AdamD

Managed to get the plug clicker out. Reinstalled but getting very slight dripping from the black bit, just seeping out. Any ideas why? It’s super tight

This is a great reply, I will respond tomorrow as your input is really helping me contextualise it all. thanks

True but easier said than done, need to channel it somewhere - soak away means removing a load of slabs, trenching and creating soak away. Into existing drain is round two right angles and on up and down levels so not that easy

I mean, the whole of the downstairs sub floor (other than kitchen area - concrete) is suspended timber floor; and there are air bricks at the direct other end (lounge) and the side of the house so I think there would be cross airflow? We can’t rip everything up to excavate and put a new subfloor in, that’s not in our time or financial budget. Not possible.

I can’t remember to be honest, I don’t recall it being particularly damp but I may be guessing! can’t rip out, it’s all new flooring. no air brick which I think is an issue- the wall the joist butts up to in one of those pics is the adjoining house (semi detached) so it feels like the only place for an air brick is outside the bifold but as you can see here there’s very little room

Yeah looks similar for sure yes 1935 is ours have you addressed outside yet or as you say no aco yet so assume not? What’s your plan and route for the channels if you do? How long do you think before you have issues again ? Had ours redone in April so hoping it’ll be ok given the lack of rain we’ve had but want to address it asap attached photos again a bit bigger this time

Joist pics

Timber frame around the perimeter for the Astro to be attached to, but can be peeled back carefully for inspection. under Astro - sharp sand, then type one MOT compacted then earth. Before Astro - per picture, decorative stones, on top of the type one MOT. Stones removed prior to Astro going down. Rotten joist pics attached Yes I think there must have been as as you can see the joints were previously sistered, so clearly someone has attempted to fix them before we moved in but not the underlying issue. no air brick Cant See the dpm, render outside so isn’t obvious yep we have had damp marks inside the doors joists run left to right **joist pics to follow - even though they are under 2mb, the site won’t allow me to post as apparent they’re over so will try to convert them

Yes it’s Astro turf outside the bifolds. It looks lower but is In fact marginally higher than outside, albeit clearly not enough. slope - I need to run a level On it, will do later and refer back here. Interestingly neither of the people quoting got a spirit level on it. agree about it possibly pooling but the timber the Astro sits on seems fine which is odd. lowering could be done but creates an issue as our main patio is level wirh the Astro, I can’t be removing 50 m square of patio and lowering it all. no internal step up

I thought that as well, but whenever one challenges it certainly amongst online trade forums, they get pelted for not understanding how the business works, overheads etc. no, I fully understand all of that but can’t wrap my head around when a days labour for such a task went to a grand. I appreciate life is hideously expensive, we’re all living it, in the uk, but is a grand a day genuine value? that said, drainage does seem to be a very lucrative market so perhaps it’s just market economics.

Suspended timber floor

First pic is the area in question second one is the side of house which does to gulley the pic I couldn’t upload shows the front of conservatory. It’s essentially 2 right angles to get to the gully, approx 6-8m

We’ve had to replace some floor joists close to the bifold doors due to rot, twice this has happened, all other joists look absolutely fine. My feeling is it is related to the volume of rain that hits that area and collects. Had a few opinions and 2 quotes. 1 to aco drain all the way round to existing gulley and one just aco around the bifold and conservatory into a patio soakaway. Prices seem astronomical for 3-4 days work and fairly little and inexpensive materials bill. 5.4k and 4.8k. thoughts on this and other options?

Yeah clicker one. Took the waste off but couldn’t get to it, argh!