roof tie in

[cbmopar]

I have added an addition to my house and do not have any info on how to tie in a roof. It is on the gable end. I have the sheathing butted up to the existed roof so that they are on the same level. At what point do you start to tie in the existing roofing? The addition is 4' x 13', so the tie in is approx. an 8' foot run to the ridge and 4' to the edge. The existing roofing is 30 year asphalt shingles, that is 5 years old. I have roofed before, :o but have never done a tie in. I had a local roofing contractor give me an estimate, $2500.00 for this 4'x13' addition. All they have to do is install new shingles! Any help appreciated. Thanks, Carl

[Tom R]

Just start at the bottom, and working your way up, carefully remove every other existing shingle along your edge, then start running your 'rows' of new shingles from the bottom up, butting the 'new' to the 'existing'.

[mjpliv]

Do it on a hot day so that the "old" shingles bend back easily without tearing. There is a flat, notched tool available that will reach under a shingle and "extract" the nails.

The shingles will not be an exact match even if they are the same color name from the same manufacturer unless you are incredibly lucky and manage to get your shingle from the same "lot" number. The manufacturing process causes slight variation in colors from one production run to another.

[doyle]

Actually, I find that removing old shingles in a careful manner to be easiest early in the day before they get hot and the glue re-sticks. When the glue is kinda cold, the shingles will be much easier to 'snap' apart to get to the nail underneath. Just don't bend the shingle you are wanting to keep too far as it will break.

When the glue is hot, it really sticks to the back side of the shingle aboove it (as intended) and it's VERY easy to tear the good shingle since it is soft.

More than likely, your old shingles were applied like most roofers do it nowadays, which is to run a "column" of shingles all the way up the roof. Each end of the shingles are staggered 6", so just start removing your old shingles back until you get to that staggered 6" point and work your way up the roof.

After you've done that, just start back at the bottom with your new shingles doing one column at a time until you get to the new roof edge. Be sure and put a 1" or 1-1/4" shingle overhang past your new fascia board or drip edge.

[cbmopar]

Thank you all who have responded. I plan on trying it today. This all started with a quote from the original roofer for $2500.00! The entire new roof addition is 2 4x8 sheets of plywood. I went to a roofing supplier and got the same material for $128.00 Wish me luck.
Thanks Again to all. Carl