ads Posted August 21 Share Posted August 21 (edited) Just looking at building an extension. Due to width limits I'm looking at using narrower external stud wall construction. I've designed/built plenty of traditional brick/block buildings. But if i went to your general local contractor would they be up to a timber frame? Edited August 21 by ads Link to comment Share on other sites More sharing options...
joe90 Posted August 21 Share Posted August 21 The problem with narrow timber construction is diminished insulstion and we here are all about insulation insulation insulation. Is saving a couple of inches worth the heating costs forever?. Link to comment Share on other sites More sharing options...
ads Posted August 21 Author Share Posted August 21 (edited) 24 minutes ago, joe90 said: The problem with narrow timber construction is diminished insulstion and we here are all about insulation insulation insulation. Is saving a couple of inches worth the heating costs forever?. Thanks. The difference is being able to put a bed in the room or not and still get around it comfortably. Managed to still keep U-values to 0.18 and a 222mm build-up. Have checked it with my BC/NHBC buddies and they seem to think it's ok.... (we shall see what my local one says soon enough!). Just checking in with Kingspan i haven't ballsed it up. NB- Also seem to have noted you can't get hold of 90mm K112 boards. So 100m it is. Edited August 21 by ads 1 Link to comment Share on other sites More sharing options...
G and J Posted August 21 Share Posted August 21 2 hours ago, joe90 said: The problem with narrow timber construction is diminished insulstion and we here are all about insulation insulation insulation. Is saving a couple of inches worth the heating costs forever?. As someone wrestling with wall thickness vs room size I sympathise. I’ve been experimenting with Jeremy’s heat loss spreadsheet and actually insulation cost vs heating cost payback is much worse than I expected, specifically meaning that after a certain level extra insulation just doesn’t pay back sensibly….. But! I’ve a horrible feeling that if I design by spreadsheet I might get the optimum financial balance but will I get the most comfortable? I guess that might simply translate for the OP into a bit of central heating rebalancing. 1 Link to comment Share on other sites More sharing options...
Dave Jones Posted August 21 Share Posted August 21 be careful it doesnt void your mortgage, essentially building a shed leanto on the side. Link to comment Share on other sites More sharing options...
joe90 Posted August 21 Share Posted August 21 4 hours ago, G and J said: I’ve a horrible feeling that if I design by spreadsheet I might get the optimum financial balance but will I get the most comfortable? Which is why I didn’t do lots of calculations, 2d glazing, attention to detail (airtightness) but nothing over the top, ASHP as no gas available. Easy to build and very comfortable and heating costs still far lower than a “normal” house 🤷♂️ Link to comment Share on other sites More sharing options...
G and J Posted August 21 Share Posted August 21 17 minutes ago, joe90 said: didn’t do lots of calculations In previous lives (well, when I was working) I encountered no end of folk who knew their calculations were correct and relevant because they had a spreadsheet that calculated numbers to 3 decimal places, or the like. So I’m with you on that one. Often an informed guess beats the calculator. 1 Link to comment Share on other sites More sharing options...
joe90 Posted August 21 Share Posted August 21 28 minutes ago, G and J said: Often an informed guess beats the calculator. It’s called “gut feeling” or “flying by the seat of your pants” 🤣 Link to comment Share on other sites More sharing options...
ads Posted August 21 Author Share Posted August 21 youd do me out of a job......... Albeit not sure youd want a structural engineer guessing stuff Link to comment Share on other sites More sharing options...
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