How long does unopened emulsion last

[b21playa]

Hi all

I have some 10L tube of white contract paint from around 2017 which are unopened. Will these still be ok to use?

Thinking of using only to do a mist coat on fresh plaster, but if they are going to cause potential issues, I’d rather just bin them all

Thanks

 

[blup]

I've got tins that are 20 years old that have been opened and used to touch up, it depends on the quality of the paint and storage conditions.

 

[b21playa]

I've got tins that are 20 years old that have been opened and used to touch up, it depends on the quality of the paint and storage conditions.

They are crown/leyland contract white tubs. Been stored in a cool garage

 

[blup]

I would give tnem a good stir and unless they are obviously separating, apply on a section of wall.

 

[b21playa]

I would give tnem a good stir and unless they are obviously separating, apply on a section of wall.

Thanks, will try it out

 

[JohnD]

Metal tins are likely to have rusted and stained the paint. Unopened plastic tubs last well. I'd get a paint mixing wand with a plastic spinner that you can put in an electric drill, to mix it thoroughly.

Let it rest overnight for air bubbles to rise out, and manually stir again with a plastic spatula before use. A spatula can scrape the bottom of the tub, and plastic will not scratch.

 

[b21playa]

Metal tins are likely to have rusted and stained the paint. Unopened plastic tubs last well. I'd get a paint mixing wand with a plastic spinner that you can put in an electric drill, to mix it thoroughly.

Let it rest overnight for air bubbles to rise out, and manually stir again with a plastic spatula before use. A spatula can scrape the bottom of the tub, and plastic will not scratch.

Thanks. I will dig out my mixing attachment first the drill and try it out. As I said I only want to use in mist coat, i’ll get some better paint for top coats

 

[Dave B1]

They are crown/leyland contract white tubs. Been stored in a cool garage

Possibly ok as long as they haven't got frosted/frozen over winters in the garage.

 

[Harry Bloomfield]

They are crown/leyland contract white tubs. Been stored in a cool garage

Cool is good, freezing is bad.