Aco drain to take water away from dining room wall

[AdamD]

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?

Edited 14 hours ago by AdamD

[AdamD]

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

Edited 14 hours ago by AdamD

[AdamD]

Edited 14 hours ago by AdamD

[Mr Punter]

Cheeky (expletive deleted)ers.  DIY job. What ventilation is under the floor?

[AdamD]

Suspended timber floor

[AdamD]

9 hours ago, Mr Punter said:

Cheeky (expletive deleted)ers.  DIY job. What ventilation is under the floor?

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.

[Redbeard]

When you or your builder start talking about 'soakaways', be sure you are on the same wavelength. IIRC the PavingExpert site used to have a really good 'primer' re soakaways. Apart from anything I often see 'soakaways' (or reference to them) which don't comply with the rules re proximity to buildings, boundaries, neighbours and so on. Equally a shallow pit full of rubble may function as a soakaway for a while and then cease to do so. If you go the soakaway route get some good drawings and follow them.

 

Also, given that conservatories may be exempt from quite a lot of 'the regs' (and may also just not necessarily be built well) beware of excavating around something which may have very minimal footings. Do test-pits first. Given the extent (or lack of it) of the job and the price quoted, if it were mine I'd be looking at whether I could do it myself and do it carefully, prudently and in line with 'the rules'.

Edited 3 hours ago by Redbeard

[Spinny]

So is that some green artificial grass matting outside the bifolds ?

Internal FFL looks as though it is lower than the outside ground level under the artificial grass. And which way does the ground slope, does it have a proper fall away from the bifolds ?

I might guess rain goes through the artificial grass and pools underneath unable to runaway because of lack of slope, and the presence of the artificial grass stopping it from running away or indeed evaporating.

Maybe consider lowering the outside ground level which looks like it could well be above DPC. If you are going to have to shell out then make sure it is a proper permanent fix you are going for. (Have you got an internal step up somewhere ?)