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.

The new flashing should go under the old felt and over the new felt and new roll roofing. The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley. 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. The big idea is that layers of the lower roof should sit below corresponding layers of the upper roof.

The roofing cement will resist possible leaks overnight. 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. Now take the 4x4 beams and erect them to the perimeter outside the porch about four feet apart. 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.

After nailing down these two boards dab roofing cement on the nails and along the outside edge. After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in. Set the last truss or set of rafters for the new roof at the outside edge of the existing roof. Chip away the existing gravel exposing the stone underneath.

If you don t remove the stone and you put new roof over it the water will get underneath the gravel so make sure you clear it away. Roofing nails to the existing structural sheathing. The ends of the shed rafters. Up from the valley center and cut through the shingles and underlayment.

Then mount new trusses on the new addition walls. The lower the slope the further it should extend. Depends on the slope of the new roof.