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Hi all, So I have some spare GA4100 celotex after using it for between the roof rafters. I should have enough remaining to provide a 100mm installation floor base and 75mm screed. Is GA4100 safe to use with ufh? Will the compression be too weak or will the foil cause issues? Ideally I would...

Hi all, hope you are well. We currently have an extension underway and it appears the dpm will be a good bit higher than the finished floor level (almost a block higher). I assume they have got this wrong due to sloping ground and having to add a cavity tray. The builder is no longer with us...

Hi all, I hope you are well. I have recently moved into a property with underfloor heating. When we moved in there was no water pressure in the boiler and we noticed it only took a few weeks after filling up to drop to zero. After investigating we can see the JG Manifold is leaking in several...

Hi all, I hope you are well. I am looking for some advice on our extension and how to close our cavity floor to install a bi-fold door. Currently we have a 2.05m high by 2.0m wide area for the bi-folds. On the external wall is a layer of stone directly on the blocks which has a DPC and is...

Hi all, I hope all is good with everyone. Looking for some advice, as the extension we build to give our child his own room has sadly been hit with some cowboy builders. (We got references, recommendations, saw their previous work and they were not cheap) In a nut shell they have built the...

Hi all, I hope you are well. Just looking for anyone's opinion on these cracks. Both cracks have been here since we moved in and after filling they have recently began to open again 18 months on. The first crack is against the join in the wall and runs vertical up the wall between the join. It...