Parts Of A Roof Rafter

Parts of a rafter.

Parts of a roof rafter.

The larger rafter that sits directly on a tie beam and used to carry a purlin. The cripple jack rafter is also part of a common rafter but it touches neither the ridge of the roof nor the rafter plate. The horizontal beam connecting two rafters that intersect at the ridge. The part of the rafter that sits on the wall plate is known as the bird s mouth.

Flashing if you have vent pipes chimneys or valleys on your roof you need to protect them and seal them against. In general a rafter needs to be placed every two feet at least for maximum load bearing support and security. The top of a a rafter usually joins a ridge. The central vertical post in a king post roof truss.

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. Decking or sheathing usually made from 1 2 inch plywood the decking closes and reinforces the roof structure and provides a nailbed for the shingles. Gutter and downspout the key role of a roof is to protect your house from water and to make that. The ridge cut also called the plumb cut at the top of the rafter the birdsmouth cut which itself comprises 2 different cuts where the rafter meets the building s wall and the tail cut at the base of the rafter.

Essentially the spine of a conventional stick framed roof the ridge board is sandwiched between the meeting ends of the roof rafters. A waterproofing seal installed along the roof s valley line with taktekkernbergen no. There must be no gaps in the precision of the fit. The ridge is the horizontal peak of the roof.

Collar tie and beam a collar tie or beam figure 7 7 is a piece of stock usually 1 x 4 1 x 6 l x 8 or 2 x 4 fastened in a horizontal position to a pair of rafters between the plate and the ridge of the roof. Measure and mark cap plates for each rafter. Part of a roof s frame a ridge board runs horizontally along the peak of a sloped roof. When you cut the rafters you ll need to make 3 separate cuts.

If there is a noticeable gap then it should be a red flag for investigation. The miter is simply a plumb cut. A chief structural member as it is a load bearing wall. Here s a closer look at several other components of your rooftop system.

One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. A piece of lumber laid horizontally on a wall to support the rafter. The ridge is the peak where two sloped roof sections meet. Cap plates are little metal braces that will secure the trusses to the walls.