Thanks. I’m thinking I’ll make the slab 450mm deep, but, allow for a course of bricks below ground level as well. Would that suffice? What about tree roots? Will a slab that thick and deep withstand tree roots?
Slab?, I presume you are referring to a strip foundation beneath your wall? Reinforce your foundation with a layer of A142 mesh or such which will strengthen against most root problems
Thanks. I’m thinking I’ll make the slab 450mm deep, but, allow for a course of bricks below ground level as well. Would that suffice? What about tree roots? Will a slab that thick and deep withstand tree roots?
Slab?, I presume you are referring to a strip foundation beneath your wall? Reinforce your foundation with a layer of A142 mesh or such which will strengthen against most root problems
Yep. I meant the Strip foundation not slab...I’ll look into the A142 - thank you
That would be a lot of mesh to cut for a 10m wall. I'd say you need to dig down below the root level and just use a root barrier where the problem areas are.
I’ve got no experience with root barriers. Is there a product you’d recommend?
How long is the wall? If you have a length over 7 metres you might need to consider expansion joints and possibly a pier or 2 for stability. I'd be tempted to lay it with blocks on edge and use piers rather than on flat which would be a big saving in materials. How will you be facing the wall off?
Thanks. It’s 10m long. If I lay vertically I’d need to do a second skin as the wall is 2m high. I can’t build in pillars as it does t fit with the rest of the look and space in the garden.
Remember you can offset the piers to one side or the other
I get what you’re saying and it would certainly solve a problem....but because of planters and and outdoor kitchen the pillars just don’t work.
Actually.....whilst not a replacement for the pillars, if I were to tie the perpendicular walls for the raised planters (about 400mm high) and the outdoor kitchen (about 800mm high) into the wall they would add an element of additional stability wouldn’t they?
That would be a lot of mesh to cut for a 10m wall. I'd say you need to dig down below the root level and just use a root barrier where the problem areas are.
It's 1 sheet (2.4x1.2 m) cut into 0.30 m strips laid in the bottom of the fdn. OP says he has lots of roots beneath the wall, for perhaps £25 or a sheet of mesh is it worth omitting?
That would be a lot of mesh to cut for a 10m wall. I'd say you need to dig down below the root level and just use a root barrier where the problem areas are.
It's 1 sheet (2.4x1.2 m) cut into 0.30 m strips laid in the bottom of the fdn. OP says he has lots of roots beneath the wall, for perhaps £25 or a sheet of mesh is it worth omitting?
I’ve been looking online. Can you suggest a product name to consider please?
Not really a product name type thing, used to be made by British Steel etc, sold through local suppliers. Look up steel stockholders near you. Also, I've just had a quick scamper online myself, have a look at metals4U they quote £16.98 / sheet and you may even be able to get them cut for you. Delivery will be extra I expect.
Not really a product name type thing, used to be made by British Steel etc, sold through local suppliers. Look up steel stockholders near you. Also, I've just had a quick scamper online myself, have a look at metals4U they quote £16.98 / sheet and you may even be able to get them cut for you. Delivery will be extra I expect.
Thank you for doing that. I think I completely mis-understood the product though. I thought the initial comment related to a specific fabric root barrier, a material weave kind of thing. Did you mean sheet metal?
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Also, I've just had a quick scamper online myself, have a look at metals4U they quote £16.98 / sheet and you may even be able to get them cut for you.
Delivery will be extra I expect.
Wild edges suggested a fabric root barrier.