Tying in perpendicular to existing roof start tying in a new gable roof perpendicular to the old one by removing old shingles and nailing 2 inch by 6 inch valley boards along the chalk lines you marked.
How to tie in perpendicular roof addition.
Drive 1 2 inch lag.
The roof simply needs to be finished as normal but the shingles will need to be cut at an angle so that they fit snugly up against the original roof.
The big problem is how we can correct the roof and make it square straight on the new part but still bring it over enough to cover the pie section entry and stairs.
The slope of the new structure s roof will ease into the present house roof.
Connect a flat roof to a sloped or pitched roof with a ledger board.
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.
After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.
Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof.
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.
Up from the valley center and cut through the shingles and underlayment.
Angles will need to be continuous and not stop abruptly creating valleys in the roof for snow or rain to collect.
Step 5 sealing the roof once the roof is finished you will then need to seal the joint between the new and the old roof.
Connect the roofs at a perpendicular angle that will not create a snow or moisture problem.
The gable roof on the porch addition was framed with a dropped structural ridge supporting the common rafters above.
Miter these at the top to fit a ridge board.
The joint should be sealed with plenty of roofing compound and then the.
Remove siding from the house where the new roof will attach to expose.
Again choosing the easy way out we opted to build blind valleys aka california valleys where one intersecting roof is built on top of the other.
We want the roof to be square and the existing lower roof to tie in below the new roof line since the roof on the existing part is being modified to suit the new part anyhow.
To make the blind valleys we attached sleepers to the shed roof locating them.