Sarnafil Cold Roof Ventilation

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.

Sarnafil cold roof ventilation.

Since the 1960 s the performance and longevity of sika sarnafil roofs has been demonstrated in. 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. Sarnafil type a and type t. No insulation is on top.

Sika sarnafil is the leading manufacturer of single ply roofing membranes for flat roof waterproofing. In this way the roof itself is kept cold. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358. Mainly due to the added requirement for roof void ventilation and the likelihood of cold bridging occurring.

A cold roof is where all of the insulation is placed either between and under or completely under the joists or deck. 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. There must be an adequate void minimum 50mm between the deck and the insulation traditionally mineral wool to allow free movement of air and to prevent moisture vapour being transmitted from the building outwards where. Sarnafil s327 el is mechanically attached to the substrate using either the sarnafast or sarnabar system and suitable sarnafil fasteners.

The design of cold roofs usually occurs when external abutment height provision is problematic thus making a warm roof not achievable. 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. They also work well over non nailable substrates such as concrete steel and wood decks. You only need ventilation in a cold roof.

Installation is carried out by sarnafil trained contractors. Hopefully this video will help explain the difference between cold flat roof construction and warm flat roof construction this videos show detailed drawings. Sika s experience would be to avoid cold roof design where possible. In a cold roof construction the sarnafil membrane is installed directly to the structural decking usually timber with firrings to fall.

There must be an adequate void minimum 50mm between the deck and the insulation traditionally mineral wool to allow free movement of air and to prevent moisture vapour being transmitted from the building outwards where it could condensate in the roof. In general the installation of a cold roof is not recommended for the construction of new properties. Laps are then hot air welded to form seams which are stronger than the membrane itself.