PVA Glues – Storage, Safe Handling and Proper Disposal

Because PVAs are so familiar, it’s easy to think of them as not having any special requirements. Here are some tips for storing your glue to maximize its shelf life, how to determine if it is usable and how to safely dispose of it.

What’s the best way to store PVA glues?

PVA’s should be stored at room temperature in a dry place out of direct sunlight. If the glue has sat unused for a couple of months, give it a stir to re-emulsify the components.

What is the shelf life for PVA glues?

This varies with the formulation and storage conditions. One year is common, though some high-performance versions have a shorter shelf life (often around 9 months).

How do I know if my glue has gone bad?

It will separate and the solids will coagulate, and you will not be able to stir it back into a homogenous state. Best to discard it; fresh glue is inexpensive insurance.

Are PVA glues freeze/thaw stable?

Though some types can withstand a small number of freeze/thaw cycles, it’s best to not expose PVAs to freezing temperatures. PVA glue ruined by freezing has a thick, semi-solid texture at room temperature.

How do I dispose of glue that’s no longer usable?

The safest method is to pour the glue out onto a surface or into wood shavings and let it cure to a solid.

Are there any safety precautions I should take when working with PVAs?

PVA adhesives are very safe to work with. Any small amount that gets on your skin can simply be peeled off when dry, but it’s best to limit exposure, as they are mildly acidic and can cause irritation.