"The Natural Philosopher" wrote in message
...

laid bricks and they must be hard bricks..as must any damp north facing
areas. Frost damage is severe on unheated brick..

I can attest to that

I sold my previous house because of it

the 1960's N- and E-facing extension was disappearing my eyes

and reappearing as shards on the ground below

--
http://www.gillsmith999.plus.com/