Greenhouse advice

My greenhouse is raised on breeze blocks then those blue screws through the frame into the block, in case it moved,

 

Friend of mine had their greenhouse built on top of railway sleepers on edge as they are very tall and wanted extra headroom. They had 2 spikes bashed into the ground either side of the railway sleepers about 3ft apart to keep the sleepers in place and then drilled huge bolts through the bottom of the frame of the greenhouse into the sleepers. It worked fine but greenhouse isn't 18 inches off the ground, more like about 10?. That was enough for friend. It was very quick and inexpensive to achieve but maybe not high enough for what you want to do.

 

Mines on sleepers aswell. Cut to size and then screwed together at the ends with 8 inch srews. Only did it this year as I had to move it from the middle of garden ASAP because of kids.

Rusty

 

From an efficiency point of view you`d be better off putting a retaining wall in the ground (blocks or sleepers) and digging out 18" of floor. That`ll increase the internal volume and height without altering the external surface area

 

I did this years ago when I lived in England, I also found that being lower helped with watering, the soil did not dry out as quick. I don't know if it was moisture wicking in from outside, or if I was closer to the water table, but it worked.

 

Thanks for all advice. In the end I built it on wood. Approx 6 to 8 inches high. Only got the frame together yesterday. Now for the glazing.
Any opinions on using multi wall polycarbonate on the roof and glass on walls.


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