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I think that's broadly right. For me personally though, for the few hundred quid it would cost I'd still favour getting an SE in to look around and see if they can see anything of concern (not just this particular floor given the other issues you've had). Obviously if the SE has concerns a more detailed investigation would cost more but a first visit look around won't be too pricey.

The ufh can be within the screed so it's just more screed rather than adding boards. @Nickfromwales or @ a.n.other may know how to fix pipes doen to screed. You can stick or screw down straps that pipes click into, or the egg-box-like stuff. Stroppy me would get it all paid by the developer OR you take money because you don't trust them.

Support is dropping a bit yes. But last I checked there is still a strong majority in favour of net zero policies. But if you look at the news (even left wing sources) there is increasing noise about how the public have turned against net zero but it's not held up by polling AFAIK.

Thank you @saveasteading @-rick- @Nickfromwales! Feels like the consensus on cause is very poorly laid concrete, and the solution would be to do a new pour to bring it up to flat (with whatever compound fits in this case). After that I guess I can do UFH on top of it. And a choice between forcing my patience with developer / NHBC and potentially getting it paid for or at least not invalidating warranty vs implementing it myself. The only "non-destructive" solution I came across to solve it would be Fermacell Dry Levelling Compound (granules) + fermacell Therm25 boards for the UFH (gypsum) + another gypsum board on top. Sounds good in theory, but it's super expensive, and it will force changes to entrance door and staircase. I guess always good to have a plan B.

Drilling on the North Sea won't make a noticeable difference to anything. - Energy prices - Jobs - Energy security - Government revenue It won't even make that much difference to our CO2 emissions Because, as I have said multiple times, it is the difference between the green and the red on this graph (the lower on on particular). At least, should we allow it, it will shut the clowns up. Probably be a net climate gain given the amount of hot air they expel on this subject.

True. The beams I have used were pretty straight because there were wires at top and bottom, but some curve or wobble is inevitable. Plus there are changes at joints in the eps. Anyway we don't want to worry @sisturix unnecessarily. Nobody is going to fall through eps let alone with thin screed over it Even if the lvt is out of warranty the floor can't be levelled without replacing it. So they can pay. Or you could agree to tiling if you fancy it, as one contractor could sort it. To pick up another worry. If a beam had moved then there would be dips and big cracks near that point. It's unlikely.

Every government has goals. Up until very recently all major parties had the goal of net zero by 2050 and as recently as 2024 was broadly supported by the majority of the public. It's only started dropping because of a sustained campaign by politicans who are trying to turn this into a culture war issue alongside Brexit, trans rights, vaccines etc (go check the daily sceptics stance on those issues) You are absolutely right that shifting costs about from consumers to tax payers does not directly save money over the entire system. The only thing that does save money is to have an increasing proportion of electricity produced by lower cost methods - which is renewables. Before the recent middle east issues gas was averaging about 80p/therm and rarely went above 100p. Now it has barely dipped below 100p and averages closer 10 110p. That's roughly 1/3 increase but we have been shielded from that by the fact we've only used gas for about 1/3 of our electricity. If we didn't have renewables the hike in electricity prices would have been higher than the the 5% we had. Whether that manifests itself as lower prices for the consumer is entirely a policy decision.

I have just been chatting to a mate's partner. They where banging on about Overseas Aid and we need to stop it. If we stopped OA then our Navy would have been ready to send boats to the Gulf. I asked them how much our Military Budget was, they had no idea, asked what the OA budget was, again they had no idea. Then they blamed the Boat People, then the Muslims, then the two tier policing, ended up blaming the local council for not sorting out a pothole in their road. I kept saying that they are reading the wrong newspapers and they need to look up some numbers, rather than spout an opinion. The response to that was 'listen to me, listen to me' When it got to the government not allowing for more drilling in the North Sea, I had to say 'you don't keep up with the news do you.' These (expletive deleted) are allowed to vote, and it is not going to be for Bin Face. So rather than spout opinion about a subject, get some data, then come back and state your case. If you don't, you are just spouting opinions, and as this thread has shown, the opinion spouters refuse to find any data, in fact it is worse than that, they expect others to find it, then say the data is wrong. That is the policy of time wasters and internet trolls.

Onto the next one! Turns out the 20m of 16mm pipe I had left didn't give me enough to get under the shower tray but hey ho. Used the huge notches the previous owner made in my joists to pass though rather than add in my own. 25mm acoustic insulation, 75mm PIR then 50mm rockwool under the spreader plates. Dabbing the insulated tile backer boards onto the external wall next 💪🏻

Looking A1 👌. Happy days. Another job ticked off 🫡👍

Glass set down into CT1, excess evident. Excess wiped away when wet, with lots and lots of baby wipes. Apart from the rising internal corner and the internals of the niche, all of this ensuite was a near zero silicone finish. All observing minimal grout at junctions, clear CT1’d with anything excess removed, and still looks 👌 (imo). You can just about see where the colour matched silicone diminishes on purpose before meeting the floor tile, so the change isn’t so obvious.

Sorted, thanks Nick and everyone. Time to get the walls boarded.

'your goals', 'the Party's goals', all for the greater good no doubt. So said every totalitarian government in history. Shifting energy costs from being paid through the electricity price to being paid from general taxation in order to suppress the price of electricity does not save money, it just transfers it. It is a con job.

I always grout that joint, to the shower tray, pushing it in deep with a sponge and leaving a valley on purpose. After grout is bone dry, 2 days or so, I use clear CT1 and use it very sparingly to create the final seal. Lasts decades, whereas silicone doesn't, plus white silicone is a bar steward to keep looking fresh.

If a hard water area, soak it in Viakal or similar once removed to disolve the limescale.

My mental maths says this could be even thinner. B&B flooring usually has a small crest in the middle due to the prestress. If laid with blocks then some of that will come out, but with EPS theres not much weight to take it out. So if the crown is 10mm over the room and now the depression is 27mm, you could potentially have a thickness of less than 40mm. @sisturix suggested that self levelling might have been used in the past to correct earlier defects. If so, then the thickness of the slab might be worse, or this is evidence that something moved since it was done. What would be the impact if one of the prestressed beams wasn't bedded at the ends properly and one end failed during the concrete pour? Is the slab with reinforcements sufficient to not care? The skirting board being all over the place and levels around the edge of the room being off doesn't seem great. Having said that if the floor feels solid jumping up and down on it, it probably is.

True on most normal 2 x 2 unless you're picky and double up 25 x 50 roof battens. But that's really why I asked the question of the OP and what's forcing the 50mm.

No you would leave it be. Others will advise on the material but is is standard stuff. They won't be sagging. If you jump up and down in the middle of the room do you feel movement? No? The eps would have to compress before the beams bounced. 10mm average of screed is only 10kg/m2 10 bags of sugar every m2.

I helped some locals on a different but recurring matter. The housing association were horrible throughout, but eventually gave way when they knew this was not going to be fobbed off. BUT they were desperate to get the owners/tenants to sign a confidentially agreement. ie they had no interest in sorting it for others. Others 'found out'.

I guess that is the part I'm really interested to find out. What type of screed would you use for that 0 to ~30mm depth, or would you increase level everywhere by a minimum of x mm. I imagine redo-ing it required breaking up reinforced concrete, and I imagine that's very difficult but doable? Probably the only catastrophic outcome would be the beams sagging over the limit, in which case I really don't know what can be done 🏗️

Good. To test your laser set it at one wall and take readings adjacent and as far away as you can. Then move it to a central position and do it again, to the same 2 points. The level difference should be the same. This is because the laser should be projecting horizontally but they sometimes go out, and so the error cancels out with equal distances.

With a decent tariff and a battery the spark gap is well below that (Cosy fixed) it's at 1.4:1 add in a boiler running at 90% efficiency it 1.3 and that's not taking into account the gas standing charge will is eliminated. So for at least half the year you are on pretty close to 1:1.

I hate seeing less than 40mm below / above the mesh.

Whatever you do, don't touch the beams. they are reinforced by just a couple of tensioned wires, These beams don't tend to curve much, unlike planks which curve up a lot. They are strong so won't be sagging. either The existing slab that is intended to be 75mm thick may only be 75mm - 27mm thick = 48mm in places. The good news is that it is still stronger than the eps underneath it, and won't collapse. But either it is level and hiding that the beams are in wrongly, or it is on an extreme slope and your furniture will wobble, door clearances may be wrong, and simply look squint. I'd mostly be concerned that workmanship like that suggests other errors, like the mesh will be missing or on the bottom, and may have been left exposed. The most important measure of acceptability for real use is with the straight edge. Getting a properly straight 3m edge usually involves a costly spirit level although I recently used a dry-liner's C strut and that was good. For an offficial test you can lay it in any or every position , parallel to a wall or any other angle at all. The gap is measured not only by what shows under the middle or end when laid down , but also if you push down an end, if a big gap appears at the other end. I was talking to our floor tiler about some areas of our screed that are poor, but he said it was nothing compared to most floors he sees..... so poor levelling is standard. If I had personally laid that slab so badly, or managed it badly, and it was my house, and it was definitely the only problem, then I would relevel it with screed because that will suffice. 2 people 1 day and disruption of course. If it was for a client I would redo it or discuss the screeding option with them. BUT If a housebuilder has done it then it is entirely their responsibility, including consequential losses like redoing skirtings, any wrong doors, especially patio doors, and of course a new floor covering. Plus removal of furniture, and some compensation. They will resist as they have lots of practice in hiding problems. Your gentle threats are of telling the press, or of putting up a banner saying, "come and see the quality of a non show-house here".

LVT done via the developer? I guess so, as they clearly had to dial down their GAF and get this done “regardless”.