Can i build my entire garage out of 7N blocks?

[Ant4300]

Hi everyone,

I am building a garage in the garden out of concrete blocks (single skin, 2.5m eaves height).

Have done some ringing round for materials etc and the 7N blocks that I was going to use up to damp course are cheaper than the normal blocks that I was going to build the rest of the garage out of.

Is there a reason for this? I thought it would be the other way round with the 7N being stronger.

Also, to save on materials can I just build the whole garage out of 7N blocks?

Thanks in advance for your help

 

[tony1851]

Yes, you can build it from the 7N block, though left unrendered it will end up covered in green stuff.

 

[theoldun]

Nothing to stop you using 7n dense but buy paint grade smooth.
Only disadvantage you can only lay maximum 5 course before they are swimming every where.
Regards oldun

 

[noseall]

As per Old Codger. You faff around too much with any free ended jambs or returns and you could end up with a pile of 7n dense hard core.