Pitched Timber Roof Detail

A pitched roof is in contrast to a flat roof which technically is any roof with a slope less than 10.

Pitched timber roof detail.

Ventilated batten void warm roof eaves 3 05 timber frame pitched roof. Pitched roofs are generally used where rainfall is heavy. The presence of the beam becomes indispensable when the cross sectional area of the rafters tends to exceed the recommended length without support. The minimum pitching or sloping degree for the roof is decided by the minimum slope necessary for excluding the roof covering and drain rainwater to eaves or valley gutter.

Pitched roof timber sizes. 3 04 timber frame pitched roof. 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. We know that the roofs are generally provided at top to cover and protect the structure from different weather conditions.

The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction. A truss roof using factory made trusses which are delivered to site complete and just erected. In a mono pitched roof the beams are supposed to go horizontally forming a 90 degree angle with the rafters. However in practise they tend to be much shallower commonly being expressed as a gradient and can be anywhere from 1 40 to 1 80.

Pitched roofs are generally provided with a pitch of about 20 degrees to the horizontal for slates and 40 to 60 degrees for tiles. Pitched roof is a type of roof which is provided with some slope as structure covering. 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.

Construction details of pitched roof. Clay and concrete tiles have retaining nibs on the back of the tile which rest on the wooden lath slates which are essentially sheet materials have holes drilled in them and then nails are hammered though the holes into the wooden lath. These are an indispensable aspect of mono pitched roofing. Timber pitched rooftop construction details focus on the timber construction that is commonly used in most roofing constructions.

There are two basic methods of pitched roof construction. Roofs tend to be either pitched or flat and typically in residential construction timber is the most common material used. The roof is a key element of the building structure providing protection from the elements and has a vital role in reducing heat loss from the building. The building regulations in the uk provide guidance on roof design.