I'm in the process of building a new extension and the plans state
that I have to use 100mm Celcon HiSeven Insulating Blocks for the
inner skin of the cavity wall.
Does anybody know of a cheaper non-branded equivalent (eg. Wickes)?
Thank you in advance for any help.
On 15 Dec 2003 12:00:24 -0800, a particular chimpanzee named
firstname.lastname@example.org (Philip Riding) randomly hit the keyboard and
Why Hi7? They are the stronger (7N) version of the normal aircrete
blocks, but unless the extension is three storeys high, then normal
2.8N blocks would be adequate in most circs.
IIRC, they have the same insulation value as Celcon Standard blocks,
which are the equivalent to Thermalite Shield, which have a 'k' or
'lambda' value of 0.12W/mK. If the alternatives have a 'k' value of
this or lower, then they will be just as acceptable.
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