Icynene or walltite foam spray

[buckbasher2]

Hello everyone, i am in the process of getting my crawspace ready to have it spray foamed. Not sure which product to use icynene or walltite. I understand a little about open and closed. My crawl spâce is exactly that crawl. Just enought to move around on your stomach. It is dirt and old stone and concrete for footings. I currently have about i foot of wall then dirt. I was told my quote included the cavity and 2 feet of wall and if i wanted to too dig down a foot to have it sprayed. It was mentioned to me that icynene would be best because it doesnt need to be covered up where as walltite would need to be covered once sprayed. Any help would be greatly appreciated.

[buckbasher2]

i am also being told that the walltite needs to be covered but because its in a crawl space it doesnt need to be. Do i need to cover the dirt with 6 mill plastic or is that over kill.

[mrmccowcow]

I believe you don't need to cover with anything since the spray foam will act as the vapour barrier.

[craftsman]

"Covering-it-up" may not be for a vapor barrier but for a fire barrier. Most foam insulations require a fire barrier between you and the foam if sprayed on an inside wall.

[Reignman]

i am also being told that the walltite needs to be covered but because its in a crawl space it doesnt need to be. Do i need to cover the dirt with 6 mill plastic or is that over kill.

I had my crawlspace spray foamed last October. Both GNI (the company that did the job) and the energy auditor informed us that since the crawl space is not considered "living space" then a barrier did not need to be put over the foam.

6 mill plastic is good to help keep moisture from coming up out of the dirt. Do you store anything down there? If so, the plastic would be a good idea. It may be overkill but it just helps things stay neat and tidy plus you then don't have to worry about mold (remember, the spray foam will make your crawlspace virtually airtight so less air movement to help "dry" things out)

[sixer]

I'd recommend polyurethane Polarfoam 7300 over both.

[purpleitis]

I'd recommend polyurethane Polarfoam 7300 over both.

I would have to disagree with you on that one, considering Walltite is the first medium density spray foam to receive the ECO trademark.
Walltite ECO just makes sense and purple it is.