building with breeze block

[springy2000]

Can anyone give me some advice, I am building a single storey extension, 5m by 5m. Can this be built from breeze block? A friend has told me a single wall built from breeze block will be fine, can anyone confirm that is the case.

Thanks

 

[PrenticeBoyofDerry]

Breeze block or concrete block, it will depend on the newtons that the bloke will crush at to determine the load or weight it can carry.
A standard breeze block crushes at something near 3.5 newtons.
as dense concrete block nearer 8 newtons.

 

[r896neo]

blocks are fine but single skin block extensions (for habitable space) are not. If you wish to build with masonary you will need a cavity wall, ie 2 skins. I don't want to sound harsh but it sounds like you need to do a bit more research, a good start would be a chat with your local building control office.

 

[PrenticeBoyofDerry]

Can anyone give me some advice, I am building a single storey extension

is this a habitable building? If so as r896neo says "cavity wall double skin with insulation will be required"

 

[Chukka63]

single skin will be damp,simple.if you want a damp space,thats fine.unless you paing it with RIW or similar

 

[mointainwalker]

Has there been some mis-reading here ? The OP said he wanted to build a single-storey extension but the replies seem to read as if he said single-skin.

 

[Chukka63]

Has there been some mis-reading here ? The OP said he wanted to build a single-storey extension but the replies seem to read as if he said single-skin.

A friend has told me a single wall built from breeze block will be fine

 

[matt204]

If you are building it double skin with a 100mm cavity (to comply with building regs) the inner skin will have to be thermalites due to thermal efficiency. The outer skin does not have to be breeze blocks. I used dense concrete blocks on the outer skin of ours as they are stronger and about the same price.

 

[lostinfens]

The inner skin does not generally have to be "thermalite", & I would always counsel against using them for a couple of reasons. Personally I would use "Fibolite" or similar for both skins with cavity insulation. These are infinitely superior to thermalite structurally & better than conc solids thermally.
They are easy to handle and reasonably priced, but obviously require external rendering or similar protection.
Your local authority is the place to ask (assuming your telling them ),they will also have the last word in materials & importantly the type & thickness of insulation.

 

[stuart45]

Some builders are moving away from aac blocks because of cracking problems. If the external walls meet the required U value, or the whole building meets the SAP rating they are not needed. There are some houses being built with solid walls again.

 

[lostinfens]

I'm all for solid walls, got to be structurally better, less places for moisture or rodents etc. It always seems more logical to have your insulation on the side of the wall that you actually heat too. I argued about this years ago, nice to see people coming round at last