In message of Fri, 4 Jul 2008, K writes
What sort of rat problem have you in mind? Rats coming into the
greenhouse, or rats living underneath the base?

We previously had a rat problem where the rats (who were living in next
door's compost heap) burrowed under the brick base of the greenhouse,
and lived a very merry winter inside it.

Our current greenhouse is directly on to the concrete base, and in
heavy rain we have problems with seepage under the edge. We have laid a
patch of slabs in the centre, thus raising the floor in the central
area about an inch, so that any water stays under the staging and
eventually drains back out the way it came in.

I think if it were a smaller greenhouse dampness in the winter would be
a problem, but as it's a reasonable size and with good air circulation,
we don't have any problems either with mould or with cacti rotting.

I am planning to build a brick base on which to bolt the greenhouse. I
am more worried about water just from watering the plants, cleaning the
greenhouse, getting in from the roof etc. I've read up on it today and
there were suggestions that I would get pools of water, which would
stagnate and grow algae and cause diseases in the plants.

Thanks for your reply. Am thinking of perhaps getting a concrete
foundation rather than a whole base. Don't want to mess the builder
about too much though.

Regards
Colette


--
Colette A. O'Brien