Mr Punter

The pipe coming in top right is wrong. Should be a channel with neat smooth benching. There are too many areas for solids to lurk. Maybe this was a "during construction" picture?

We had some plumbers connect a hot water run to the kitchen sink on the first floor of the show home. Next morning when I came in the ground floor was like a tropical rainforest, with water pouring through the ceiling and down the walls. I think a fitting popped off when the pipe cooled. We got rid of the water and put in a couple of large heaters and dehumidifiers and dried it out thoroughly. Rendered walls and tiled floors. I thought we would be up for new ceilings (2 x 12.5mm pink boards) but the only remedial needed was redecoration.

In timber frame, arson, hot works and smoking.

It may be worth seeing if you can get any information from neighbours if they have a similar property. For a proper job you may need to: remove the existing slab excavate soil beneath underpin the spine wall install a new suspended floor (beam & block or timber) The remedial option chosen before failed and will probably fail again. You could just screed the worst bits and hope for the best.

Greetings @Antparker and welcome. A few qs may help us with suggestions: When was the house built? Is it on clay soil? Are there any cracks in the walls, or is the "only" issue the floor? Does the slab have any cracks through it? (You will need to remove floor coverings in any case) It may be that all the ground floor walls are built off a proper foundation and the floor is more than one concrete slab that have settled.

I find the Reisser cutter screws are good until you are using rawlplugs, when the cutter bit tries to rip the plug apart, rotate it or otherwise mess you up.

Cut to falls insulation is expensive. Cheaper to concrete to falls and use normal insulation.

But keep the mask / headgear on, obvs.

Quite often I have seen this where they render a bit into the reveal, then paint the render, then window in, then Compriband between window and render. I think the traditional way is to render up to the frames, where Compriband would not be the right solution.

I would not bother trying to cast the channel into the concrete as if it is not spot on it will be difficult to remedy. Also the channel will get filled with all sorts of crud. We have put in some glazing where we used a recessed ali channel but formed the recess out of timber slightly over sized. We still needed to adjust some bits with a grinder and bolster. Ali trims all round. Ours slotted into the sides as well because it needed to act as a flood defence. Have you worked out floor levels with the insulation, waterproofing and fall required on the terrace v 1st floor floor?

Most of the systems I have seen you drill into concrete and face fix or fix through the base of the channel. This provides a satisfactory fixing and I imagine this is easier than trying to accurately cast the fixings into the concrete. What is the required finish on the red bit? Is there to be a coping or cill detail for this?

Normally there is a gap between the timber frame and the cladding or outer leaf ventilated to outside, so the lightweight blocks would make almost no difference to the thermal performance.

If you do the ceiling first the gap will be down to 25mm and the edges are better supported.

@Bri44 if you put an @ before someones username you can chose it from a dropdown list and they get a notification. I don't think this is a building regs issue but one of workmanship. Your builder could have left bare earth 150mm below dpc and if would have been OK. If they fitted the decking and astroturf it should have been installed correctly. From the pics it looks like it is rotten and it needs to be removed. I am not a fan of cheap softwood decking as it only lasts about 5 years and looks crap after 2. Perhaps suggest that the developer makes an offer of payment in settlement of your claim and you can go your separate ways.

@NeverEnoughCake I do not understand why you would not have a mains power connection when it is available for £7k, which could possibly be reduced. Is there an ideological or personal reason behind this, or some other motivation?

I have in laws up there and have visited a few times. I first went about 30 years ago and many of the same people and families are still there. The house we stayed in was like camping in a stone tent. We got a boat over. It is a beautiful location.

There have been a couple of recent articles in the national press about housebuilders defects so this could be of interest. You have lots of photos so perhaps contact the papers / websites with your story. I am a developer and I am keen that this sort of cowboy practice is driven out as it ruins the perception of new build homes.

I am sorry this one did not work out. There are a few very odd people at large.

A mains angle grinder is pretty cheap and quite useful.

Architects are also more focused on things like safe access for window cleaning than used to be the case, and they may suggest inward opening or reversible ones that can be cleaned from inside. Again, this is partly PI prompted, but it is no bad thing.

This happens quite frequently and is easiest to resolve with a decent conveyancing solicitor. The LR seem pretty quick at responding, so I do not think it should take too long, although it can take a few months for the amended plan to be registered. I had a fairly complex one recently where the registered plan showed some parking in slightly the wrong place as we shuffled them about at a late stage to accommodate service runs etc. We had to transfer some small parcels of land between 2 titles / owners. Legal fees were £3,500 on the time record but we agreed on £2,000. It was a bit of a pain but we wanted to make sure all the plots on site had and accurate plan. I am not sure if you are able to exchange contracts and delay completion subject to the LR issue being resolved?

At the time Building Control insisted on the non com which was only available from one supplier at huge cost. I would have preferred cement board cladding but planners wanted timber. Waste of money as it was only a field in the neighbouring site.

It was really expensive as it had to be sent across the country to have the fire retardant applied vacuum impregnated.

I have done some cladding with this. The splinters were awful and took about 2 weeks before my hands were back to normal. The timber was treated with non-com fire retardant, which may have added to the issue, but get a sample to check. I got this from Vastern in Wootton Bassett, but best to shop around.

@pocster if you have the depth you could get a sand / cement screed laid at 75mm which could work out cheaper and will take tiles without needing to prime or clean.