On 10/03/2020 19:41, Jim GM4DHJ ... wrote:
On 10/03/2020 19:40, Jim GM4DHJ ... wrote:
On 10/03/2020 13:38, Bert Coules wrote:
Is there a way of establishing the structure and integrity of a block
wall without removing the covering plaster?Â* X-rays?Â* Some other
techy wizardry?

Thanks.
if you are worried about some cracking this is normal if no provision
has been mad for expansion....
sorry shrinkage

Isn't the problem inappropriate mortar mix for the type of block ?.

Don't Modern 'white' solar blocks need a mortar mix that is
a bit weaker than the mix used for bricks or heavy breeze blocks ?.
(allows for a small amount of movement).

You can also build walls very quickly with the 'white' solar blocks
using some form of quick setting adhesive that is much thinner than
a conventional ?10mm mortar bed. Presumably you need a really
string stable foundation though, else any movement would crack
all the blocks.