: Companies like Distribution International and Spi-Co specialize in commercial-grade insulation and are more likely to have access to polyisocyanurate (polyiso) boards like Tuff-R. Recommended Replacements
While (now often labeled as DuPont Tuff-R ) was a staple for high-performance insulation, it is increasingly difficult to find as the product line has been largely discontinued . Most national retailers no longer carry active stock, though it sometimes appears as "old stock" at specific regional outlets. where to buy dow super tuff r
: Some regional listings for Dow Super Tuff-R still exist on their site, typically for the 0.5-inch or 0.75-inch variants, though availability is highly dependent on your local zip code. : Some regional listings for Dow Super Tuff-R
: Historically the primary retailer for Super Tuff-R. While currently listed as "Out of Stock" or "Unavailable" in most regions online, local stores may occasionally have remaining inventory or can check if a special order is possible through their vendor. : This regional supplier in Massachusetts has recently
: This regional supplier in Massachusetts has recently listed DuPont Tuff-R Foil Faced Se Polyisocyanurate Insulation (the direct successor) in various thicknesses.
If you are looking to purchase this or its modern equivalents, here is where to look and what to use instead: Where to Check for Remaining Stock
Since Super Tuff-R is becoming rare, DuPont and professional contractors recommend these alternatives: DuPont™ Tuff-R™ Polyisocyanurate Insulation