Concrete blocks: medium density or aerated type?
On Wed, 09 Jun 2004 02:41:10 +0100, Lobster wrote:
..... a joiner who later surveyed my
handiwork said I could/should have used the much lighter aerated type
instead. Is that right? If so I could at least use those for the
second doorway!
Did he say why? Was it due to the load on a concrete slab below?
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