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-   -   did my contractor install my ice and water shield correctly? (http://www.diychatroom.com/f9/did-my-contractor-install-my-ice-water-shield-correctly-74772/)

areebis 06-27-2010 10:18 AM

did my contractor install my ice and water shield correctly?
 
I had my roof torn off and re done but my contractor left on the original ice and water shield and went over it with a new layer and in my city you need 6' so he put another layer after that,is this correctly done or against manufacturers warranty on the shield ? HELP ME

seeyou 06-27-2010 12:29 PM

Sounds OK to me. What's troubling you about it?

MJW 06-27-2010 05:24 PM

If you read the box on I&W, I don't believe they even have a warranty. Never did before, I haven't looked in awhile. I don't think any underlayment has a warranty of it's own.

Yes, that is acceptable for most areas. It usually comes down to the building inspector. We have done some where all they wanted was new felt over the I&W.

Slyfox 06-27-2010 05:27 PM

Quote:

Originally Posted by seeyou (Post 461963)
Sounds OK to me. What's troubling you about it?

I agree, if he cleaned the existing 'old i&w' properly and then installed new it should be ok.

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canadaclub 06-27-2010 05:50 PM

The OP brings up a good point though. To be honest I don't know if IWS can be easily removed after years of heat, and if not, what harm can it do to lay over it? Even better, if it is still intact, why not felt over top to the ridge or expand the distance to 6 ft?

seeyou 06-27-2010 05:54 PM

Quote:

Originally Posted by canadaclub (Post 462104)
The OP brings up a good point though. To be honest I don't know if IWS can be easily removed after years of heat, and if not, what harm can it do to lay over it? Even better, if it is still intact, why not felt over top to the ridge or expand the distance to 6 ft?

Easily is not a word that should even be in that sentence.

AllanJ 06-27-2010 06:05 PM

What counts is two rows of ice & water shield put down, one over the existing shield and the other up higher?

With installing just one new row, up higher, there are nail holes from the old shingles in the old shield.

canadaclub 06-27-2010 06:10 PM

I see where your coming from Seeyou, and since you made that statement can you shed some light on the matter? I have yet to repair/replace a roof which had it on...usually just felt. I have installed it and, in doing so, find it inconveiable to take it off...even when freshly laid.

kwikfishron 06-27-2010 06:13 PM

I agree with everybody “but” that’s assuming the sheathing underneath was still in good shape.

canadaclub 06-27-2010 06:23 PM

Sorry Allan, I was typing when your response came in...but another good point. I think, because the IWS is a rubber type membrane, it should seal around previous nail holes unless its been hacked to crap.
Since you brought it up though..calling all roofers..If a layer of iws IS laid down with some obvious holes, is it possible to fan a propane torch over to melt it into a seam?

I know, dumb question, since the the cost is pretty cheap but just wondered about the logistics

Tom Struble 06-27-2010 07:02 PM

sometimes you can't even get the shingles off the old i&w:censored:

canadaclub 06-27-2010 07:57 PM

lol thats what I wondered

OldNBroken 06-27-2010 10:17 PM

Quote:

Originally Posted by tomstruble (Post 462145)
sometimes you can't even get the shingles off the old i&w:censored:

Something the geniuses didn't take into consideration 20 years ago when they started pushing it as the magic bullet for crappy roofing.

I've been chuckling about for a long long time. A few we've had to do so far we've had to tear the sheeting, i/w and shingles off together because they fused into one big mass. Although I have noticed the Grace and others with the film on the surface haven't been much issue removing the shingles from them. The granulated ones are the worst to deal with.

I see no reason you can't leave it and just felt over the top of it as long as the shingles can be removed smoothly.

johnrem 06-29-2010 05:52 PM

This is why you hired a pro...so you don't have to worry

RidgelineRoof 07-01-2010 10:00 AM

We take everything off. Most people use felt paper though, not IWS. We have to remove it though on a re-roof. It's impossible to inspect the quality of the wood under the roof without taking it off.


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