Timber Flat Roof Detail Section

Timber in the form of rough sawn or planedboards or planks can be used as the loadbearing deck to a flat roof fig.

Timber flat roof detail section.

The flat roof covering can also be epdm. Parapet detail joists perpendicular 3 13. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. The construction of the flat roof is similar to that of the timber upper floor.

This ethylene propylene diene monomer rubber covering is very versatile long lasting and very strong. Dormer in section 3 11. Dormer in perspective view 3 12. From there the flat roof system you choose will determine the materials you apply.

24 mm 20 and should have. For additional stability you can also use steel joists that are built into one or both of the walls. Contemporary designers frequently aim to produce the same clear and simplified forms that appeared at the beginning of the 20th century but are now free to use a wide range of new materials and construction techniques that reflect present day technology. Trada and approved document part a give guidance on sizes of joists for flat roofs relating to spans and loading.

Flat roof joist and decking 3 10. Parapet detail joists parallel details in section 4. 3 05 timber frame pitched roof. This flat roof covering can be roofing felt usually 3 layers with a mineral chipping topping to soak up the heat of the sun which protects the felt from both melting and breakdown under uv rays.

Today flat roofs are used by architects for the same reasons that they became a cornerstone of modernist architecture. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. 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.

Intermediate floor joist parallel 4 3. Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.