External damproof below ground

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External damproof below ground

Post by GDiy »

Hi all,
I'm building a retaining wall (gabion) that, when back filled, will result in a section of my house wall being underground. The external wall is rendered (bit damaged but i'm fixing that). Will render alone suffice if its now underground to prevent damp getting in, or do I need to be doing something else?
Its impossible for me to tell what sort of damp proofing has been undertaken inside the house without ripping out panelling. Any advice is much appreciated.
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External damproof below ground

Post by moderator7 »

Keep questions to one thread please.
I've deleted your duplicates.
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External damproof below ground

Post by stevei »

No, the render will not be enough to stop damp penetrating. Ideally, the outside level should be two bricks below the dpc. In your case, so much depends on the position of the retaining wall, the natural water table, finished ground level above the dpc and available drainage. A plan and elvevation of the wall in question would be good.
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