Quote:
Originally Posted by iamgeo
In other words, you know nothing about it.
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Yes, I have never used this product but I have used Tiger Foam, does that count? I am an Engineer and I love numbers, so lets talk numbers.
Per this website:
Thermal Conductivity cork is twice as thermally conductive as Polystyrene (Foam Boards) and Polyurethane (Spray Foams), meaning it is half as good as an insulation.
The way to deal with a lower performing insulation material is to simply install more (e.g. fiberglass batting, and blow-in insulation materials). According to this video (at around 2:20):
they apply the cork at 1/8" thick. 1/8" of insulation isn't much regardless of what material you use. I suppose it is better than bare metal, concrete, or brick.*
What I found really striking is the actual application thickness of 1/8" doesn't even come close to the test sample's thickness they advertise as "proof" of their product's performance (page 2):
https://www.lonestarcorkshield.com/w.../01/test-4.pdf
In my line of work, "we test like we operate and operate like we test," and to compare the performance of test samples nearly 4 times as thick as what would be applied out in the field is just plain stupid.
Considering all the other spray foams offer similar capabilities (acoustic, thermal, fire, moisture, mildew, etc.) I don't see a lot of benefit of this material over other products.
*The advertisement of this being sprayed over the existing structure is interesting. I will admit that has some merit compared to other spray foam products. What I am skeptical about is the cost of this product versus properly insulating with more effective products. IMHO spraying the outside of the structure seems like treating a symptom not fixing the cause.