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Shrinking Spray Foam

 
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Old 09-13-2013, 07:08 AM   #21
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Re: Shrinking Spray Foam


This happened to me once as well. I can't post pictures yet but they look a little like yours but without any brownish evidence of too much heat.

It started to shrink after 2 days, called the foam contractor after 3. He came 2 days later and ripped it all out and resprayed without trying to blame anyone but himself.

It only happened for about 120 square feet (3" of foam in the wall). He said it happens once in a while when they get to the bottom of a barrel. If they don't switch it out early enough the ratio can get off. I don't know if this is true but I didn't pursue it much as he fixed the problem and I haven't had any problems with him since.


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Old 09-13-2013, 10:33 AM   #22
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Re: Shrinking Spray Foam


He said the problem seems to be that they sprayed when it was cold . I did a little research and found that the cold wouldn't have caused it to shrink . What may have caused it to shrink was that the material coming out of gun may have been to hot and should've been adjusted accordingly .According to their website www.airsealis.com they use a material manufactured by icynene .
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Old 09-17-2013, 10:02 PM   #23
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Re: Shrinking Spray Foam


I finally contacted an engineer from icynene and e-mailed him the photos of the shrinking foam . He said he will contact the spray foam contractor and keep me posted . Meanwhile foam contractor called me to say that the wood was to wet and that's what caused it to shrink.He said he can send a crew out to touch it up and be finished with it . I told him I contacted a engineer from icynene and together we will figure out who is at fault and what needs to be done . He's looking for an easy way out but that's not going to happen . I have little patience for someone not man enough to take blame for his mistakes .
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Old 09-18-2013, 05:29 AM   #24
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Re: Shrinking Spray Foam


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Originally Posted by Eaglei View Post
I finally contacted an engineer from icynene and e-mailed him the photos of the shrinking foam . He said he will contact the spray foam contractor and keep me posted . Meanwhile foam contractor called me to say that the wood was to wet and that's what caused it to shrink.He said he can send a crew out to touch it up and be finished with it . I told him I contacted a engineer from icynene and together we will figure out who is at fault and what needs to be done . He's looking for an easy way out but that's not going to happen . I have little patience for someone not man enough to take blame for his mistakes .


First it was too cold, now it was too wet...
Even if either of those were true it is his responsibility. If the foam isn't going to work that day, don't spray it.

I'm sorry he's giving you the runaround like this. It doesn't sound like he will be getting more business from you.

It's a good client you have that is willing to wait for you to find the right way to fix this. I hope the icynene rep can get this guy to make this right.
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Old 03-23-2014, 06:26 PM   #25
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Re: Shrinking Spray Foam


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To add to as what can be done. I always tell my students to always spray a few samples for each jobs, job file and always list material and batch numbers of all materials for just in case. And it's not a bad idea for a builder or homeowner to require sprayed retained samples as well for problems just like this.
How large of a sample should I prepare for? 2 bays, 36" tall or so?

I would certainly think the sample would need to be oriented the same as the area to be sprayed, that is, if walls are to be sprayed, the sample should be vertical also.

Elaborate, please.
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Old 03-23-2014, 06:52 PM   #26
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Re: Shrinking Spray Foam


I think he was referring to a sample as in a test batch to make sure everything was working properly before spraying it on the actual substrate - not as one to keep.
The ones to keep or send off is from the actual wall where you pop a few core samples - I think the SPFA is 1 for every few hundred feet of sprayed wall or roof. This is done while the applicators are still there so they can quickly fill it in
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Old 03-23-2014, 07:09 PM   #27
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Re: Shrinking Spray Foam


I like the idea of keeping a sample wall to see what happens over time.

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