Adhesives & Sealants
Glue
Gorilla
$8-$25/bottle

Polyurethane Glue for Waterproof Multi-Material Bonding

Polyurethane glue is a moisture-activated expanding adhesive that bonds virtually any material including wood stone metal ceramic foam and plastic. Its 100% waterproof bond is ideal for outdoor and marine applications. Expanding foam fills small gaps in imperfect joints.

Key Features

  • 100% waterproof bond
  • Bonds multiple materials
  • Expanding gap-filling formula
  • Moisture activated curing
  • Sandable and paintable
  • Indoor and outdoor use

Specifications

Open time: 10-15 min | Clamp: 1-2 hrs | Full cure: 24 hrs | Expansion: 3-4x volume | Temp: above 40F | Cleanup: scrape cured or acetone wet

Best For

Outdoor furniture mixed material assemblies gap-filling applications marine woodworking and projects requiring waterproof bonding.

Compatible Materials

Wood
Stone
Metal
Ceramic
Foam
Fiberglass

Pros & Cons

Pros

  • ✓ 100% waterproof
  • ✓ Bonds dissimilar materials
  • ✓ Gap-filling expansion
  • ✓ Works in damp conditions
  • ✓ Very strong on porous materials

Cons

  • ✗ Foaming can be messy
  • ✗ Dark cured color
  • ✗ Cannot sand flush easily
  • ✗ Short shelf life once opened
  • ✗ Stains skin permanently

Installation Tips

Lightly dampen one surface before applying glue to other. Apply sparingly as glue expands 3-4x. Clamp firmly to control expansion. Use wax paper under joints. Wear gloves as it permanently stains skin. Cut excess after partial cure with sharp chisel.

Frequently Asked Questions