How to Choose Glue for Exterior Work

Use polyurethane glue for gluing exterior wood.

Picking the best glue for a DIY project can be overwhelming since there are dozens of choices. In this story, we answer the question of what type of glue to use for exterior wood.

By the DIY experts of The Family Handyman Magazine

Picking the best exterior glue

An exterior-grade yellow woodworking glue may work fine for outdoor projects, such as repairing a deck railing post that has a piece broken off, especially if it’s protected by a coat of paint. But it’s not my first choice. I would use a polyurethane-based glue. It’s fully waterproof and bonds wood and other materials well. It’s not gap-filling, so be sure to get a good fit and clamp it.

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Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

  • Clamps

Polyurethane glue