Before manufactured trusses the simplest roof construction involved extending exposed rafter tails beyond the walls of the house.
Flat roof rafter tails.
This was then foamed to complete the air seal.
If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.
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.
A chalk line snapped between those marks aligns the plumb cuts on the tails perfectly.
Attach the horizontal beam by using a nail gun.
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.
Rafter tails are installed long.
The design of your eave is dictated by the construction of your roof.
After that to make it flush with the roof of the existing house cut the two outer rafters.
Repeat the process for your other rafters.
Trusses streamline construction but it s important when using them to make sure the resulting eave works with the design of your building.
Rotted wood rafters in a roof are a serious issue.
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.
Cutting the rafter tails from above causes the kerf to open naturally as you cut and it lets the waste fall away harmlessly.
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.
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.
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.
Then the plumb cut is measured and marked on the first and last rafters.
Wood rotting from the inside out compromises the structural integrity of the rafter.
The lower ends of the rafters usually extend.
Go back and check out photograph 10.
