No, we are using the breeze blocks as a way of bring the level to to the same size it it now but just making the whole thing wider and longer. I have a builder coming round tomorrow re some work in the house and will ask his advice as I'll be able to show him what I want to do. I'll post a photo befor I in fill so you will see what I mean.
I think you need breeze blocks or something, to support the sides of the concrete on the left as well. i suggested a form of basic foundation for the blocks earlier, Nanna - if you put them direct on the soil it will not be stable enough. Remember the base needs to be bigger than the footprint of the greenhouse for stability - usually around 30cm bigger all ‘round. Hopefully the builder will help!
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
Still think it would be easier to lift all the slabs, put a wooden form round it all , fill with any hardcore available and then pour in 4-5 inches of concrete. Job done.
'Optimism is the faith that leads to achievement' - Helen Keller
hogweed, that would be the ideal solution but as the person who laid this in the first place put rubble in the base and then cemented it in then laid the 6 slabs on top and cemented then to the base so it's not an option, I did try to break the base but it's solid. I'm a 74 year old woman and breaking it up is something I couldn't do, my son is not around very much to help so it's down to me. A builder came round last night (he's working on a house in the street) He said to dig a trench wider than the size of the breeze blocks and to add small bits of rubble or shingle into the trench, to do that all round where we want to extend. Then to lay some cement on top of the rubble/shingle and before it set to put the breeze blocks on top and cement the sides of each block to the next as if I'm building a wall. On Friday he said he'll pop round and lay the last big slab for me.
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