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Posted by DanG on June 3, 2006, 3:42 pm
I know this isn't fun.
If you want to do your own diagnostics, here is how I would
proceed. Wait until everything is basically dry. Do not cover up
your view of the bottom of the roof. Use a garden hose and rig up
some way to control where it is directing water. Start below your
apparent leak. Allow water to run for 30 minutes at each set. Do
not force water up under the shingles, let it flood downward just
as rain water would. Gradually move the water hose up hill.
Monitor the ceiling you have open. When the roof begins to leak
you know exactly what is allowing the water in.
I do not recognize your description of a purple plastic strip.
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)
dgriff237@7cox.net
> The briefest version of the problem is this: We've had damp
> wallboard in the bathroom (part of the master bedroom addition)
> since we bought the house two years ago. The guy we bought the
> house from was a builder of some sort (not a good sort,
> evidently) and put the addition on himself, the summer we bought
> the house. Repair guy 1 said the dampness was from an ice dam,
> he replaced the wallboard. It got wet again. Roofer two said
> that it was either seepage from the fan vent (which he repaired)
> or water coming from the old roof section on the second floor,
> running under the roof of the addition. So we put on another
> roof over the second floor - again, a reasonable suggestion,
> because that roof was getting really old. He also replaced the
> wallboard. It took a few more months to get damp, but it got
> wet again. We called Roofer 2 back, and he suggested we
> re-flash the addition, since we've had other problems with
> leaking around the addition's flashing. So we did that. The
> wallboard not only didn't dry out, it completely fell in.
> (That was the short version. The long version is the same, but
> with a lot of swearing.)
>
> Ok, so it's been raining for about three days. My husband and I
> pulled down all of the wallboard in the bathroom, pulled out the
> insulation, and now we're looking directly at the underside of
> the 1.5 year old roof. I'm seeing wet wood (the flat sheets of
> roofing wood are wet - the stuff that looks like particleboard,
> but isn't), lots of water dripping through nail holes, and
> something that looks like a purple plastic 6 inch by 24 inch
> thing, nailed to the underside of the roof. Water is dripping
> out of that, too.
>
> What the hell am I looking at? What is the plastic thing? Why
> is it there? Why is water coming through nail holes, if the
> wood has new asphalt shingles and new flashing?
>
> Advice, please? We've already spent a fortune not repairing
> this problem. Before I call another roofer, I want to be able to
> be sure that this is the LAST time I'll be replacing the damned
> wallboard.
>
> Thanks.
>
> Donna
>
>
>
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