When two gable roof lines.
Tie two gable end roofs together against an existing house.
In a standard gable roof the ridge board does not provide structural support for the roof and is used primarily as a nailing surface for the upper ends of the rafters.
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Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house.
Butt the first new truss against the old one.
The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley.
Here we will focus on adding length to the end of a house roof.
Then mount new trusses on the new addition walls.
Up from the valley center and cut through the shingles and underlayment.
You also may have to remove siding from a wall and build a second wall or reinforce the original to support a second gable roof.
Attach the horizontal beam by using a nail gun.
After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.
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Strip the roofing from the old roof at the connection point to expose.
Either the addition is added to form a t shape to the house with the ridge running perpendicular to the main house roof or the addition is continued on the end of the house making it longer with the ridge running the same way as the existing house.
When adding a new gabled roof addition to your home you will need to find a way of joining the two roofs together.
Called tying in this helps to weatherproof and strengthen the joint.
Tying in to an existing gable roof.
If you are building an addition to an existing house with a gable roof you will have to remove shingles and decking on the old roof to connect the new roof.