Timber Cladding Flat Roof Detail

Having a manual for warm flat roof construction with details and a summary of rules to follow helps.

Timber cladding flat roof detail.

The boards are nailed to vertical battens on the substrate this could be masonry timber frame etc. Flat roof joist and decking 3 10. Non loadbearing wall junctions 1 5. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off.

Details on plan 1. Design of timber cladding details. Parapet detail masonry cavity wall flat roof with parapet insulation above joists. As such it should be highly durable and tear resistant in accordance with type 1 membranes in bs4016.

Membrane edge fixed timber roof element hose clip pipe collar. Separating wall junctions 1 4. Timber boarding on timber frame 1 9. Supporting the zinc roof.

Vertical timber cladding can come in the form of tongue and groove or board on board along with open joint options too. The inner wall structure should be fitted with a breather membrane this serves to seal the building against damp and weather penetration. Flat roof detail masonry cavity wall flat roof insulation above and between joists. Horizontal flashings should provide weathering to a minimum of 75mm above the intersection with the roof.

Horizontal timber cladding is probably the most common and perhaps simpler option. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Detail design timber cladding basic principles in principle any timber cladding should be designed as a rainscreen. That will help you remember certain factors and details to build the best possible flat roof.

Timber frame flat roof detail. Following on from our introduction to standing seam zinc roofing design the team at elzinc look at three typical roof build ups for standing seam zinc roof construction don t forget to subscribe to receive the other posts in this series. Where a flat or pitched roof over an enclosed area abuts a wall or a balcony abuts a wall cavity trays should be linked to the flashing to prevent water penetrating into an enclosed area. Parapet detail masonry cavity wall flat roof with parapet insulation above joists.

The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof. Render on timber frame. Timber frame flat roof detail. Others would treat even steeper pitches as flat roofs.

Assuming that the cladding will always be subject to some penetration of moisture a separate protective membrane will be necessary behind the cladding largely protected from wind rain and daylight by the cladding itself. Tile hanging off timber frame 1 8.