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Hello. :) I'm renovating a very old house. Part of which has a downstairs flat roof extension. Building regs etc said the bedroom I extended partially out above this extension could not have a window that could be used like patio doors to access the roof and use it as a veranda. If I...

Hello to all. I've posed a couple of questions about expanded polystyrene coming in contact with cables etc. Now my paranoia turns to expanding foam. I've run polypipe and electric cables through gaps at the ends of RSJ's. To stop draughts from the flat roof coming through it would be easier...

Hello Richard. I'm doing the entire house. It's a saving of about £200. So, it's worth considering. John. :wink:

Thank you so much to both of you. Roy, you show 2 methods. Both seem to work. However, which one would you use if you were to do it again? I suppose the foil-backed one would give even more insulation. But would the other give more heat retention by providing 2 air gaps, working on the...

Aerogel? Hell fire! Have you seen the price per square metre! Space-age stuff at astro-space prices. :wink:

Thanks for the reply about lighting and RCD. I looked at the BASEC link. It's obviously a newer page then the one I found. Although, it's not conclusive, is it? BASEC say they are to undertake more research. Whatever the outcome, at least you lot have managed to give the solutions to my...

Hello to all. My logic says this method should be possible :lol: If you can dot dab boards backed with polystyrene, then does it follow that you can dot dab polystyrene and then dot dab boards to that? My local supplier sells polystyrene backed boards that are 40mm thick in total. I can buy...

Well, I thought I was sorted. :D Don't know what type of foam, not seen it yet. However, during my trawling of the net, BASEC say that even Kingspan etc can cause the same effect. They were in the process of consulting manufacturers. The oval conduit suggestion sounds fine. Not sure why I...

Thanks, RF, that's me sorted. Ahd thanks to the others as well. John. :D

Sorry. :oops: Having read your replies and my question, I realise I wasn't clear. Yes ColJack, you're right. It's to stop them touching. I'm dot dabbing with polystyrene-backed boards. I've spent days trawling the net for an answer. As for which affects what - I came across loads of...

Hello to all. Read the archives about polystyrene melting cables. I don't seem to be able to find a definitive answer? Can cables be covered with plastic capping or is that the same material as the cable. It says conduit can be used, but is that steel conduit or plastic? Would steel capping...

Checked those links. Seems I do know what it is, but under different products. The problem with that solution is, it's an old cottage. I've had to level the floors by 3 inches of screed. Then I'm putting 2 inches of Celotex down plus a floating floor. The ceilings were low to start with...

Never heard of Thermaline, but will look for it. As for being cold now ... never checked. I just assumed. I WILL check though. Yes, I have insulated between webs. They are cavity walls, and they do have trays. Thermaline/bubble wrap seem to be the options. You both seem to know what...

Hello to all. Removed a few walls and replaced them with steel beams. All with planning permission etc. I've notched the joists and set them in the beams. There's about 6mm of joist below the beams. I'm concerned that once I plasterboard over them, the beams may cause a cold spot and...

Thanks for that and all the other replies. Looks like if I want a long-lasting render I need to wait for spring. One less job for now I suppose. Plenty more to keep me going! :wink:

Many thanks to both of you for the replies. I understand it's possible to do from what you say. But, looking through the archives, opinions differ from between 1 day to 1 week for the drying time to leave before applying the top coat. Which do you go with? Scratch coat one day and finish...

Hello to all. Just finished building a bedroom extension upstairs in breeze block. It now needs rendering. I've waded through the many many posts on how to render, but there doesn't seem to be any general consensus of how to do it. Much more wading needed! However, my question is, it's...

Thanks for the reply. At the moment I don't know the exact measurements believe it or not. It's a major - to me - renovation. The concrete floor downstairs is very uneven and I haven't had chance yet to see what the finished height will be. It was my architect who said there wasn't enough...

Read up on all the regs i think. But does the stair width refer to the treads or the walls? Obviously the treads plus stringers is wider. Should the landing be the width of the treads or walls? I'm really tight on the 42 degrees so these couple of inches make a big difference. Matron...

Loved it! Very impressive and thank you very much. Never thought of looking on youtube. Loads of vids for us novices. My walls are much worse than that, but I get the idea. Didn't know what you meant by hardwalled but do now. Thanks a lot again. John. :D