How To Tie A New Roof Into An Old One

In this video we show you how to tie in an existing roof with a new roof to avoid any future leaks or issues putting you back where you started.

How to tie a new roof into an old one.

Tying a new roof into an old one fine homebuilding this article answers the question what s the best way to attach two roofs included is a discussion of the mike guertin s a builder and remodeler in east greenwich steps and process to safely tie a new roof to an old roof. The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley. Strip the roofing from the old roof at the connection point to. Tie a new gable or hip roof to an existing gable or hip roof with valley rafters which perform the same function as ledgers.

After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in. Up from the valley center and cut through the shingles and underlayment. When a shed roof ties into an existing roof the new roof could be a simple lean to that covers a deck or porch or it could be the shed roof of a substantial addition. If it comes out to an odd number like 7 5 adjust the spacing to make it 8 rows.

Measure your roof from the bottom to the top of your porch roof plus one row your last shingles will slide under your home s shingles. To tie into the side of an existing roof put a new roof truss on the walls of the addition brace it upright then snap chalklines on the shingles to mark the center line of the new roof valleys where old and new roofs will connect. The roof i.