This week I built the base for a large greenhouse at the top end of a long, sloping garden in Wimbledon. It's hard to tell how much material you are going to need when faced with a slope - you just have to keep going until you run out, then get some more! From six courses at one end the land slopes away so much I laid 11 courses at the other to maintain the level. In turn, that meant reinforcing the back wall with lots of concrete, a pillar and a few more hidden courses of solid concrete blocks to hold back the force of that extra soil bearing on this inside of this back wall. I've probably over-compensated as usual but this greenhouse will be made from accoya, which carries a 50-year guarantee, so everything needs to be thought in the long-term.
I'll be back here in a couple of weeks to add the accoya top on this base. Dear Robin,
Looking really good so far, and I'm delighted. Regards, William
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