Water under my bungalow

stuart45

Venting the cavity with air bricks went out many years ago. It was found to cause cold spots on the inner skin.

kuepper

Have you actually seen water and if there's a pool does it rise/fall (eg with rainfall) or stay pretty much the same - you mention water but later you just mention black mould? If there is water is it clear or does it smell? It could be ground water finding it's way to yours through the path of least resistance from beyond your property or it could be a leaking drain or leaking water pipe somewhere nearby and the water gravitates to yours.If a pool of water  I've had a similar problem in past and the council's Environmental Health came round though the same function might come under water provider these days as the law's changed since. They asked water co. to check for leaks. They put fluorescein dye down different possible sources (WC, rainwater gullies, road gullies etc) one at a time and then neighbours' houses each time waiting a few days inbetween before checking if any dye had come through to under my floor.. Problem turned out to be a broken drain under my neighbours yard and it was excavated and replaced.

Bendy_House

FreeBear said:

Bendy_House said: - my mil's new bungie - circa 2008 - also has vents above floor level, but she has solid floors and UFH. So hers must be serving the wall cavity

Could it be a block & beam floor with a void underneath ?

It would have all the appearances of being a solid concrete floor - Shoving a camera through one of the vents might reveal more. Unlikely they would have put a vent in to ventilate the cavity as it should be stuffed with insulation.

Ah, very possibly :-) I'll check levels when next over.