The construction of the flat roof is similar to that of the timber upper floor.
Timber roof construction details.
A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc.
These hip rafters run at a 45 angle from each corner of the building to the ridge.
Timber framed and historic buildings may be framed with principal rafters or timber roof trusses.
Internal wall to internal wall junctions 3.
Timber in the form of rough sawn or planedboards or planks can be used as the loadbearing deck to a flat roof fig.
24 mm 20 and should have.
Timber is a heavy material that adds strength to your roof but comes at quite the cost.
Type of roof because it is braced by four hip rafters.
Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls.
Tile hanging off timber frame 1 8.
Boardsmust have a nominal thickness of min.
A disadvantage of the hip roof is that it is more difficult to construct than a gable roof.
Timber frame standard details september 09 building 1 grosvenor court hipley street.
Tank stand and walkway 3 3.
3 05 timber frame pitched roof.
For additional stability you can also use steel joists that are built into one or both of the walls.
The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
There are two basic methods of pitched roof construction.
A truss roof using factory made trusses which are delivered to site complete and just erected.
Common rafters are the main timbers used to build a gable roof and are in almost every hipped roof construction as well facia soffit construction click here for help installing fascia soffit boards that finish the bottom of the rafter feet off neatly and provide something for your gutters to fix to.
Render on timber frame 2.
Intersecting the intersecting roof consists of a gable and valley or hip and valley.
When constructing a pitched rooftop with timber this can be an incredibly labor intensive build.
Ventilated batten void warm roof gable 3 06 timber frame timber flat roof 3 07 timber frame timber flat roof with parapet 3 08 timber frame lintel at window head 3 09 timber frame windows and doors jambs and cills specification within an example should 3 10 timber frame ground bearing floor insulation above slab 3 11 timber frame ground bearing floor insulation below slab.
Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading.
Timber pitched rooftop construction details focus on the timber construction that is commonly used in most roofing constructions.
Timber boarding on timber frame 1 9.
