This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles.
How to add peak to existing roof.
Make a rafter cutting jig by measuring 12 in.
For overhang and 1 1 2 inches for the sub fascia board.
Make a simple rafter jig if the slope of your dormer roof is the same as your old roof hold a scrap of plywood against the old roof boards and draw a level line on it.
If you re adding to the gable end of the house the side wall that goes up to the roof s peak it s fairly easy to extend the existing roofline over the new space says curt schultz a realtor architect builder in pasadena calif.
How to tie a additions roof to existing roof roof designs to attach to existing home how to construct a roof from an exsisting shead how to attach a deck roof to existing roof how to add a roof over porch cost to tie into existing roof attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing.
We wanted to make the porch roof as steep as possible while keeping the peak of the roof below the wall to roof intersection at the top of the shed roof.
That s a simple low cost solution that can tie in well with the main house.
Using 2 x 4 s measure 24 inches plus an additional 6 in.
Nail it near the peak of the trusses.
Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one.
After a taking some measurements and doing a bit of ciphering we established that the steepest pitch we could use on the porch roof was 4 in 12.
Remove all the shingle caps from the roof ridge from one side of the roof to the other by prying them up with a pry bar and pulling out the nails with a claw hammer.