Spinny

I don't think you are at fault. We do actually have a couple of single origin doors ourselves which we are very happy with. I wonder what exactly happened regarding your survey - did they produce dimensioned drawings afterwards and gain your explicit sign-off/approval of them prior to manufacture ? Did the drawings show or specify the distances to the wall as an explicit design constraint ? Did they change your cill design when they realised the wall mistake and adjusted the fitting ? Were you always going to have a traditional cill rather than a low profile one ? Looks like a 50mm error - did someone build the wall out of position ? I just wonder because if there was some clear evidence that the wall issue was their reponsibility to take account of and they failed to do that then I would have thought you would have been within your rights to refuse the original fit. I found there is actually quite a lot to think about for the sizing and positioning of doors and windows - exact FFL, handle clearances, reveal clearances, threshold fixings, lintel/steel fixings, plaster lines, render lines etc. I attach our bifold drawing to show the level of info specified. You almost need to be autistic about it all. ID Systems fitters came across country last summer and were still working until 8pm one summer evening to get everything right. I would query that seal and the gasket. I think both should be fixable. When new stuff finally gets installed it is easy to be euphoric and not check it all over. On the unfinished cut edges, you could go back to a showroom and examine the showroom origin doors - do they have the same finish - if not you could raise it. Does the fall angle on the open bifolds match the non-plumb angle on the frame install ? When you build up the outside with slabs where will your drainage falls go anyway ? Normally a fall away from the house. In the end certain things are fixable with different degrees of consequence: Changing seals Changing gaskets Replacing Framing pieces Reinstalling the whole frames and doors Cutting a notch in the wall for the bifolds to open into Fitting a whole new door set made to different dimensions Replacing with different bifold make or different fitters All depends how unhappy you are, and how much you may or may not be willing/able to spend to address it.

It is only a small area. A physical DPM is going to interfere with getting a good bond. Not very likely to get any damp but would prefer to use something rather than nothing. People must want to liquid damp proof floors and then use tile adhesive all the time - what do they use ? Mapelastic AquaDefence ?

I have sunflex bifolds installed by ID Systems. I think it is very important that installation is done very precisely - everything needs to be exactly plumb - that takes time and extreme care by experienced installers. ID Systems did provide that. I don't trust a builder to do that TBH. All my window seals are very good. I did have an issue with a seal at the bottom edge of a door but it was put right. I did have some issues with wrong parts being supplied, and with my builder screwing up the opening, but that is a different thing. Drop on your doors could be install issue, or might be a 'design feature'. Yes I was told to open them as you describe, doesn't seem too much of a problem. Mine do slide right across the opening to hang at either side. I don't have a any cut ends exposed. Opening was surveyed by the fitters and dimensioned manufacturing drawings then provided for buy off before manufacture.

So I want to use tile adhesive on a horizontal surface after applying some kind of damp/waterproofing to it. (Yesterday AI recommended DryBase Liquid-Applied DPM saying I could apply tile adhesive while it was still tacky. Today it says the Drybase has to dry completely and then I may need a primer. Useless thing) What can I use and still get a good tile adhesive bond (Using Mapei Super Flexible Tile Adhesive - powder S1) ?

@Andeh What exactly have you used as your soffit material, it looks very good. Is it actual timber, or something man made ?

Not sure how Open can have any right to dig up the neighbours drive without his express permission. Would have thought to do so would be criminal trespass and damage.

@Alan Ambrose Another retrofit smart window sensor I happened across here... https://shop.siegenia.com/siegenia/en/Smarte-Systeme/Smart-Home/Smarter-Sensor/SENSOR-SET-RAL7005-GRAU-K1/p/ZUFS1000-0J9010 Interestingly they also do smart window handles that can be automatically locked and monitored and also tell you if the window is open or not... https://shop.siegenia.com/siegenia/en/p/ZHSM0020-002011

Why insulate the slab, are you heating the garage ?

Dot & Dab brings the plasterboard off the blockwork anyway. 12.5mm plasterboard with 2.5mm skim = 15mm. Dabbed off the wall by 10mm and the front of your finished wall is circa 25mm off the block work. Why no skirting board ? People do use flush skirting with shadow gaps and stuff - is that what you mean ? We have a 25mm upstand but levelling compound and flooring will cover it. Laying the top part of the screed to cover the top of the upstand could be one answer. Yes creates a small thermal bridge between floor and wall but does this matter much ?

Yes agree also. Council budgets are overwhelmed with care requirements for the ageing baby boomers. Funding for planning and building control therefore seems to get stripped back. No doubt the desire to automate and go more electronic is borne out of this - i.e. cutting council spend and cutting planning and control services. In addition the previous generation of baby boomer planners with many years of experience and knowlege are disappearing to be replaced by youngsters on low wages and little to no actual planning knowledge and experience. And they struggle to even recruit these youngsters with constant staff shortages. Planning officer I dealt with had zero knowledge of all the issues around building at boundaries - party wall act, boundary dispute law, trespass law, right to light, etc. You won't solve this by thinking you can reduce it to a monkey pressing a keyboard on 'the system'. The planning system is poacher and gamekeeper. If you reduce the gamekeeper to a monkey on a keyboard you are going to get huge amounts of poaching, bad buildings, and huge public dissatisfaction with planning decisions. (And I strongly suspect this is like so many cost cutting initiatives I have seen, which actually amount to just transferring work from a department out to the user of that service. Moving the work of using the system from the planning and control departments to the planning applicant will be a disaster for the planning process - some planning applicants do lie and deceive their way through the system you know.

Hi @Nickfromwales and all, I get that you want me to fill the cavity with concrete. But have some concerns that mean I don't really want to do that. The DPC is above the bottom of the door cill and has been stepped down to run under the door cill. Note the door is only a single door so the reveal is 890mm wide only). So the cavity wall below the floor level is below the DPC. It has grey jablite type insulation in it. I was able to pull one piece out to have a look and found there was some moisture at the bottom of the cavity there when we had very wet weather. Clearly some moisture from the ground/hardcore outside the door can work it's way through the outer leaf to the bottom of the cavity when it rains a lot. The jablite was used at that level rather than PIR because it can cope with any moisture better. So I don't want to remove the inner celcon leaf (which would be complicated now the rest of the floor is in now anyway) because it would remove the cavity 'protection' from damp, and the jablite insulation. The inner leaf is also thermal blocks and provides a point of support for closing the cavity with a board over. The cavity is also probably 450mm deep there so would be quite a bit to fill with concrete and have dry. The fundamental problem is the lack of any support on the outer leaf side of the cavity, and the fact this is difficult or impossible to access with power tools because there is only the 100mm cavity to fit any tool into. Therefore my proposed approach of bonding a support piece to the outer leaf, which also has to be insulative. To deal with the stilhetto issue I am now thinking I could put 6mm No More Ply cement board over the 20mm XPS backer board to provide more rigidity and spread any point loads. (Not sure on the best thing for bonding the two together ? No more ply adhesive ? flexible tile adhesive ?). Then the. cementitious floor leveller should go on the top of the cement board quite happily. New diagram attached. On my test piece I bonded the XPS support strip to the concrete outer leaf with Rawlplug bonded anchor R-KEM 2. Chat GPT is suggesting there might be better alternatives to use for bonding XPS to concrete - thoughts. The biggest risk would seem to be this support debonding down the line. (I have some metal angle brackets but there is no way to screw them into the outer blocks.) More thoughts comments please as I need to close this out nowish.

I thought my test piece was fine - see photo with a wider span than needed and no leveller... I thought people used this stuff under screeded underfloor heating pipes on suspended floors ?? I am thinking that with 15mm plus cementitious leveller on top it would have good compression strength and seems nice and stiff compared to thinner backer board. The stilhetto test seems pretty extreme (I havn't seen a man in stilhettos since a trip to Key West). I could stick 10mm backer board to the bottom of a piece of 12mm ply I suppose ? Never seen or used compacfoam so not sure what it is really like ? Polystyrene bears loads but not point loads. Come on England ⚽

Wow, Thanks Nick. They did say the sink will be adhered/sealed to the underside of the worktop, but no mention of any tabs, or doing this with the quartz upside down. We are looking to have both the kitchen sink and the utility sink with no overhang at the edges because both will have accessories that fit over the sink. So the join line between worktop and sink will be visible and need to be very tidily finished and sealed with an appropriate colour of sealant/adhesive. Templating has been delayed until mid July as they insist the kitchen is fully finished with it's missing pieces first. Especially as our quartz colour was discontinued 18 months ago and they found some of the last slabs at a place in Scotland for us back then. So any cock-ups on the cutting and the whole job will be screwed. Happy with that as a temporary panel fitted by the kitchen people has already been knocked out of place slightly by the sparky. Come on England ⚽

Yes, undermount sink, quartz going on top. I notice the sink has a couple of bracing pieces attached across the bowls at the side, but still sags under it's own weight. I think the fitter's idea was it could be adjusted forward/backwards as necessary., but fill the bowls with water and what would happen ?

Patching in floor at a doorway. All prepped and now the flooring guy says it won't be strong enough. Was using a strip of 20mm thick XPS backer board. Advice please - is he right or wrong ? See sketch. Backer board strip 200mm wide supported on one side on celcon blocks 100mm wide, and on other side by 30mm XPS resin bonded to blockwork. The XPS backer board is to have levelling compound applied over to about 15-18mm thick. Flooring guy says it won't pass the stilhetto test, and the XPS must be replaced with solid board ? Flooring will be LVT.