requires invasive destructive means which should be kept in mind. Mainly due to the added requirement for roof void ventilation and the likelihood of cold bridging occurring. Hopefully this video will help explain the difference between cold flat roof construction and warm flat roof construction this videos show detailed drawings.

This is when a gap appears in the insulation which becomes far colder than the main areas leading to condensation issues. Since the 1960 s the performance and longevity of sika sarnafil roofs has been demonstrated in. In general the installation of a cold roof is not recommended for the construction of new properties. Sika s experience would be to avoid cold roof design where possible.

Laps are then hot air welded to form seams which are stronger than the membrane itself. Some of britain s best known buildings feature sika sarnafil roofs and it is the system of choice for applications in education commerce retail leisure travel and many other sectors. No insulation is on top.