Originally Posted by islandflyer
Can you expand? I asked for hypalon and they quoted PU and NH tubes, which I assumed were PVC and Hypalon?
You'd need to check exactly with them but I think they offer:
PVC (confusingly I think they use(d) a brand called hypatex)
Hypalon (I think that will be the NH)
Polyurethane (this is not the same as pvc)
They may even offer all three in multiple weights too!
The hypalon tubes are standard glued construction. The pu and pvc tubes will be welded. On here you won't find too much info on PU tubes. Tornado, Valliant and XS all offer PU tubes (as the "normal" option in most cases). People who have PU tubes generally seem very happy, welded PU tubes hold air so well you can go years between topping up the air. US military tests reported PU was harder wearing (to abrasion) than hypalon - that may or may not be relevant to your use. It does seem to have acceptance for commercial type use in the USA.
PU is harder to patch (but still possible), but you have to balance that against a material which is welded and so less likely to have a manufacturing issue.
I have no idea about the relative uv resistance of PU, but heat and glued seams don't play well together so you might see a benefit.
The old guard here like their hypalon tubes, of course most have never owned anything else and half think that PU and PVC are the same thing or that PU is a new and unproven technology. bigmuz and SeaSkills both owned valiant PU boats and spoke positively about them.
I'm not sure once you've factored in the hull cost, electronics, seating, engines and shipping that the tube material will make you a significant cost difference?