7 Newton Blocks

Joined
10 Apr 2007
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Humberside
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United Kingdom
Morning Guys,

I am building my small extension in 3.5 Newton blocks, but yesterday had 60 7 Newton blocks given to me, would it be best to use these on the outer skin or the inner skin, or doesn't it matter ???
 
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use them on the outer skin if you wish. they are heavy, impossible to lay when wet and you can only course up about 4 courses at a time. difficult to muck-up too.

use a more thermally efficient block on the inside, i.e. lightweight or aerated.
 

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