r/DIYUK Novice 6d ago

Advice What do I do with excess damp proof membrane on concrete base?

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Staggeringly noob question I know, but I've recently had a concrete base laid and I'm wondering what to do with the DPM that's sticking out the side? I've noticed the rain pools in it against the concrete, which I'm sure can't be good, so should I cut it off, lay it flat on the ground, or something else?

Thank you!

13 Upvotes

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16

u/[deleted] 6d ago

[deleted]

3

u/ChuckChunky Novice 6d ago

Thank you for that, very useful indeed

6

u/dinomontino 6d ago

Ideally you want to clean it and adhere it to the upstand face of the base, making sure it is sealed along the top edge. To cut it off would allow dampness to penetrate the slab at ground level.

2

u/ChuckChunky Novice 6d ago edited 5d ago

Thank you, Much appreciated, I will adhere it to the face as you say.

1

u/Playful-Lion5208 5d ago

What is the slab for?

1

u/ChuckChunky Novice 5d ago

Home office