They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation.
Roof tile overhang.
Doing so keeps basements and crawlspaces dry and it also helps to.
For a relatively average house with a 1 500 square foot roof the total of underlayment and tiles will equal something approaching 8 tons in weight.
Subtract 1 1 2 inches from your first mark and make another mark on the underlayment.
The fairly cheap and common shingle roofs that many people have are quite light.
If you are transitioning from a light roof to a tile roof the weight difference will be substantial.
Roof overhangs might look relatively routine but there is a lot of design thinking that goes into creating the optimal dimensions for each one.
Extending a gable roof can be tricky since it involves working on the roof but you may be able to do it yourself if you only need to add 1 2 2 inches 1 3 5 1 cm.
You will need to do this at the other end of the roof as well.
Too little can allow water to seep into rake or fascia boards.
However for larger extensions you ll need to hire a professional to get up there and remove large portions of the roof before extending the overhang.
We love the look of the no overhang scottish style roof line as well.
Your tiles will need a 1 inch overhang and the eave and a half inch head lug to the rear of your tile.
Too much overhang and the shingles could blow off in high winds.
With the west east overhangs the main use is siding window protection and keeping rain snow from foundation.