How To Tie A New Roof To An Existing Roof

Tying in to an existing gable roof.

How to tie a new roof to an existing roof.

Tie into the end of an existing gable roof by removing existing facing boards wall siding and any other obstructions back to the first truss of the old roof. Up from the valley center and cut through the shingles and underlayment. Now take the 4x4 beams and erect them to the perimeter outside the porch about four feet apart. 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.

Butt the first new truss against the old one. Set the last truss or set of rafters for the new roof at the outside edge of the existing roof. After nailing down these two boards dab roofing cement on the nails and along the outside edge. The lower the slope the further it should extend.

The roofing cement will resist possible leaks overnight. Chip away the existing gravel exposing the stone underneath. The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley. Depends on the slope of the new roof.

The new flashing should go under the old felt and over the new felt and new roll roofing. Measure between that truss or rafter and the valley rafters with a tape measure and cut short rafters. The big idea is that layers of the lower roof should sit below corresponding layers of the upper roof. You ll need to remove the existing shingles and cut back the existing eaves to make room for the shed roof then nail a two by six ledger board on the existing roof.

Roofing nails to the existing structural sheathing. After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in. Then mount new trusses on the new addition walls.