A roof is part of the building envelope.
Roofing construction parts.
This layer covers the rafters and is beneath the shingles and membrane layers.
A roof is the top covering of a building including all materials and constructions necessary to support it on the walls of the building or on uprights providing protection against rain snow sunlight extremes of temperature and wind.
Roof edge or eaves edge all the boards running along the edge of the roof or eaves.
The construction of a typical roof overhang eave or soffit is shown in our sketch.
Finally the exterior layer exposed to the elements wind rain snow hail is the shingle layer.
There are several types.
Underlayment the underlayment of a roof is the black paper that s laid over the plywood sheeting in order to seal the roof from damaging elements snow rain ice etc.
Also known as a fascia.
Using seasoned or dry wood for building the sheathing prevents the wood from buckling or pulling away as the wood dries.
A roof is much more than just the decorative top of a building.
Sheathing is a layer used as the base of the roof.
The use of a membrane is typically required a waterproof membrane a sweat sheet or vapor barrier with the underlayment paper serving the triple function.
Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates.
A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework.
In 80 of residential houses shingles are made of asphalt or asphalt composition materials.
Parts of a roof the main structural parts of a roof are ceiling joists ridge board jack rafter hip rafter common rafters creeper rafters raking plates out riggers and noggings or last rafter overhang.
Roof sheathing or roof decking.
Such roofs are built with mostly timber take a number of different shapes and are covered with a variety of materials.
The soffit is the enclosed portion of the roof that overhangs the house walls at the roof lower edges.
The characteristics of a roof are dependent upon the purpose of the building that it covers the available roofing.
A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.
Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing.
It is a waterproofing layer made of regular felt stacked above the solid.
Usually made from 1 2 inch plywood the decking closes and reinforces the roof structure and provides a nailbed for the shingles.
Under the quebec construction code certain kinds of particleboard are also authorized.
