On 10/03/2019 10:04, Tricky Dicky wrote:
My understanding is that the term "Breeze block" refers to the type
made mainly of cinders, whereas a concrete block is well, a concrete
block.

What then do you calls thermalite as?

In my mind there are at least three types - concrete, breeze, and foamed
lightweight block.


I think I would be wary of using concrete bolts/screws in the
cinder blocks owing to the point Brian made about gaps in the block
and they tend to be more friable. A Thermalite although soft enough
to almost make a hole with your finger may well take a concrete
screw, if I remember correctly one manufacturer (Plas Plugs I think)
made plastic wall plugs with a coarse thread that you screwed into
the block before pushing in a locking pin. As concrete screws have a
coarse thread they may well hold though I do not think you will be
able to do much adjustment before the hole loses any threading.

Richard



--
Any fool can believe in principles - and most of them do!