What I done was to put the little stones and bits of gravel in first so that it 'sort-of' supported the base, then applied the mortar on both sides to hold it all in place. Mine wasn't bolted to the slabs as it was a lean-to and the rear of the greenhouse was screwed to the brick wall it was up against. Some of your base does touch the slabs - could you just use these areas to bolt the frame down?
Billericay - Essex
Knowledge is knowing that a tomato is a fruit. Wisdom is not putting it in a fruit salad.
If you're putting up a structure then I would install an appropriate sub base thats capable of supporting it securely and level.
Unfortunately this would involve lifting the paviors, as any other solution would be a bit of a bodge.
Nothing wrong with bodges per-se...my garden is full of them but they are a nuisance when inherited by unsuspecting non bodgers or designed as a short term fix to a long term problem.
Thanks @McRazz - I agree that lifting the pavers and making the entire base level would be the best approach. Ideally I would want to reuse the existing paving stones as they are very nice quality, but given that they are natural stone it would be more difficult to get them all level. Possibly a job for a pro (unlike myself)
When we bought our 8x6 lean-to greenhouse 30 years ago we did not buy the base that was also available.
Instead we dug foundations and put down 3 layers of brick. On top of this we put a strip of wood cemented in. The strip of wood was needed as the greenhouse cills have a downward flange. This provided a solid base to attach the greenhouse to with the bolts provided. It was also bolted to the wall at one side.
We
used gravel and a slab path inside and gravel outside, but
this could be slabs or any other material that you may have or prefer.
30 years later it is still as good and very sturdy. The proper
foundations prevent water coming in and it certainly won't blow away.
Posts
Mine wasn't bolted to the slabs as it was a lean-to and the rear of the greenhouse was screwed to the brick wall it was up against.
Some of your base does touch the slabs - could you just use these areas to bolt the frame down?
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
Unfortunately this would involve lifting the paviors, as any other solution would be a bit of a bodge.
Nothing wrong with bodges per-se...my garden is full of them but they are a nuisance when inherited by unsuspecting non bodgers or designed as a short term fix to a long term problem.