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How to waterpoof limestone retaining wall?

Hi Team, re: my recent retaining requirement we bit the bullet and had some nice limestone walls built. Now my question what’s the best/ easiest way to waterproof behind the walls ? I ideally don’t want to have to deal with messy bitumen paint but will if I have to. 🤷‍♂️ 🙏

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Comments

MitchellMc

Hi @PscottDIY,

I'd recommend using Crommelin 15L Blackseal Heavy Duty Bitumen Waterproofing Membrane. It's a water-based bitumen that is far less potent smelling, or messy than older types and has an easy clean-up in water.

Ensure the wall is free from dust before application to ensure it binds correctly.

Please let me know if you have any questions.

Mitchell

PscottDIY

https://www.workshop.bunnings.com.au/discussion/comment/43010#Comment_43010

Thanks @MitchellMc , could black plastic be an option instead of painting ?

MitchellMc

https://www.workshop.bunnings.com.au/discussion/comment/83819#Comment_83819

Black plastic wouldn't really seal the back of the wall as it's not adhered to it @PscottDIY. Water would still find its way behind it.

Mitchell

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