English to Italian Tech/Engineering Ships, Sailing, Maritime vetroresina

Costruzione e riparazione di barche in vetroresina.
Si distingue il gel coat dal flow-coat (o flow coat).
Two layers of gel coat are usually painted onto the inside of a prewaxed mould and the reinforcement material is then laid up behind it. Flow-coat is simply painted on as a thick layer of resin. Both are activated in the same way as ordinary resin except a higher percentage (usually 2 per cent) of catalyst is used...
... Flow coat is resin mixed with pigment, styrene and wax. It behaves like thick paint, and sets into a hard, wipe-down finish.
Sono tentata di tradurre 'gelcoat di finitura' (gelcoat paraffinato contenente stirene mi pare troppo lungo), cosa ne pensate? esiste un termine italiano più esatto?
Grazie,
Anna