"Muddymike" wrote in message
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"tjr" wrote in message
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Hi All,

I'm about to build a greenhouse on some existing paving slabs. The
slabs are very firmly laid, but are not perfectly level. I'm building
a 4' x 6' greenhouse and along the 6' length the slabs are virtually
level, but along the 4' length it drops by about 15mm.
I'd appreciate any advice.


I would not worry about so little fall.

Mike

except that verticals will not be vertical and from a distance the lean will
be noticeable if there are other true verticals in line of sight. Drive me
mad that would.

Mike