---------------------------------------------------------------------------------- Thanks Dave,
I compared properties of the two and found : Both are made by "Dow" and are suppose to be unaffected by ethanol laden fuels. "Tuff-R" has a much higher flexural strength & will absorb much less moisture. There's a locale supplier that carries up to 2" thickness and the price is right! The possible draw back for Tuff-R": an operation temperature range of -50 to +190 F. and having to remove facing materials from each sheet. The plus for "Trymer 2000" is it's operation temperature range of -297 to +300 F, but I don't remember seeing that product name in my travels so far. It seems Urethane Foam has an operation temperature range of 65 to +200 F. I guess my next question is, "What do the high priced urethane foams have that 'Tuff-R' doesn't ? " ------------------------------------------------------------------------------- Subject: Re: KR> experimenter Polyisocyanurate Foam You should also look for Trymer 2000. I found a supplier nearby a few years back, but they don't carry it anymore. Dave Mullins Nashua, NH --------------------------------------------------------------------------------- Ronald E. Haskell wrote: > Is anyone using Polyisocyanurate Foam, (e.g. Tuff-R) in their > construction? > > The last mention of it on the search engine was by Dean Cooper, Sept 2004 > > Ron Haskell, Barrington, NH > > rehask...@metrocast.net >
