In message , Harry Bloomfield
writes
Graeme brought next idea :
Just found an unopened packet of wallpaper paste, that must be 20
years old. Does this stuff go 'off' or will it be OK to use? I
don't want to mix and use it, then find paper doesn't stick well,
given that it is hardly expensive stuff.

We have just done (nearly) a top to bottom redecoration with some paste
of similar age, no problems noted.

Excellent, thanks.
--
Graeme