DIYbanter - View Single Post - lime plastering

(Anna Kettle) wrote in message ...
Maybe I'm wrong, but can't you use Hydrated Lime to make the lime putty?
It
would work out a lot cheaper probably. I seem to remember at college
years ago
learning about slaking pits and lime putty mixers

Peter

That's what I've been using to make lime putty/mortar: hydrated
non-hydraulic lime. As I understand it in the old days limestone would be
roasted to get quicklime ( CaO) then doused with water to get slaked lime
( CaOH? ). I'm pretty sure slaked lime is the same as hydrated lime, so
you don't have to contend with dealing with quicklime, which is caustic
stuff.

You can use hydrated lime to make lime putty (put it in a tub of water
overnight to soak) but who would bother these days when a ready
prepared tub of lime putty is available ex stock from Jewsons. In the
old days ie 5 years ago, lime putty was much harder to get hold of and
hydrated lime was sometimes the only easy source.

Does it have a trade name?

All my local Jewson could come up with was Linseed Oil Putty!

"It's the only sort of putty we sell, sir."

MBQ