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Hi Thermo, Thanks for the quick response, I'm retaining, part top soil, part light clay, part heavy clay (1/2 the wall at some points). My only concern about not putting a membrane or dpm behind the wall was that the water would seep through the wall and discolour the sleepers making ugly...

Hi Thermo, Thanks for the quick response, I'm retaining, part top soil, part light clay, part heavy clay (1/2 the wall at some points). My only concern about not putting a membrane or dpm behind the wall was that the water would seep through the wall and discolour the sleepers making ugly...

Hi, Not sure if you can help but I'm in the process of building a retaining wall out of new softwood treated railway sleepers. The wall is 1.2m high and about 6m long, I've been using your pics and comments as reference actually. I'm using the sleepers as post vertically 1.2m between each and...