Oak sleepers - is a membrane still required if backfilled with Mot Type 1 Subbase?

Temmy · 11 Aug 2022

Hello,

Thinking of changing my plans a bit. I understand that you want to avoid soil contact with sleepers because soil will hold moisture (hence using some sort of barrier / membrane), however, if the backfill is instead Mot Type 1 Subbase is a protective membrane necessary?

Thanks!

blup · 11 Aug 2022

Type 1 will also hold moisture.

Blup

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Oak sleepers - is a membrane still required if backfilled with Mot Type 1 Subbase?

Temmy

blup

DIYnot Local

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