What tape do folks recommend to repair DPC sheet?
It’s a long story but after a power floated concrete slab fail (our friend assured us that he knew what he was doing)
And several weeks with diamond concrete grinding equipment
There is damage in a few places around the edges.
It’s unlikely to ever actually get wet because it’s all on top of EPS
It’s acting as more of an airtightness layer, so it would be a good idea to fix before progressing on to the internal timber frame.
Any suggestions welcome!
Thanks

Thanks Nick, it's clean on the back side and it's still at the stage where I can fold it back over the slab to repair it (it comes up vertically between the edge of the slab and the perimeter EPS, then horizontally over the EPS to the existing concrete block wall, then up a bit)

I think I'll try this one, it has some good reviews (and a few bad ones!)

https://www.screwfix.com/p/everbuild-dpm-polythene-joint-tape-black-20m-x-75mm/713FR?gclsrc=aw.ds&gad_source=1&gad_campaignid=22605815174&gbraid=0AAAAAD8IdPzQEUc_i6zmgc_gTnwsPeYql&gclid=Cj0KCQjwxo_CBhDbARIsADWpDH4i9kp1dp-TCyJKbfBwA5vKVi54sq3CMTnTmQgWaYAvU_6JrcfPaoMaAkXnEALw_wcB&gclsrc=aw.ds#product_additional_details_container

It looks like it's made of the same stuff as DPM but sticky.

FWIW, We used Siga Sicrall to hold DPM material over the outside of an opening whilst we were building, and it served very well (it's amazingly sticky) and despite being 'internal' it stood up to the rain very well for many months. I suppose Wigluv would be the closest to an approved product for your use, but it is vapour permeable if that matters.

Just to update, we tried the cheapo tape and it stuck well as long as the DPM was wiped clean of all dust with a damp rag. We were able to stick it both sides in most places. It has the consistency of electrical insulating tape (PVC) but has a serrated edge to make it easy to tear off what you need.