Removing spilt varnish from GRP deck

[Leighb]

A friend did some varnish work for us in the spring, and unfortunately he was not very tidy and there are quite a lot of splashes and drips. It would be very laborious to scrape them all off, and where it is a bit smeared perhaps impossible.

I had hoped to be able to use a paint stripper product, Owatrol Safestrip, but discover that the varnish was a polyurethane type and therefore impervious to stripper.

Does anyone have any other suggestions, or is it down to scraping carefully?

TIA

 

[blan321]

I have successfully used Diall and similar varnish stripper from BnQ or Homebase, it contains benzoyl alcohol, looks like white emulsion. ,maker says leave 1 hour, 2 or 3 more like it. It doesn't say if it's GRP compatible tho, just looked at container. It seems quite benign compared to nitromors. Maybe test a bit inconspicuous....?

 

[William_H]

Polyurethane is the name usually used for 2 pack paint that hardens like a resin and is only removable by mechanical means. However urethane is also used as a filler for ordinary 1 pack paint or varnish which may be softened by paint strippers. I would try acetone on it first to see if that softens the varnish. If it is 2 pack be prepared to put up with mess or paint over it with a 2 pack or other deck paint. olewill

 

[Leighb]

Definitely not two pack. It is International Compass which is described as Polyurethane.
Thanks for suggestions.

 

[cueball]

Not sure if it will work on spilt varnish but Y10 seems to work best for removing stains on GRP, I have tried many others but come back to the Y10. paint it on with a brush wait for 10 minutes and clean off, make sure when using the temperature is above 10 degrees.

 

[UK-WOOZY]

ive found the purple paint brush cleaner removes varnish and sikaflex and sun dried duct tape