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roof patching with plastic film?

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roof patching with plastic film? dave rangel 01-03-2007
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Posted by dave rangel on January 3, 2007, 8:58 am


I assume something like this exists, but wonder where to get it, and if it
should even be used for a roof patch.

We have a couple of sealed skylights that are letting in water when it
rains heavily. The roof is ok otherwise.

I was wondering if it's possible to spray on or paint on some kind of
liquid or gel that quickly cures into a continuous transparent plastic
film that will get into the nooks and crannies of the shingles and around
the skylights, and will adhere well to them.

It seems like that might be a way to quickly patch around the skylights
and be pretty sure that the patch will seal wherever it is that the water
is getting in.

Posted by Lawrence on January 3, 2007, 10:02 am



dave rangel wrote:
> I assume something like this exists, but wonder where to get it, and if it
> should even be used for a roof patch.
>
> We have a couple of sealed skylights that are letting in water when it
> rains heavily. The roof is ok otherwise.
>
> I was wondering if it's possible to spray on or paint on some kind of
> liquid or gel that quickly cures into a continuous transparent plastic
> film that will get into the nooks and crannies of the shingles and around
> the skylights, and will adhere well to them.

You get a can of roofing cement. It is a black tarry stuff that can be
applied with a putty knife. Cover the edge of the window frame where
it meets the shingles. A better solution is to remove and re-flash the
skylights. How long since they were installed??


Posted by Sev on January 3, 2007, 10:15 am



Unfortunately, I have to agree with Lawrence. I doubt any such quick
fix will work. It might, if you can see exactly where the leaks are,
and apply accordingly, but I think you'll be doing some careful
'excavating' first, and applying roofing/ flashing compound.
Skylights are notorious for this, especially when poorly installed.


Posted by Bert Byfield on January 3, 2007, 11:32 am


>> I assume something like this exists, but wonder where to get it, and
>> if it should even be used for a roof patch.
>> We have a couple of sealed skylights that are letting in water when
>> it rains heavily. The roof is ok otherwise.
>> I was wondering if it's possible to spray on or paint on some kind of
>> liquid or gel that quickly cures into a continuous transparent
>> plastic film that will get into the nooks and crannies of the
>> shingles and around the skylights, and will adhere well to them.

> You get a can of roofing cement. It is a black tarry stuff that can
> be applied with a putty knife. Cover the edge of the window frame
> where it meets the shingles. A better solution is to remove and
> re-flash the skylights. How long since they were installed??

Wear disposable clothes and gloves while working with this stuff. ;-)






Posted by Lawrence on January 3, 2007, 10:02 am



dave rangel wrote:
> I assume something like this exists, but wonder where to get it, and if it
> should even be used for a roof patch.
>
> We have a couple of sealed skylights that are letting in water when it
> rains heavily. The roof is ok otherwise.
>
> I was wondering if it's possible to spray on or paint on some kind of
> liquid or gel that quickly cures into a continuous transparent plastic
> film that will get into the nooks and crannies of the shingles and around
> the skylights, and will adhere well to them.

You get a can of roofing cement. It is a black tarry stuff that can be
applied with a putty knife. Cover the edge of the window frame where
it meets the shingles. A better solution is to remove and re-flash the
skylights. How long since they were installed??


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