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Polyurethane vs FRP
2

thread338-406917

Polyurethane vs FRP

Polyurethane vs FRP

(OP)
Dear mates,
My contractor is offering me Polyurethane instead of FRP to coat a Crude Oil TK bottom, cost is half.
Any input will be apreciated.

RE: Polyurethane vs FRP

What advantages (besides price) is he touting?
IF you need strength then FRP has big advantages.
Either way the adhesion is the primary issue, make sure that you know what combination of surface prep and base coats are being used to assure proper adhesion.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: Polyurethane vs FRP

The coatings aren't even close to being equivalent. Which one do you need? I have no idea, but I'm pretty sure there is some API and/or NACE guidance available on the topic if you do some research.

RE: Polyurethane vs FRP

Dear Joss10,

FRP is indeed a heavy duty coating. High build PU is very much abrasion resistant too.

So I would suggest if your Crude oil property is good for PU, then go for it!!

CocoE

RE: Polyurethane vs FRP

Who's on the hook if the poly doesn't work?

RE: Polyurethane vs FRP

I would not use a polyurethane in this situation. I would recommend a Cyclo-Aliphatic Epoxy. They're designed for immersion in these situations. Polyurethanes are generally used for UV protection, gloss retention, etc.

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