Tying a gable roof into an existing roof is a long expensive project usually undertaken only when there is a major addition or renovation to a house.
How to match a roof addition.
But it can be extremely difficult to match new materials to old.
If the ceiling of the new addition can be lowered an inch or 2 this gives us room to build a truss to match on the roof top.
The best way to tie your addition s roof in with the rest of the house is to take cues from the existing architecture.
You may need a structural engineer to help with design of trusses and rafters.
It is not a job for beginners.
So if your house has casement windows for example oversized crown moldings or wide plank floors you ll likely want to repeat those design elements in the new addition.
When matched to the angle and proportions of other rooflines on the house your gable roof will add visual interest and character to the home making the addition look like an asset that belongs with the house.