Flat Roof Rafter Tails

Trusses streamline construction but it s important when using them to make sure the resulting eave works with the design of your building.

Flat roof rafter tails.

Rain and snow are the enemies of a roof. Depending on the size of your structure you will need to cut several or many more. At this point you ve cut 1 roof rafter. Rafter tails a gable roof is framed with rafters that run diagonally from the peak of the roof down to the tops of the exterior walls of the building.

Cutting the rafter tails from above causes the kerf to open naturally as you cut and it lets the waste fall away harmlessly. The lower ends of the rafters usually extend. Rafter tails are installed long. Go back and check out photograph 10.

If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. The design of your eave is dictated by the construction of your roof. Repeat the process for your other rafters. This was then foamed to complete the air seal.

When rafter tails the ends that often extend beyond the roofline are damaged they can be repaired through a process with the delightfully descriptive name scabbing. A chalk line snapped between those marks aligns the plumb cuts on the tails perfectly. All roof rafters should be identical so follow the same steps to measure the plumb cut tail cut and birdsmouth cut. Wood rotting from the inside out compromises the structural integrity of the rafter.

Attach the horizontal beam by using a nail gun. On the front of the roof edges the original roof deck sheathing was cut back flush with the wall and the fully adhered membrane folded down around the rafter tails to catch the wall water control layer and air control layer. Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge. Before manufactured trusses the simplest roof construction involved extending exposed rafter tails beyond the walls of the house.

After that to make it flush with the roof of the existing house cut the two outer rafters. Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house. Commonly what you can see of the rotted wood is only part of the problem it is what you cannot see under the surface of the wood that can be the main issue. As years of wear and tear create small cracks particularly at the lower edges of the roof line where snow weight accumulates and moisture pools moisture can seep through to the rafters beneath the roofing and begin to rot.

Cold roof insulation between rafters wnapor barrier on warm side below orw sheatiiing roofing roofing 2 x 8 sleepers notched for vent aligned wi rafters flashing over rooang fascia sheatiiing 2 x 4 sleepers aligned w rafters provide.