UV Smooth Prime Poly-Fiber - SPU - Quart

Poly-Fiber UV Smooth Prime is a cross-linkable waterborne urethane. It is used on composite aircraft to protect the structural epoxy of your composite surface from harmful UV light. It also provides an easy-to-apply, sandable coating and fills pinholes in your composite surfaces. When used in conjunction with Superfil, these products give a marvelously smooth platform for your final 2-part epoxy and top coats. The result~ a beautiful paint job!