Material guide
Gluing Oak
Dense hardwood used for furniture, flooring, worktops and joinery.
Also called european oak, hardwood.
How Oak behaves when you bond it
Dense and open-grained, so it glues well but absorbs less than softwood. Oak's tannins react with iron and with some adhesives, staining the joint dark, and it moves noticeably with humidity.
Oak is a dense, porous hardwood with open vessels and tannin-rich extractives. Clean long-grain surfaces generally bond well, but end grain can consume adhesive and the wood moves across the grain as humidity changes, placing peel stress at rigid joint edges.
Material properties
- Surface energy
- High, which helps adhesion
- Porosity
- Porous
- Rigidity
- Rigid
- Maximum service temperature
- 100C
- Normally needs abrading
- Yes
- Normally needs a primer
- No
- Recommended abrasive grit
- 80 grit (WEST SYSTEM epoxy preparation for hardwoods.) Manufacturer verified
Surface preparation
Bring the timber to service moisture content, machine or sand to fresh sound wood, and remove dust by vacuum. WEST SYSTEM specifies 80-grit sanding for hardwoods in its epoxy process. Avoid iron-contaminated abrasives that can stain oak and design the joint to accommodate seasonal movement.
Which adhesives work on Oak
Excellent
PVA wood glue
PVA wood glue is rated excellent for this material as an application-level assessment, not as a blanket manufacturer claim. The prepared surface must be sound and consistently keyed where the finish permits. Suitability still depends on the other substrate, joint design and service environment.
Abrade the surface first.
Good
Polyurethane wood glue
Polyurethane wood glue is rated good for this material as an application-level assessment, not as a blanket manufacturer claim. The prepared surface must be sound and consistently keyed where the finish permits. Suitability still depends on the other substrate, joint design and service environment.
Abrade the surface first.
Good
Two-part epoxy
Two-part epoxy is rated good for this material as an application-level assessment, not as a blanket manufacturer claim. The prepared surface must be sound and consistently keyed where the finish permits. Suitability still depends on the other substrate, joint design and service environment.
Abrade the surface first.
Bonding Oak to something else
Last reviewed 8 October 2026.