| has anyone else used "minimal expansion" foam, [message #34847] |
Tue, 22 January 2002 14:50  |
Sam P.
Messages: 307
Registered: May 2009
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Grand Master |
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like the dow brand? The kind I have used "dried" to a hard foam rubber pillow texture, even after weeks it was still "squeezably soft". I feel it really deadened the void I was filling, then the expense of filling the Pi cavities was mentioned...if less expansion, more cans of goo, but less pressure to bulge those panels. Sam
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| Expansion foam products [message #34849 is a reply to message #34847] |
Wed, 23 January 2002 05:18  |
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Wayne Parham
Messages: 18845
Registered: January 2001
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Illuminati (33rd Degree) |
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That's the same stuff I've used. It's avaliable at local builder and supply stores, and I recommend 2 lb per cubic foot injectable material. A pourable expansion foam is also mentioned in the post called "ten Pi injection foam - VERY IMPORTANT", and it is more like what is usually used as a protective foam in shipping cartons, so is just as effective. You are right that the foam cures to form a rubber-like mass that is compressable. However, do not be fooled by its "low expansion foam" product description. This stuff will still split even very solid panels if introduced into a small cavity where expansion exceeds volume.
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