On 27 Nov 2006 06:02:04 -0800, "cowznofsky" wrote:

I have to do some repairs on a garden shed. I need to take off about 5
rows of shingles and replace
one of the roof boards on the bottom edge.

Now, when I put new shingles on, should I:
1) Re-shingle over the entire roof, meaning that the bottom rows go on
the new wood, and then I cover the remaining shingles as I move up the
roof, which will leave a bump.

or

2) Just re-shingle up to the remaining good shingles, and push the new
ones under the old ones.

Since it's a small roof, the cost and time for shingling are not an
issue. But I don't want to rip up any more old shingles.


You could TRY sliding new shingles under the edge of the old ones,
but if they're anywhere near the end of their life, they'll
just crumble and you'll end up replacing them anyway.