Buy Titebond III for anything that lives outside. It is the only glue on this page whose manufacturer publishes an ANSI/HPVA Type I water-resistance rating, and the longer 8–10 minute open assembly time is what gets a garden bench together before the glue skins. That is the answer for a planter, a bench, an Adirondack chair, a gate or a potting table.
Titebond IIis the pick if the piece is covered — a porch swing, a shed bench, anything under a roof — and you want to spend less. Gorilla Wood Glue is the pick when you want one bottle for everything and the project is small. The real point of this page, though, is that on outdoor furniture the glue is rarely what fails. Design and water management are. We will get to that.
Type I and Type II: the only rating that matters
ANSI/HPVA is the American National Standards Institute standard the hardwood plywood industry uses for bond durability, and glue manufacturers publish against it. In plain terms:
- Type Iis the more demanding of the two and is what manufacturers point at for exterior use. Franklin International publishes that Titebond III "passes ANSI/HPVA Type I water-resistance specification".
- Type IIis water-resistant rather than waterproof. Franklin publishes Titebond II as the "first one-part wood glue to pass ANSI Type II water-resistance" and describes it as designed for exterior use.
Both statements are the manufacturer's own and are linked in Sources. Neither is a claim we tested; we do not have a lab, and our methodology pagesays so. What the ratings give you is a published, comparable basis for a decision instead of the word "waterproof" on a label.
Open time is the outdoor spec nobody thinks about
Outdoor furniture tends to be assembled in big, awkward sub-assemblies — a chair side with four joints, a bench frame with six — often outdoors, in sun and wind, which is exactly the condition that makes glue skin fastest. Franklin publishes 8–10 minutes of open assembly time for Titebond III at 70°F and 50% relative humidity, against 3–5 minutes for Titebond II.
That difference is the one you feel. Five minutes is enough for two joints and not enough for six. If a joint goes together after the glue has skinned, the bond is compromised whatever the bottle is rated for, and nothing about that failure looks like a glue problem later.
Temperature is the other one
Glue is applied outdoors more often than indoors, which puts the published minimum application temperature in play. Franklin lists Titebond III as applicable above 47°F, with the limitations section giving 45°F for glue, air and materials; Titebond II is listed above 55°F. On a spring morning, that ten-degree difference decides whether you can glue up today or have to wait.
What each glue on this page is for
- Uncovered outdoor furniture: Titebond III. Published Type I, longest open time here, lowest application temperature here. Dries to a dark glue line, which hides on walnut and shows on maple.
- Covered outdoor furniture: Titebond II. Published Type II, cream colour, cheaper, and the one most shops already have on the shelf.
- Small outdoor projects and one-bottle shops:Gorilla Wood Glue, a water-resistant PVA whose listing publishes a 20–30 minute clamp time and a natural dried colour.
- Work that will be stained:Elmer's Carpenter's Wood Glue Max, which is wood-fibre filled and listed as stainable — the squeeze-out problem solved at the glue rather than at the sander.
Prices below come from our live price feed and carry the date they were pulled.
The four side by side
Published figures only. Where a manufacturer does not publish a number, the cell says so rather than guessing at one.
| Glue | Published water rating | Open assembly time | Application temperature |
|---|
| Titebond III Ultimate (16 oz) | ANSI/HPVA Type I | 8–10 min (70°F / 50% RH) | Above 47°F |
| Titebond II Premium (16 oz) | ANSI Type II | 3–5 min (70°F / 50% RH) | Above 55°F |
| Gorilla Wood Glue (18 oz) | Water-resistant PVA (listing) | Not published | Not published |
| Elmer's Wood Glue Max (16 oz) | Interior and exterior (listing) | Not published | Not published |
The glue is not usually what fails outdoors
Outdoor joints come apart for reasons that sit upstream of the bottle, and buying the best glue on the shelf fixes none of them:
- Movement.Wood outdoors swings through a far wider moisture range than wood indoors, and it moves across the grain while a glue line does not. A wide panel glued rigidly into a frame will crack itself apart or tear the joint — the glue was never the problem.
- Standing water. Any horizontal surface that holds a puddle, and any end-grain foot standing in one, will soak. End grain wicks water the way a straw does.
- Unprotected end grain. The ends of rails and legs absorb many times what a face does. Seal them, chamfer them so water runs off, and keep them off the ground.
Design for those three and a Type II glue will outlive the finish. Ignore them and Type I buys you a season.
Joint choice does more than glue choice
A glue line is strongest long-grain to long-grain and weakest end-grain to end-grain, which is why outdoor furniture is traditionally built with joints that put long grain against long grain and add a mechanical interlock: mortise and tenon, bridle joints, through-wedged tenons. A pocket screw holds while the glue cures and keeps holding if the glue lets go, which is why it is so common on garden benches.
If you are choosing a joint for an outdoor piece, our wood joint types explained covers the trade-offs and tools needed for mortise and tenon joints covers what it takes to cut the strongest one.
Clamp time, cure time and rain
Titebond's general guidance is to clamp an unstressed joint for thirty minutes to an hour, to clamp a stressed joint for 24 hours, and not to stress a new joint for at least 24 hours. For outdoor work, add one rule: the piece does not go out in the weather until it is fully cured and finished. A joint that gets rained on at the six-hour mark is a joint that never reached full strength.
We go through the whole timing question — open time, clamp time, cure time and the difference between them — on how long to clamp wood glue.
Where these numbers come from
The water-resistance ratings, open assembly times, application temperatures and clamping guidance for Titebond II and III are Franklin International's own published technical data, linked in Sources. The Gorilla and Elmer's figures are from their live retail listings, also linked, and where those listings do not publish a number the table says "not published" rather than filling the gap. We have not tested bond strength or water resistance ourselves.
