Re: PU foam remediation (SPF)

[Guest guest]

Jeffery:

Amines are the main culprit in the serious offgassing homes I have encountered

as a builder. I am not a big fan of SFP. Too many builders use the stuff to hide

poor construction issues. All too often SFP hides water intrusion or moisture

buildup issues and when they are finally discovered everything is rotten to the

core. Unfortunately, not enough builders today remember the problems we had with

EIFS.

Depending upon the location and the amount of poorly applied foam, the

offgassing will continue few months to years. The bad insulation can be removed,

however, the area should be re-encapsulated with more foam. Have not seen a

house that was uninhabitable as a result of bad foam.

Installers are quick to recommend foam and very slow to resolve any problems

that may arise as a result. Go figure...

Would like a copy of the LaPolla report.

Will

>

> ,

>

> I have dealt with about 8 cases of bad spray polyurethane foam (SPF).

> Most have had to be removed.

>

> The errors are usually blamed on installers and I am not certain that

> this is the case. If too much B is added, the odor is that of the

> tertiary amine catalyst.

>

> Other possibilities included a large variety of VOCs including many

> hydrocarbons and aldehydes, acetic acid, 1,3-dioxolanes, dioxane, etc.

>

> Too much A may yield some of these.

>

> If too much closed-celled foam is sprayed in one " lift, " overheating

> can result in decomposition and a whole series of other compounds.

>

> I have a health risk assessment from LaPolla if anyone is interested;

> send email.

>

> May

> May Indoor Air Investigations LLC

> Tyngsborough, MA

> www.mayindoorair.com

>

>

>

> > ________________________________________________________________________

> > 1a. Re: PU foam remediation

> > Posted by: " scottarmour@... " scottarmour@... scottarmour@...

> > Date: Tue May 8, 2012 10:47 am ((PDT))

> >

> > What chemical is offgassing that is causing a 'sensitization'?

> > Is there evidence that this chemical is present and if so, what

> > levels? (I know about the immediate release of the isocyanates

> > during the application and immediate expansion prior to drying and

> > hardening)

> >

> > Is there literature and research or case studies that show the PU

> > will offgas voc's? if so, what chems? levels? time (half-life, etc.)?

> >

> > Thanx.

>