Joining wall and floor damp proof membrane

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Hi Guys
I am about to lay the floor in my new extension.
How do I join the floor dpc to the wall dpc please?
Thanks
Pete
 
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When footings are built up to dpc level, and then your dpm (floor) is ready to lay, make sure it goes up and overlaps the dpc level. Lay concrete, and when ready to build the superstructure, cut the dpm to stop it bridging the cavity, then lay dpc, then build
 
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Ah
I have a problem there as the walls were built first as my drains had to be sorted out later so I am now just ready to lay the floor.
Can I seal the floor dpm to the wall dpc/
Pete
 
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What I would have done in that circumstance was to leave "strips" of dpm built into dpc level, so when the dpm for the floor was laid it could have had an ample overlap, other that that just looks like you have to lay it, making sure it covers the footing below dpc on the sides, then when the concrete has gone off, trim it back to the concrete level
 
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