MJNewton

This is great news. I was wondering how you were getting on but didn't dare ask!

Access ceiling from above, reposition joist, move light back to original hole...

They'll have likely gone over the top of the upstand slightly thus obscuring it. I think you can see some of it exposed around the pipe in the other picture.

We've got an ex-showhome and having ripped a lot of it apart to extend it have actually found it to be really well built. I always assumed from this it's because obviously it will be on display and under scrutiny - perhaps used for BC inspection (do they inspect them all?) - and so warranted some attention to detail.

I think that's how they did our house, with just then a thin levelling compound at the end to neaten up the surface for covering.

Might a low-water 'traditional' screed such as Tarmac Truscreed be an option? We had it in our extension as it has a relatively short drying time (7 days per 25mm) and can also be laid a bit thinner than normal at around 50mm and less depending on situation.

How about cutting a hole in the OSB and fitting a piece of glass? 😉

I did exactly this too - thought it was something with my roof construction but it's sounding not uncommon! Only been in a couple of years but it's only a 4m length so not a big deal if I do have to redo should it fail from UV exposure. I suspect it'd still keep working for sometime even when it does start to perish.

I wouldn't be so sure about that - speaking to the support guys and delivery drivers at DIY Kitchens they say they've never been so busy. Seems that cancelled holidays and other Covid-related savings means that loads of people are replacing kitchens at the moment.

Thanks everyone. It's more for my own peace of mind rather than BR compliance. I've actually managed to run things now just within spec having moved things around a bit.

Okay thanks; might experiment with positioning a bit and see what might fit if the need arises.

I think it was the risk of the water moving too fast that was my concern, resulting in gurgling. Or is that unlikely in what I am assuming would be regarded as relatively short run? I don't think I could squeeze in an AAV if so.

I believe the recommended fall for 40mm waste pipes is 18-90mm per metre... I am struggling to stay within this though on a new kitchen sink installation in order to avoid some obstacles and fit everything in. It might end up being more like the equivalent of 120mm per metre - might this cause issues? The waste pipe is just under a metre long and connects into an internal soil stack via a strap boss adapter. I could maybe put in a bit of a dog leg with two 45 degree bends to allow the pipe to be a bit flatter but that feels like more a bodge than having too steep a pipe...?

Yes, as well as a KFC and Costa if that's what they want in place before houses can be built... 😉

Ah, I see. I didn't realise they'd moved the solenoid out of the machine. I'll try and err on the side of caution I think and arrange for a downward facing connection to suit all requirements.