ICF Self Build Northum

Thanks for your response Nick. We're using the Amvic block system. The ICF has been built straight off the top of the raft foundation. And I think you're right - we haven't applied the skirt of render or the larch cladding yet (or the rainwater goods) so all of the water landing on the building is dripping onto the DMP and being directed towards the 'trouble spots'. The slab isn't the finished floor level... internally, we have another DPM, 100mm of PIR and a 55mm poured screed to go down (with UFH on top of the PIR). It does feel like I'm worrying about nothing, but want to get some extra opinions before we move beyond when we could have done something about it. Feels like the option of paining the waterproofing on the inside joint to minimise moisture ingress could be a good option. A bit belt-and-braces without going over the top.

Does anyone have any experience of sealing their ICF block to the concrete slab joint? As things stand, our external construction is up and, at ground level, we have some moisture coming in at the ICF <> slab joint. We've specified UFH internally and a further DPM is to be put down inside the property and our architect has said the moisture won't be an issue (i.e. we'll end up with a wet slab as opposed to dry slab). But I wondered if anyone else has experience of using a product like Blowerproof Liquid to add an extra level of protection? https://www.ecomerchant.co.uk/liquid-blowerproof-brush-paint-on-airtight-sealing-membrane-5kg.html

We're using Buildzone who is covering our ICF self build construction.