Polyester Laminating Resin Recoat Window

CarTuner

Seaman Apprentice
Joined
Sep 1, 2008
Messages
36
I'm building a floor hatch using polyester laminating resin, but don't have enough time to do the entire layup in one session. What's the maximum time I can wait between layers? Would one week be too much? I'm trying to avoid having to sand the surface between the layers. If it matters, the part will be made and stored in a warehouse that reaches 95 degreesF during the day.
 

Redtruck12

Petty Officer 1st Class
Joined
Jan 25, 2018
Messages
344
Pretty sure you are okay without sanding, a good wash with Acetone should be all you need to do.
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,924
The biggest factor to consider is contaminants. If you cover the surface and don't allow dust etc...to get on the surface and then wash down with acetone, it'll be fine
 

BillP

Captain
Joined
Aug 10, 2002
Messages
3,290
Laminating resin can stay tacky for months. The whole reason for the tack is that NO prep is needed. Dust collects on the tack and wiping with acetone is counter productive in that regard. IF you feel inclined to wipe with anything, styrene will give much better adhesion due to chemistry.
 
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