Flat Roof Rafter Tails

At this point you ve cut 1 roof rafter.

Flat roof rafter tails. Depending on the size of your structure you will need to cut several or many more. Cutting the rafter tails from above causes the kerf to open naturally as you cut and it lets the waste fall away harmlessly. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. 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.

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

Wood rotting from the inside out compromises the structural integrity of the rafter. Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge. The design of your eave is dictated by the construction of your roof. A chalk line snapped between those marks aligns the plumb cuts on the tails perfectly.

Attach the horizontal beam by using a nail gun. This was then foamed to complete the air seal. Rain and snow are the enemies of a roof. 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.

Repeat the process for your other rafters. Before manufactured trusses the simplest roof construction involved extending exposed rafter tails beyond the walls of the house. As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. All roof rafters should be identical so follow the same steps to measure the plumb cut tail cut and birdsmouth cut.

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. After that to make it flush with the roof of the existing house cut the two outer rafters. 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. Rotted wood rafters in a roof are a serious issue.

Go back and check out photograph 10.