Better insulation with this roof design
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- Опубликовано: 2 окт 2024
- Building design for better insulation is crucial, in the video I explain how we have designed the roof structure so our insulated envelope will not be compromised by timber to timber connections
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If only all builders / carpenters were as conscientious as Robin!
U should show some errors in your work looks too good to b true
What I normally see is the void behind your stud work becomes a skip for unused rock wool and kingspan.....Always remembering my college lecturer telling me a clean site is a healthy happy safe site ..great work gentleman
Indeed, good house keeping is key, 👍😁🔨🇮🇪
An old boy Paddy told me "bullshit baffles brains" you can be the best Carpenter in the world but if you leave a mess thats what the customer will remember! An average carpenter who cleans up after himself will be a super star in the customers eyes!
@@Goodwithwood69 Correct, I can't understand fellas that don't clean as they go. You'd see them clambering around a job over old studs and floor boards and bits of slab and general site debris. I can't work like that, no way. A dust pan and brush should be the minimum a chippy should have in his van. Preferably a Bluetooth vaccum and a couple of gorilla buckets, 👍🔨 🇮🇪 🇮🇪
When doing general building work, always take the time to masking tape up the doors to prevent dust from travelling into the parts of the house you aren't working in.
No customer wants their entire house coated in fine dust.
@@flyingjackcarpentry9394 Indeed, it's a simple thing but very important. That same with putting carpet protector down and ram board to protect floors. The Zip wall system is something I'm looking into as well, 👍 🔨 🇮🇪
Absolutely top notch robin. You're giving me many aspirations continue striving to this quality of work in today's sub standard world.
Great idea with the full envelope rap of PIR just wondering what fixing you used for the 25 mm PIR , normally use the standard washer for insulated slab 👍☘️🇮🇪👋😁
We bought a timber frame house in Cornwall , the roof had 125mm insulation but the knee wall only had 25mm with a cold void behind , how it past building regs is a wonder , its now improved with plaster board backed PIR to add 75mm not perfect but helps a lot , like you say good design solve problems from the start
What would we do without our fillets, eh? 😉
Wondering if you are going to board and access the remaining 'loft' space, above the ceilings, for light storage use?
Love how tidy your site is, shows how much you care I think.
He is on camera tho.
Most of us are working to deadlines and budgets so it's not always feasible to spend hours everyday cleaning.
You can stay organised and tidy to a point, but sometimes it's more economical to have one big clean every so often..
I wish I had customers willing to pay to do the job properly rather than comprising nearly every time.
Stabila R type 👌👌
Just tried ordering some gapo tape for a job I'm doing at the minute, but they don't do a 150mm which is what is specified, (with a 25mm pir over lay) I thought about using the 140mm gapo but they've only got 1 roll! I reckon you've bought their entire stock for your job?
Speak to them, as you may be able to use 120mm with the tape and the 25 under in place of 150mm the performance is probably better! They will help
@@ukconstruction was trying to avoid cutting in two lots of insulation! There's lots of angles, 4 hips, 3 hipped dormers! But I'll definitely give them a ring tomorrow!
I changed spec from 140 to 100mm before as 100mm working kicks the arse of 140mm on its own from performance standpoint - plus makes Gapotape in for free on the board saving 💃🏻
150 sounds like a lot of insulation especially if you are going over the rafters, have a chat with someone as 100 even up to 120 between should always be enough, insulation has a severe diminishment of return after the first 100mm on a u value calc but a lot of architects over specify out of paranoia I’ve found
@@OceanMaster-jq7xl it's what building control have speced
Mate you client must be over the moon. Look forward to the next video. As always a pleasure to watch. Good job mate.
I’m not joiner . I would have done this differently, I would have run a string thru aswell and mature they all were level .
Another advantage is the voids can be used for storage without compromising the insulation. Great designing!
Does this mean that the "traditional wool insulation" on the floor is not required??
@@markmann6964 it won’t be required in respect of thermal qualities, but there’ll be a need for acoustic wool for sound transmission. 👍🏼
Surely if you pir down to stud fill void wall with rock wall then pir it is much more insulated
Seeing all that insulation makes me so happy. I only wish it was in my house!
From start to finish no corners cut and attention to detail!What ever the cost this build its worth every penny👏And I’m jealous as hell😂 Wouldn’t bother snagging it be waste of time.
Well the pur board when installed was pushed in a little to deep so affecting the air flow and causing a void between the 100mm and the 25mm insulation
I'd of plumb down cill points to floor with level or laser an twanged a chalk line through the points and fixed stud wall, great job either way lads. oh an young'n wear knee pads believe me you'll thank me when you get to old Robins age
He's so tall, he can only get shinguards.
Hi Robin - We live in a 1960's bungalow and my better half allowed me to build a large model railway up there some years ago.
It is a labour of love and I am taking my time as its a project for my retirement but it is too cold in the winter and too hot in the summer up there.
I am more than capable of insulating my loft and I only want it for my trains and grandchildren to play with so it is not a conversion, just for comfort.
It is already boarded out with lights and electric, so the hard work has been done I think!
The roof joists are 100mm deep and I have been told to leave a 50mm gap between the roof felt and the 50mm insulation board using the Gapotape as you have shown.
I then cover it with 9.5 mm plaster board.
Any advice gratefully receivedreceived
Regards Chris
Nice nice nice! Noticed the info graphics describing the project in the title page.... that is a cool quick intro for the vids. Logo is solid and how it floats around and then the title dances around at the bottom. Your awesome editor is doing a great job. It's not print tho ... it's motion graphics so have the "INSULATION and VOID WALLS be same font and point as THE BIG BUILD. THE BIG BUILD | INSULATION & VOID WALLS. Always great content. Love all the talent behind your channel. It's a super great addition to your title page in the beginning of all the vids. AND of course you are great as a host and love the rest.
Hello Robin I’am a 40 year old male and finished my Level 2 Diploma in Joinery/Carpentry in July time, and loving it btw, wish I had of done it when I left school, I was just wondering have you got any ideas on how would be the best way to get a full time job as a Joiner if I have no experience? I’am already in full time work doing something completely different, I have kids and a Mortgage so doing an apprenticeship isn’t feasible. Thanks.
Hello Robin,
Precision engineering, accuracy, experience and knowledge will make perfect looking job.
Best regards,
Ahmed
Do those Velux allow the plasterboard to come into the bottom rebate at an angle and still give a good fill? I've had trouble before trying to splay the side rebates (on Fakro I think it was). Maybe top and bottom rebates are meant for bigger angles in any case?
"it's about exactly right" is the best thing you've ever said Robin ;-)
Lovely job, I wish everyone understood how much easier it is to work when everything is spot on. Instead of constantly compromising or putting out fires because it's all "a bit out".
I learned early on that you need to "start accurately to end accurately". And for me as a brickie/chippie that means bob on level concrete in the footings. If you get the footings 100% level, you can nearly build just using a tape measure!
Yes mate we sing from the same hymn sheet!!
100% agree with going from the wall plate to the ridge in solid insulation, Ive never understood how behind wall and in ceiling spaces it 'OK' to just chuck abit of rockwool in.
Great job and really tidy eaves. Also makes it safe space for plumbing and electrics if required, and a clean space to do that work in, not a typical rubbish dump. Top job as always. Be interesting to see on the next one how you cut that fillet - guess you can set an angle on your saw table, but is there another way if you only have simpler gear. The guys that snag/BCO your work must be paying you for the education? Keep 'em coming.
Get the lad the right pozi bit
Would insulation board work in Ireland u can get 50mm insulation on the
Whats the fire resistance performance of the roof insulation?
Hi David, I would imagine that you could probably find that information from one of the PIR insulation manufacturers websites... I have not looked at that in detail as we use the material in an encapsulated condition meaning that the surfaces that encapsulate it such as plaster board gives the required protection in terms of building regulation stipulations and timed fire resistance such as 30, 60 mins etc, many construction elements are combustable and could burn but the whole make up of a building specification works to finish with a building that will perform safely in the event of a fire and that there is enough time and alerts via mains connected smoke and heat detectors to ensure occupants can escape safely, at various points in the construction phases the building is more combustible than when it is complete and properly signed off.
I have learnt a lot just by watching your videos. Thank you 🙏
Following this very carefully Robin well done it’s nice to see good work I’ve been a builder for 51 years and I am now retired and I’ve got a self build to do and they are specifying on the ridgeRS Jays, which I hate I prefer would can you show what’s happening with your lattice ridge
Is it structural? And is it able to replace RS Jays as I have to put a flat ceiling in just as you are doing and it would be so much easier to do the lattice than the RS Jays cheers keep up the good work Pete Edmondson
Check out this video where I explain all ruclips.net/video/kdzI9MkL64Q/видео.html this is the roof design etc, I always design steelwork from a roof where ever possible
class work as always. better than the scrutts that hoy the rubbish behind the dwarf walls
P boards on first before the studwork is definitely the way to go it makes the set out much clearer aswell and an added bonus is fire protection the roofvoid is completely closed off great job looks proper
So neat, that is a lovely job! nice idea on plasterboard before the stud walls!
This reminds me I need a decent labourer. I would love to do a thorough job like this but the powers that be just want all the roof/joists/stud done then throw a couple of labourers at it to stuff in the insulation.
Plus the sparks/plumber are normally thrown into the mix.
I guess that's why these days the only bit I enjoy is a nice freshly plastered and mist coated site, a pile of skirting/architrave/doors and the place to myself!
I get that mate, it all boils down to some developer who does not give a .... and who could not really care less about the standards, it really isn't a general labourers job, it is a craftsmans job and it should take as long as it takes, a recent story in the national press reported that one of our biggest house builders last year made a profit of £66000 per house!! They have the margins to deliver better and not screw down the craftspeople!!
could you put doors in that stud + use the void behind the stud for storage ??
Yes Anthony
Very helpful video. I am finishing of my self build at the moment and my loft is the last step to complete. I have 100mm pir between the rafters and 50mm over the tops of the rafters and I was wondering the best way to put in my (much smaller than your ones) ashler walls and ceiling Collar 👍
How should the 50mm layer over the top of the rafters be fixed?
You r top class joiner and if I win the lottery I'd get you to built my house and I stay up in the Highlands of Scotland.
I would love to build there!!
Robin's carpenter skills are second to none. Just wonder does he actually put all together by himself?
How do you mean.. do I do all the work myself??
Some of the dormer insulation have yet to go in?
Robin one detail I am unsure about is about insulation in the part where the roof meets the top of the wall. I ask because my property is from 1926 and no soffits and thus an open eave. What do I do?
Of course I need airflow
Robin will you be installing battens first prior to plasterboard
Nice work lads!
Plenty of voids for those victims Cliff.
It's about exactly right - love it
Silly question alert but what size are the screws you’re using here mate?
100mm
What plaster boards will you use Robin
We install heat pumps and i wish our builders took as much care and attention to details as you! Insulation is so important and its never done properly.
I will be showing our heat pump soon!! it is all about the insulation you are so right!!
@@ukconstruction would love to see that. Heat pump system design is just as important also.
I see your thought process but respectfully disagree. I think it would be better to insulate at the Ashlar walls and not down to plate.Effectively your thermal envelope is then smaller and cheaper to heat. Although you insulating down to the plate you still have an unheated area behind ashlar walls which draw out heat from the main area
From my experience of building roof spaces for 30 years this is the best way of achieving a better envelope it's exactly the same as most European standards where they put all there insulation over the rafters or the entire roof space, if you have any calculations to prove otherwise then I would like to see that, our method also allows all the services to also be in these voids without the possibility of damage from excessive heat or cold
@@ukconstruction thanks for the feedback Robin. I work as an architectural technician so this sort of thing really interests me. I work with a SAP assessors i will get their opinion and come back to you, happy to be proved wrong. I am pretty sure the unheated space is a penalty from SAPs point of view. Out of interest do you ever work in the ipswich area or is that out of your area?
No because then there is a cold horizontal surface behind the wall. Best down to the wall plate continuous. Less risk of a heat bridge
Is the big fella stripping the heads out of all the screws or is that just the sound that impact driver makes?
Thats an impact driver
@@ukconstruction I mean that red one doesn’t sound like a regular impact driver with the rattle. It just sounds like the screws are getting their head stripped out with that particular driver
Inspiring attention to detail, great job 👌
Which tool belts do you guys use?
Hi mate, we use the @diamondbacktoolbelts they are seriously good!!
Mr Robin you are the best m8
What a joy to see both of you work! 👍👏
So when will you be talking about that shiny new hammer you have their robin? Great job as always lads
Estwing?
What is ed's hammer?
Love this level of detail.
Teeming
You are a Madman.
Yep
What struck me most (for whatever reason) was the measuring and remeasuring. Everything should already be perfect, but sometimes ….
But there is no cables siting out of dozens of orifices.
Again, big picture, you have outside air coursing through your building just behind your 125mm of PIR board, which was installed with the labor intensity of a coffered ceiling, and you’re next going to make perhaps 2000 individual penetrations to your primary air barrier using drywall fasteners.
Your building envelope concept is a bit like driving in winter with all the windows down, but wearing a thick, puffy rabbit costume, smug in the belief you’ve solved that cold car problem.
It’s all in the details tho isn’t it Travis, the first layer of PIR is between the rafters, with gapo tape to ensure air tightness. The plasterboard gets fixed into the rafters, no penetration of that first PIR.
Bang on mate
Do you miss a job when you finish it? You and your colleagues have put so much care, time and effort into this build saying goodbye has got to be tough.
We really do!! But then we have another exciting project to go on to!!
@@ukconstruction I’m glad to hear you’ve got another project on the way.
Jobs a goodin’