Breeze Block raised beds in Poly Tunnel

[Lame Veg]

I have recently taken over the poly tunnel and (to my mind) have done wonders but I do suffer with a lot of back problems and am finding bending is getting harder and harder.
I have started one raised bed using breeze blocks. At the moment it is only a "loose" bed - i.e. the blocks are not solidly fixed in place. The idea is that, as my back worsens, I can raise the bed another block (or 2 or 3).
I don't particularly like b/blocks in the garden but -- needs must.
Have any of you used these blocks in your tunnel? Are there any pros/cons I should be aware of? How far from the plastic walls should the blocks be? Any other tips greatfully received.
TIA.

[nickdub]

Not used blocks in a tunnel myself but I hae done a fair amount of building with them - a few points which may be relevant :-

1) beds inside walls will usually dry out faster than normal so you might want to line the soil side of the wall with something like plastic to help keep water from evaporating too quickly.

2) the weight of soil might be a problem if you plan on just using the cover plastic sheeting itself to keep it in the back of the bed - a few off-cuts of corrugated roof sheet or double wall poly-carbonate might be a useful insurance with a bar behind to take the weight.

3) if you plan on going 3 blocks high I'd want to build in some sort of reinforcement to the wall - may be either knock some posts down in to the ground and build the wall around them or stretch a bit of wire horizontally on top of the second tier of blocks and use the cement/block on top to hold it in place

[Jungle Jane]

My friend used some breeze blocks when he made a pond,they’re so heavy compared to normal bricks,I don’t think they’d move unless driven into with something,leave a gap round the side enough for you to walk round to do maintenance if you need to. Raised beds are good,my dad sits down when he’s planting stuff it’s a nice height.

[Potstubsdustbins]

The man from Grantham that grows world beating onions grows in breeze block raised beds in poly tunnels and green houses.

As to stability it depends on the style and size of block your going to use, i.e. 18 x 9 x 9 breeze will take some shifting where as 18 x 4.5 x 4.5 will go over in a light breeze unless correctly bonded.

[nickdub]

The man from Grantham that grows world beating onions grows in breeze block raised beds in poly tunnels and green houses.

As to stability it depends on the style and size of block your going to use, i.e. 18 x 9 x 9 breeze will take some shifting where as 18 x 4.5 x 4.5 will go over in a light breeze unless correctly bonded.

fully agree - the other thing about stability is that most walls get strength from being bonded to other walls at the corners, but if only one freestanding wall is being built, obviously you don't get this.

[Dogs and Veg]

Oh breeze blocks raised beds is something I want to do next year..I saw quite a few p-interest images that looked fab, herbs planted in holes etc

no advice - just good luck, hope it is a success