Hods Wood Glue Types Compared: Which Adhesive for Which Joint
Wood glue is the invisible fastener that holds most furniture and woodworking projects together. A properly glued joint is stronger than the wood around it — the wood breaks before the glue line fails. But different glues have different strengths, working times, moisture resistance, and cleanup properties. Using the wrong glue for the application leads to failed joints, stained finishes, and wasted effort. Here is how to match the adhesive to the joint.
Wood Glue Types Compared
PVA (Polyvinyl Acetate) — The Standard
PVA wood glues are the everyday workshop adhesive. Titebond Original, Titebond II, and Titebond III are the dominant brands, and for good reason — they are strong, affordable, easy to use, and clean up with water while wet.
Titebond Original (Yellow Glue)
Bond strength: 3,750 PSI. Stronger than most wood species. Open time: 5 to 7 minutes (the time you have to align parts before the glue starts setting). Cure time: Clamp for 30 minutes to 1 hour. Full strength in 24 hours. Water resistance: None. Indoor use only. Cost: $8 to $12 per quart.
Use for interior furniture, bookcases, cabinets, edge glue-ups, and any indoor joint that will not see moisture. This is the default glue for most workshop projects. It sands easily, does not clog sandpaper excessively, and produces a nearly invisible glue line on tight joints.
Titebond II (Water-Resistant)
Bond strength: 3,750 PSI. Open time: 5 to 7 minutes. Water resistance: Type II water resistance. Passes the ANSI/HPVA Type II water-resistance standard. Survives occasional moisture but not continuous immersion or outdoor exposure. Cost: $9 to $13 per quart.
Use for kitchen and bathroom projects, cutting boards, serving pieces, and anywhere the joint may see incidental water exposure. This is the most popular woodworking glue because it covers both dry and occasionally wet applications.
Titebond III (Waterproof)
Bond strength: 4,000 PSI. Open time: 8 to 10 minutes. The longer open time is valuable for complex assemblies and glue-ups with multiple joints. Water resistance: Type I waterproof. Survives repeated wetting and drying. Cost: $12 to $16 per quart. FDA approved for indirect food contact. Safe for cutting boards and food-prep surfaces.
Use for outdoor furniture, garden beds, exterior trim, and any joint exposed to weather. Also good for complex assemblies where the extra open time prevents panicked scrambling during glue-up.
Note on PVA and finish: PVA glue squeeze-out blocks stain penetration. Any spot where glue touches the wood surface will show as a light patch under stain. Clean up squeeze-out immediately with a damp cloth, or wait until it is rubbery (20 to 30 minutes) and peel it off with a chisel. Never smear wet glue across the surface with a rag — this spreads an invisible film that shows up under stain.
Polyurethane Glue (Gorilla Glue)
Bond strength: 3,500 to 4,000 PSI. Open time: 10 to 15 minutes. Cure time: 1 to 2 hours clamp time. Full cure in 24 hours. Water resistance: Waterproof. Foaming: Expands 3 to 4 times its volume during cure. The foam fills gaps but has no structural strength in the expanded foam. Cost: $8 to $15 per bottle.
Polyurethane glue bonds wood to wood, wood to metal, wood to plastic, and other dissimilar materials. It works on oily woods (teak, ipe, rosewood) that PVA struggles with because polyurethane cures with moisture rather than evaporation.
Downsides: The expanding foam is messy. It stains skin brown and does not wash off — it must wear off over several days. The cured foam squeeze-out is difficult to remove and leaves rough, unsightly globs. Cured polyurethane glue does not sand cleanly.
Use polyurethane glue for: bonding dissimilar materials, oily tropical woods, and gap-filling applications where the joint is not perfectly tight. It is not the best choice for standard woodworking joints where PVA performs better and cleans up easier.
Epoxy
Bond strength: 2,000 to 4,500 PSI depending on formulation. Open time: 5 minutes (quick-set) to 60+ minutes (slow-set). Cure time: Varies by formulation. Full cure in 24 to 72 hours. Water resistance: Waterproof and chemical-resistant. Gap filling: Epoxy fills gaps and maintains full strength. PVA requires tight joints for maximum strength. Cost: $10 to $25 per mixed batch.
Epoxy is a two-part adhesive (resin + hardener) that cures through chemical reaction rather than evaporation. It bonds to almost any material and fills gaps structurally — unlike PVA, which weakens in thick glue lines.
Uses in the workshop:
- Repairing cracked or damaged wood (fills voids)
- Bonding dissimilar materials (wood to metal, wood to stone)
- Structural repairs on furniture and tool handles
- Building up damaged areas on tool bodies and jigs
- River table pours and decorative fills (casting epoxy)
West System and TotalBoat are premium marine-grade epoxies. Gorilla Epoxy and Loctite are adequate for home workshop use at lower cost.
Epoxy is not the default wood-to-wood adhesive because PVA is cheaper, easier, and stronger on tight wood joints. Use epoxy when PVA cannot do the job: gap filling, dissimilar materials, structural repair, and waterproof applications.
CA Glue (Super Glue / Cyanoacrylate)
Bond strength: 2,000 to 3,000 PSI. Cure time: 5 to 30 seconds (thin), 1 to 2 minutes (medium and thick). Water resistance: Moderate. Cost: $5 to $15 per bottle.
CA glue bonds instantly with no clamping. Available in thin (penetrates cracks and tight joints), medium (general purpose), and thick (gap filling) viscosities.
Workshop uses:
- Instant-bond pen turning and small part assembly
- Filling small cracks and checks in wood (thin CA wicked into cracks with accelerator)
- Temporary hold for templates, jigs, and workholding
- Stabilizing punky or soft wood (thin CA soaks into soft grain and hardens it)
- Quick repairs on hand tool handles
CA glue is not for structural joints or large assemblies. It is brittle and does not handle impact or flex well. But as a utility adhesive for quick fixes and specialty applications, a bottle of thin and a bottle of medium CA belong in every shop.
Quick Reference
| Glue | Best For | Open Time | Waterproof | Gap Filling |
|---|---|---|---|---|
| Titebond Original | Indoor furniture | 5-7 min | No | No |
| Titebond II | Kitchen, bath | 5-7 min | Water-resistant | No |
| Titebond III | Outdoor, complex assembly | 8-10 min | Yes | No |
| Polyurethane | Oily wood, mixed materials | 10-15 min | Yes | Partial (foam) |
| Epoxy | Repair, gap fill, mixed materials | 5-60 min | Yes | Yes |
| CA Glue | Quick fix, small parts | Seconds | Moderate | Thick only |
Bottom Line
Keep Titebond II or III as your primary glue for 90 percent of woodworking joints. Add a bottle of 5-minute epoxy for repairs and gap-filling. Keep thin and medium CA glue for instant fixes and crack filling. That three-glue kit covers every adhesive need in a home workshop. Match the glue to the joint: PVA for tight wood-to-wood, epoxy for gaps and dissimilar materials, CA for speed.