The best way to tie your addition s roof in with the rest of the house is to take cues from the existing architecture.
How to match a roof addition.
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.
Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof.
It is not a job for beginners.
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.
Or if the addition is for a garage a lot of times the floor is lower than the house floor anyway and it can be adjusted up or down to make a regular framed wall come out slightly lower than the existing house wall.
But it can be extremely difficult to match new materials to old.
Also try to match finish materials such as siding roofing and trim.