Storing decoupage glue, and knowing when a bottle is finished

A bottle of decoupage glue and sealer keeps for years if it never freezes. Here is what we do with ours between projects.

Keeping it alive

Cap it properly, stand it upright and keep it somewhere that does not freeze. Those three things cover almost everything. A bottle stored on its side will weep around the cap thread and crust shut; one left open skins over from the top down.

Wipe the neck before you close it. Dried medium on the thread is the usual reason a lid stops sealing, and an unsealed lid is the usual reason a jar dies early.

Freezing is the one that kills it

A water-based acrylic that freezes and thaws separates, and it does not come back together properly no matter how long you stir. A garage or an unheated shed over winter is the most common way people lose a full bottle. Bring it inside.

When it has gone

Stringy, lumpy, separated into layers that will not stir back, or a sour smell — those mean it is done. A thickened but otherwise clean jar can sometimes be thinned with a very small amount of water, but a separated one cannot be saved and will dry patchy if you try. Start a fresh bottle; it is cheaper than redoing the piece.

Decoupage glue and sealer at a glance

Store it

• capped tight
• upright
• indoors
• above freezing

Good shelf

• cupboard
• craft drawer
• warm garage

Bad shelf

• cold garage
• car boot
• windowsill
• shed

Still fine

• slight thickening
• thin skin
• faint smell

Thin it with

• a little water
• stirring
• nothing else

Bin it

• sour smell
• lumps
• separated
• frozen once

Shelf life

• years sealed
• months opened

Tidy cap

• wipe rim
• warm cloth
• no solvent

A Mod Podge decoupage glue is a water-based sealant, which is what makes it easy to work with and also what makes freezing fatal. The water carries the solids; freeze it and the two separate for good. Everything else — thickening, a skin under the cap, a bottle that has gone quiet for a year — is usually recoverable.

Our own bench has bottles from across the variety of the line that are years old and still create a smooth finish that dries clear. Capped, upright, indoors. That is the whole trick, and it is handy to know because a crafter who stores well buys the big size once instead of the small size five times and still gets a durable result.