Unopened Polyfilla Exterior — 4 years old

DocQuincy

I have some Polyfilla (Polycell 400064 Ready Mixed Tub Multi-Purpose Exterior Polyfilla, 1 kg - Grey) that I bought 4 years ago. Unopened.

Will it still be good to use?

CliveOfIndia

Probably, as long as it has remained sealed.  If you need to use some, then open it and try a small test patch, make sure it's OK and that it sets properly.  If it's no good then you can easily buy some more (I know this is a money-saving site, but there are limits !).

But like any filler, make sure it's suitable for the intended use - wood filler is very different from plasterboard filler, for instance.

ThisIsWeird

Ready mixed stuff? So it sets by drying out?
In which case, if it hasn't set in the tub, then it's almost certainly still good to use.

Jonboy_1984

For the interior version I had an opened tub on the go for longer without issues.

DocQuincy

Great, thanks everyone. I've opened it and it looks good. Money saved.