garage wall crack

[Newby2]

My house (built in 92) has an integral garage. I just noticed that there are a couple of vertical cracks on the interior wall of the garage. Some of the cracks are very thin (nearly invisible, hairline), two of them are wider and around 0.5 mm wide. I don't know how long they have been there. I wonder if it is normal and should it be a concern? I think the garage wall is made of Aerated Concrete Blocks, similar to this:

http://www.diy.com/diy/jsp/bq/nav.j...refview=search&ts=1268604023573&isSearch=true

Thanks in advance for any reply.

 

[big-all]

do you mean 5mm 0.5cm!!! if so keep an eye on it and see if it gets worse or comes and goes with the weather

if it is realy 0.5mm hang a pinny or something over it till you get round to decorating

 

[Newby2]

it is less than 1mm wide. thanks!

 

[noseall]

Vertical cracks in aerated blocks are as common as a brassy bar maid. Nowt to fret about.