J-B Weld Quart – Fiberglass Short-Strained Filler

Price: $23.98
(as of Aug 27, 2025 23:00:16 UTC – Details)

J-B Weld Fiberglass Putty is a fiberglass-reinforced, two-component putty system that provides waterproof, durable repairs to cracks up to ½ inch on fiberglass, composites, metal, and concrete.
J-B Weld Fiberglass Putty is a fiberglass-reinforced, two-component putty system that provides waterproof, durable repairs to cracks up to ½ inch on fiberglass, composites, metal, and concrete.
Provides short-strand reinforced repairs on fiberglass, composites, metal & concrete
2x the strength of body filler
Dries in 30 minutes
Easy to sand, paintable & waterproof