How do I seal around conduit through sheet DPM?

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United Kingdom
Hi- laying concrete slab over plastic sheet membrane. Have a couple of conduits with pipes in. Can anyone please confirm how to seal around pipes passing through vertical DPM sheet against wall?
You can? Thanks.
 
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There is a couple of ways, depending on the size of conduit.
You can just use DPM jointing tape or you could use some of your DPM and form a gasket around the conduit, so overlapping, then tape it up on overlaps and bottom of conduit shaft.
 

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