By Don Casey
Revised by BoatUS editors in April 2012
Photo by David Schuler
So if you use a stripper on fiberglass, don't make the mistake of thinking that leaving it on longer will be better. Chemical strippers can be used safely on wood surfaces and are very good at removing varnish and other wood coatings. However, avoid strippers containing methylene chloride, an extremely hazardous chemical. There are health-friendlier alternatives.