While it isn t that difficult to build rafters the wall system supporting the roof must be level and square.
How to level roof rafters.
It is well worth the effort to rough out the wall system to be square and level so the roof framing is simple.
If your rafters are still sagging a bit and it is causing your roof to dish out a little in the center of the roof sides add a 2x4 that goes all the way across the rafters in the center of the length of the rafters.
Mineral wool friction fits between rafters providing an optimum seal and preventing gaps associated with rigid foam boards which can otherwise lead to unwanted heat loss.
If you notice that there is a visible dip in your roof chances are you have a problem with one or several rafters and you may soon be facing more issues like water leaks bowed out walls or your roof caving in on you.
In order to build rafters you need to know the roof pitch and the roof span overall width of roof.
Use your string line to determine how much the roof need to go up.
Download our solutions guide download our pitched roofs rafter level pdf.