Loose breeze blocks in loft

[apkefc]

Just a quick one, hoping for some advice if possible.

I was up in the loft yesterday and noticed where an air duct exits through the wall, a couple of breeze blocks on one side of the air duct are loose to put where they move quite a bit with a little bit of movement either way. The whole for the air duct to get through isn't particular neat through the breeze blocks anyway so I get the impression this could have been the case since the house was built about 25 years ago.

To my knowledge, it's just a couple of breeze blocks that are affected and the external brickwork is absolutely fine. I was just hoping for some advice really? It is anything to worry about and can we just re-fix the blocks in place?

Thanks in advance

 

[23vc]

It’s not something to worry about, you could do a bit of filling with mortar or expanding foam if you want.

 

[apkefc]

It’s not something to worry about, you could do a bit of filling with mortar or expanding foam if you want.

Nice one, thank you I appreciate the reply. Will get back up at the weekend and sort it.