What is the best wood glue?
Dozens of glues claim to work well on wood and a variety of other materials. But regular wood glue is the best wood glue for raw wood-to-wood joinery. Most wood glues are a type of polyvinyl acetate (PVA wood glue). Also sometimes called carpenter’s glue, wood glue is formulated to penetrate wood fibres, making glue joints that are stronger than the wood itself.
Yellow exterior glue (sometimes grey)
Yellow exterior glue is used for outdoor projects but not continuous submersion. It will be labelled water resistant or exterior.
White and yellow interior glue
White and yellow interior glue is the most common, workhorse wood glue, but it’s not for outdoor use.
Liquid hide glue
Use it for furniture repair; very long open time for assembly – up to 30 minutes. Requires a long curing time.
Use it when you need a completely waterproof glue. Also glues metal and some plastics. Long open time for assembly – up to 15 minutes; curing time: up to five hours.
Use it when you need to fill gaps and for great strength. Comes in two parts that must be mixed just before using. Epoxy will glue most materials, and it’s waterproof. Won’t wash off your skin – or anything else.
How long does wood glue last?
Wood glue can last for years. But you may have heard that PVA wood glue goes bad after freezing or sitting around for a long time. The truth is that it might still be OK. Try stirring it with a stick to mix all the glue particles (don’t just shake it). If it’s a little thick, add some water – up to 5 percent. If glue flows freely from the bottle and feels slippery between your fingers – not stringy or clumpy – it’s probably OK to use. But if in doubt, throw it out. It’s not worth taking the chance.
How long does wood glue take to dry?
Wood glue brands recommend clamping an unstressed joint for 30 minutes to an hour. Stressed joints need to be clamped for 24 hours and it’s recommended that the joint not be stressed for at least 24 hours. For polyurethane glue, it is recommended that you clamp for at least 45 minutes.