Next message: James H. E. Maugham: "T&T: RE: RE: largest non-nuclear, man-made explosion"
Being a General Contractor, I remember a time in the 70's when polyurethane
foam was hailed as being the answer to all, for leaking commercial buildings
with flat roofs. Once liberally applied around AC units and other things
that went through the roof, the leaks were stopped. I saw roofs that were
literally covered with 1 - 2 feet of foam. If the foam was applied thinly
you could walk on it without compressing and breaking the outer layer.
Unfortunately many foamed roofs were so thick (thinking more was better)
that the poly foam was destroyed by servicemen walking to the equipment.
Then the summer sun (UV) degraded the polyurethane and turned it to dust
after a year or two. Guess what a mess it was to remove and re-roof the
buildings....all of them. Some even tried to re-roof over the foam. Many
commercial building owners that chose the cheap way out to solve their
leaking roof problems paid dearly. However it was waterproof when first
applied........
Bob Clinkenbeard
M/V Valentine
Re-building a Roughwater 41 hull
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering
To Unsubscribe send email to
Include the word Unsubscribe (and nothing else) in the subject or body of the message.
