I'm planning on building a 1 metre high retaining wall using 4 in concrete blocks laid face down. I hadn't planned to, but I now see
Thanks,
Neil
================= I think the suggested membrane is to prevent the bricks deteriorating rather than to create a 'tanked' enclosure. I don't think the wall could be described as 'tanked' since it's got drainage holes. My front garden wall was built more than 60 years ago without a membrane and it's still in good condition. You're not building Hadrian's Wall so go ahead without the membrane as your concrete blocks are unlikely to suffer especially as they're sometimes used as footings.
Cic.
Ah, just what I was hoping to hear. Thanks for that.
Neil
But it may be worth your while putting a water-proof render on the outside, useing a Sika additive.
Deterioration & weeping may occur at the mortar joints. The cost of 1 roll of Visqueen or equivalent is very low. Cormaic's advice is usually spot on so I _would_ use it.
OK, thanks for the advice chaps.
N
You also need to drain the water out the bottom on the wall. The soil is not heavey, but the water is.
Rick
Aparently the water forces this off the wall, the waterproofing has to be on banked side.
Rick
deteriorating
was hoping to hear.
on banked side.
Um that?s what I meant, outside=earth side.. but obviously didn?t say it clearly enough. ;-)
Toby wrote
I don't know about the weep pipes though. Can you actually get 20mm copper pipe? And in a damp situation like this, in direct contact with cement, the copper won't last very long at all unless it's protected. I think I'd go for plastic myself.
Peter
Sounds spot on, my folks had a wall that just uses mortar gaps. Been there
20+ years with no problems.HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.