Tosh

I screwed backer board to the battens. This maintained an air gap at the bottom to ventilate the cladding above. Then fixed a steel mesh to stop 'things' getting up behind the cladding. I screwed temporary battens to support the slate and provide a consistent line (you can just see this on the left of the downpipe) then removed them later. My slate panels had clips prefabricatred into them for a mechanical support, not technically necessary in my case but I still found them useful. Ignore the downpipe connection, that was a temp setup whilst we waited for the correct pieces from lindab to arrive.

If you're going to run single cables from point to point then Kopex is the easiest and you could easily do that yourself. If you're not sure how many cables you need put a couple of extra in unterminated. They coule also double up as draw strings as well. You can also get split Kopex which can get you out of trouble sometimes. Another possible option is to run a backbone of trunking, something like 50 x 50 trunking in the ceiling, and break out to conduit drops maybe but a bit more thought required for this and without seeing your layout/obstacles its hard to say.

We just put the skirting foam around the internal walls, external is ICF so not required. For the cost and ease it does help stop any screed escaping if you have a rip in the membrane upstand for example. If you want/need to put something in the doorways theres a couple of options. Just screw some ply/mdf/whatever it to one side of the door lining/studs and put the skirt foam over it so its easier to remove the ply afterwards then fill with expanding foam or just trim it down after the screed has poured. Even if there were a few cracks then just accommodate it in the build up under the finish e.g. ditra/flexible adhesive We had 140sqm 65mm gypsum, no joints - no cracks

Very kind words @Big Jimbo, like many on here been a labour of love. Living off site, only working on it at weekends, kids, dogs blah blah.

We used Greencoat, that was based on the cost of Zinc at the time and the installer saying we'd never know the difference once it was installed. He said one of the main issues with zinc is due to its softness hence you tend to get more oil canning with it especially over large uniform areas. So he tended to use it more on complicated jobs with lots of detailing e.g. bandstand roofs. Bear in mind that some of the replies are based on Greecoat pre formed and diy/contractor installed whilst others, like me, are based upon specialist subbies with the coils arriving and formed on site with specialist kit. The difference in £/m2 will account for this so make sure you understand what you're asking for and getting. I don't think you'll have a choice with zinc, as far as I'm aware it will have to be formed on site unless a supplier has started pre forming it but not aware of any.

What was the condition for the fence i.e. did they just want to know the details e.g. scale drawing with materials etc? They must of had a reason for this. Were your approved planning drawings lacking in detail and they want to mitigate concerns from neighbour? If you just want to sleep easy then just put in your application to discharge the remaining conditions. Just put in your application the details of what you've installed but without indicating you've actually installed them. If it makes you feel any better I'd purchased our windows/doors, cladding all before discharging the condition of prior approval. Risky - yes but then I didn't deviate away from what was on the outline planning drawings i.e. colour, design, shape etc. The only value add from the planning drawings were the window/door/cladding section details. They never contacted me or asked for physical material samples. From the LPA's perspective another £75 = cheers easy.

Every LPA is different but our experience was the planner wanted to keep as much as possible of the old building whereas we wanted to remove as much as possible. Our LPA were dead against converting our building in the first place so our approach was to get full planning permission established albeit with a god awful design that retained just about everything we hated about the shed we were converting just to appease the planner. Once full planning was established we then went through a couple of S73's to refine the design to something more akin to what we wanted. Although S73 is effectively another full planning application its basis is on the principle that the dwelling already has planning approved for a conversion, it removed some of the conditions e.g. retain/repair the fibre cement roof and metal sheet cladding etc. We managed to get it back to just retaining the steel frame and the existing concrete slab to retain its conversion status. The slab is hidden and the steel is embedded into the walls so you can't see any of it at all, bonkers and a waste of everyone's time and my money. Your approach will no doubt be dictated by the officer and your LPA. There were a few benefits to conversion in terms of BR but we aimed to set the bar higher than that e.g. we used new build U values as a minimum.

If you wanted to convert it back to residential then you'd need a change of use first which, without being in place, would probably scare most propestive domestic purchasers away. You say it would not be commercially viable but have you tested that i.e. advertised it as a business for sale etc. I'm anticpating the planners may want to see that before permitting a change of use but best to talk to them. A pre-app may give you some pointers.

if you're coming halfway up the slab I would've thought a few holes and some rebar to tie existing foundation and slab to new pour.

tend to agree, my experience with wood burners is trickle events just don't allow enough supply air. Just opening the window slightly usually provides a near instant combustion improvement and kindoff proves the point. Something to think about if you're not having the fire lit much is whether there's a risk of mice in the floor void deciding to nest in the pipe? If so how will you provide a louvre or the like to prevent that?

A drain at that height behind the wall sat on pea gravel will do next to nothing. The water would have to be 450mm deep before it can make use of the land drain, you might catch a bit of surface water draining from the top but water will always take the esiest route which will be past your drain, through the gravel and continue sitting on your foundation. What about lifting the level up with concrete, then allow for pea gravel to bed your pipe on then membrane to stop all the mud blocking it up, reinstate gravel, wrap with membrance and fill with soil - plenty of pics on tinternet. Your puddle in front of the wall - is that just where you dig out for foundation? would not reinstating with concrete sort that out?

You can get these as well https://www.southernsheeting.co.uk/perforated-closure-trim-ew1im.html?infinity=ict2~net~gaw~cmp~21101839195~ag~~ar~~kw~~mt~~acr~3674732697&gad_source=1&gclid=CjwKCAiAgoq7BhBxEiwAVcW0LFI8eyXq9_6uDl014PtvtJ7qFV31XMfKguJE-vRY817PHC_OGLK9iBoCGCIQAvD_BwE#240=427 The soffit mesh looks good as well. But I used perforated sheets and cut them to my own length/width to suit, can't remember exact spec of gauge/hole size but stainlees and along these lines https://www.fhbrundle.co.uk/mesh/perforated-metal?via_sb=true Whichever you choose I would look for something with some rigidity to it otherwise it will sag between fixings and also if its too light a guage the fixings like screws will dmage it hence why some have used staples.

Don't think there's any requirement to box in, just need to maintain distance to combustibles. I think you can get the aesthetics for the firestop and vent like so

or these https://www.google.com/search?q=dura+flash+flue&oq=dura+flash+flue&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIGCAEQRRg8MgYIAhBFGDzSAQoyMzk0NGowajE1qAIIsAIB&sourceid=chrome&ie=UTF-8

Dektite grommets for the external seal, as bove. Red and black rated for different temperatures I believe, red is higher. Between floors https://flexibleflueliners.com/product/ventilated-fire-stop-plate-150mm-black-kw-pro/?campaignid=21800739722&adgroupid=170161215993&keyword=&device=c&gad_source=1&gclid=Cj0KCQjwsoe5BhDiARIsAOXVoUtXOpIrQ9KMOILyf_RY0p1j_2_D0fXFubmpHBBOahnBZD0bY_YNHKEaAq2TEALw_wcB