Icynene: first good look at it.

[Kenton H. Shepard, CMI]

From a draw inspection today, my first chance to get a good look at Icynene.

All walls and underside of roof sprayed with this stuff. The home felt like a recording studio... very quiet, very tight. It's R-value is 3.7 per inch, not way greater than some other good inulations, but I was impressed. I couldn't tell the average thickness at the lid, but in places it appeared to be close to 24" thick. Walls and roof of a home, approx. 3000 ft. sq cost approx. $6,000

[Roy D. Cooke, Sr]

Originally Posted by kshepard

From a draw inspection today, my first chance to get a good look at Icynene.

All walls and underside of roof sprayed with this stuff. The home felt like a recording studio... very quiet, very tight. It's R-value is 3.7 per inch, not way greater than some other good inulations, but I was impressed. I couldn't tell the average thickness at the lid, but in places it appeared to be close to 24" thick. Walls and roof of a home, approx. 3000 ft. sq cost approx. $6,000

I have never heard any bad reports on it . Roy

[Mark H. Roe]

I hope that they have everything run in conduit

[Kenton H. Shepard, CMI]

Nope. Stapled Romex. Why?

[Mario A. Kyriacou, CHI]

Originally Posted by rcooke

I have never heard any bad reports on it . Roy

Roy and Kenton

I like the stuff but who knows what they will say about this product 5 or so years down the road. I hope nothing negative.

It's great for the garage with a bedroom above.

[Kenton H. Shepard, CMI]

Oxidizing or long-term chemical reaction causing deterioration... I don't know what the testing procedure is for this kind of product.

[Michael R. Boyett]

http://www.icynene.com/InsulationSystem.aspx

[Mark H. Roe]

When I was working for the state, We had this type of insulation used in one of our barns. We had a short in one of the junction boxes that was under all of this. We ended up having dig out the box, and then pull new wiring over the insulation to a new box. It would have looked a lot nicer and been a lot easier to fix if we would have had it in conduit.

[Kenton H. Shepard, CMI]

Originally Posted by mroe

When I was working for the state, We had this type of insulation used in one of our barns. We had a short in one of the junction boxes that was under all of this. We ended up having dig out the box, and then pull new wiring over the insulation to a new box. It would have looked a lot nicer and been a lot easier to fix if we would have had it in conduit.

Mark, if this were your house and you had to pay for the extra conduit and the time it took for the electricians to run it, then pull the wire, would you still do it?

[lcapaul]

Originally Posted by rcooke

I have never heard any bad reports on it . Roy

the only thing that I have read that may prove to be negative is excessive heat build up and damgae to the roof sheathing by not having air circulation/cooling on the bottom side of the sheething, its possible in "hot" areas that this heat could severely damage the sheathing. While doing renovations in Las Vegas I discovered that the sheething under tar/gravel roofs was often delaminated due to excessive heat that seemed to have destroyed the glue holding the plywood together, I could practically remove the sheathing one ply at a time.

I had 4" of Icynene sprayed inside the hull and deck of my sailboat, nice and quiet and warm and toasty for Winter Sailing on Puget Sound and for early voyages up the Inside Passage.

[rwand1]

My open foundation floor has been sprayed with foam. It was installed about 10 years ago. I wouldn't do it any other way if I had to do it again. I think at the time it was R7 per inch.

I believe that in some jurisdiction they are require a vapour barrier, and that a fire resistant overspray is not required in some jurisdictions. Has anyone heard of this?

[Blaine Wiley]

Builders here in hot, sunny FL started using it with a fully enclosed attic (no ventilation) a few years ago. I have done several of them, and at least so far have seen no issues with wear on the shingles, soft spots in the sheating, or anything else.

Time will tell.

[phinsperger]

Originally Posted by rwand1

I believe that in some jurisdiction they are require a vapor barrier, and that a fire resistant overspray is not required in some jurisdictions. Has anyone heard of this?

Icynene is an open celled foam as opposed to poly urethane which is a closed cell foam. An open celled foam will allow moisture to pass so I can see a vapor barrier requirement when am open celled foam such as Icynene is used.

[Mark H. Roe]

Ken,
I was just stating my opinion about my experience. It does has it good and bad sides. I for one probably would not use it for a number of reasons. But each to their own.

[Kenton H. Shepard, CMI]

Originally Posted by lcapaul

I had 4" of Icynene sprayed inside the hull and deck of my sailboat, nice and quiet and warm and toasty for Winter Sailing on Puget Sound and for early voyages up the Inside Passage.

I'd be worried about how will it react to spilled gas or deisel fuel or bilge water or the various other things that wind up in the bilge and stay there for a while. Do you know anyone else who's used it in a boat?