Can You Put Exterior Polyurethane Over Interior Polyurethane?
Can You Put Exterior Polyurethane Over Interior Polyurethane? Can You Use Polyurethane Inside or Outside? Most exterior polys can be used indoors, but interior polys should never be used outdoors; they lack the additives that protect exterior finishes from UV rays. Is spar urethane the same as polyurethane? Keep in mind that spar urethane does