How to frame a roof. JACK RAFTERS
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- เผยแพร่เมื่อ 28 ส.ค. 2024
- How to frame a roof video looking at how we set out, measure, mark, cut and fix the jack rafters on a hipped roof
The Hilti saws used in this video
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Negative comments? Some people are just never pleased. I could watch this stuff all day. 👏
Me too mate.
Great video Robin
Watching from USA, would love to see you doing a video explaining the metric tape measure ,no good video anywhere
I was 15 when I was learning this in Ireland 1966 and the longest measuring tape was a Stanley 6' 😀so the hip rafter was measured with pinching rods (2 lengths of 2"x1" roofing batten nailed together with a pointed end towards the ridge),my boss was real old school, how things have changed over the years, I always enjoy watching Robin as I feel I am there doing it as well. He's so easy to follow for someone who wants to do the job correctly, a proper craftsman👍
True testament to you as a craftsman Robin is how many carpenters/joiners watch you (I'm another one btw). For us to spend our spare time watching you do what we've been doing all day means you have a gift...total legend IMO 👍
Hi Jake, I really appreciate the support and encouragement that my counterparts like you and others offer me, thank you for taking the time to watch and comment, hopefully bump into you somewhere!! maybe one of the many trade shows!!!
Robin,
Its great to see an acedemically well trained professional at work. Something I always admired in England. ☘️☘️
Knowing how to do something correctly and being able to explain how to do something really clearly are two skills that are rare to find in one person. You combine these two skills exceptionally well.
This ^
Brilliant craftsmanship 👌👌..you make it look so easy😊
Exactly that. Any negative comments will be from people who have never built a roof. Great video 👍🏽
Can’t believe anyone would post negative comments! You’re an excellent craftsman and your videos are always straightforward and concise. I’ve been a carpenter/joiner for over 30 years but I still learn better and more effective ways of doing stuff through your videos. Thanks Robin👍👍
Thank you very much!
This is from one of your viewers in the US. I fail to understand how anyone can be critical of anything you’ve done so far. I’ve seen most if not all and keep coming back for more because it’s a GOLD MINE of information. I strongly suspect that the vast majority see you as a decent guy trying to provide worthwhile information and are doing it SUCCESSFULLY! I ALWAYS look forward to your videos. In my opinion, you’re WORLD CLASS. Keep up the excellent work!
Thanks for doing this video Robin. So good to see you in action on site again. We really appreciate what you do! Been a carpenter for 25 years and Still learning new things from you.
Awesome! Thank you!
Explained so articulately Robin ! Many years ago when I was an apprentice, I worked with an old Yorkshire bloke whose mantra was "whatever tha' does in life, tha's got to work to a system"...…I've never forgotten his mantra ...
Nice mantra and its amazing what we hear and never forget.. words of wisdom!!
You make this look like child's play. That's the mark of a true professional.
Great to see the methodical approach of the cut work!
Great video Rob people with the negative comments must be talking absolute rubbish , I'm a cabinet maker and when I'm watching your videos wish sometimes I'd gone into roofing when I left college
Thank you Russell
always an absolute pleasure watching you Robin. thank you so much for sharing your standards with us. there is nothing simple about your work it is the result of many years of experience, good tutors (perhaps) and the patience of a saint. bless you
You are so welcome!
Now, just to get the brickies to build a level and square building and we're golden!
Always a pleasure watching you work,I’ve been in the game for 35 years ,I’m always learning we all do things differently but your efforts for streamlining and improving are second to none,working alone is something I enjoy time to time,I like the way you make this manageable,keep it up Robin,EXCELLENT 💪
Well done Robin. A masterclass on Jack rafters.
Robster the master!
You explained how to cut a roof, clearer, made it more productive, and without that ready reckoner book that my old tutor used to swear by.
Love your stuff.
Love the way Robin does this all by himself.
Done a few myself over the years but the method for mirroring the Jack Rafters is superb. 👌🏼
Super slick operation! Lovely job!
Thank you very much!
Seen you a lot over the years, you never cease to amaze me, always upping your efficiency....very enjoyable to watch you work sir!
Brilliant as your videos are always 👌. I never learned the calcs on the diminishing jacks. It's a handy formula to use. I like the method of putting two jacks in the centre of the hip to keep it nice and straight. Nothing like sighting a hip and its arrow straight after jacks are in. I've seen them been loaded up on one side of a hip nailed fully 🙄. Great video. Im waiting patienly for your gazebo build video to start. 😂
Thanks Robin that is an awesome approach on setting jack rafters. For those of us who never would have figured out that gang approach we thank you! I sure hope the negative comments didn’t come from the USA.
Thank you I appreciate you sharing!
Glad you enjoyed it
True craftsmanship, so interesting to see how efficiently a professional marks all the cuts with minimal time and effort . I’d be on for hours working each one out! Great videos Robin thanks.
Glad you enjoyed it!
Very interesting video, it was taught in a different way in the army when I worked as a slave to a chippy on a project in Germany but when I did a refresher after discharge even though I already had the qualification. We actually did a practice run on a mock up while on my construction BTEC at Chester College then the roofers used it to practice on.
Every cut was by hand as power tools were not as good as they are now back in the 80's. We didn't really touch power tools even on my HND either as it wasn't as much hands on as the BTEC. I was never hands on after that and tended to be management until I left construction in the 90's.
After all that I never got to build a hipped roof. ☹
never thought there's so much math involved in roofing! thanks for educating us DIYers
Pythagoras theorem & complementary angles only, in this case
Great video robin, still looking forward to buying one of your roofing squares when they are available
Very soon!
Love the use and display of the common diminish method. Good to see a template rafter as well 👌🏻👍
Great stuff that should be taught to all rough frame carpenters❗️
Construction mathematics ❗️
Unfortunately, it's not taught 🤬❗️
Lol, it would be great if someone was teaching this in feet and inches.😂
Great job, brother👏💜❗️
Thank you mate!! I can do the feet and inches maybe I will do a video at some point!!!
@@ukconstruction you're welcome.
That's awesome ❗️
Hey Robin, I know you've probably had those saw horses for around 20 odd years, but I feel if they were just 200-250 mm taller it would save your back a great deal.
I agree with what you're saying and have mentoned this to Robin, however this video explains to me the reason why Rob prefers a lower bench/horse height.
Lovely job Robin. Liked the maths on that and especially how you used the first 5 jack rafters as templates for the other handed ones. 👍👍👍
Beautiful job Robin. Very well explained.
Mega instructional video as always aswell as precise quality workmanship. Appreciate you Robin
Thank you for this video. I've heard you mention diminish before but I've struggled to find out the calculations on how to do it. Now you've succinctly laid it out and it's much appreciated.
On another note; a grub screw came lose on my router the other day and completely buggered up my hinge jig of yours and the oak door I was working on. Think I was more upset about damaging the jig to be honest. It's worked hard for me over the last few years
Sorry to hear about the jig!! get some decent 2 part filler and this works great to fill a damaged edge!!
Thanks for watching and commenting also!
Great video Robin. Ignore the naysayers. They do not know what they are missing!
Peace and love Robbin. Only love from us. You are a legend.
Love your videos Robin thanks for all your hard work making these.
My pleasure!
hi robin you make all your work look so easy great content again
Great video and explanation. I will look at these when I build my garden office much smaller scale
Glad it was helpful!
oh 120K plus subscribers now Robin, nice one 👍🏻
A pleasure to watch
Look easy but not want a master, love you videos
So complicated but well explained
Sorry Robin had to make this into two comment the more people that look at you videos so you win. Just gos to show how some people are silly keep up the good work ❤
Another informative vid Robin, like the little osb trick for the pattern
Glad you enjoyed it
ohhh some lovely little tips there. Fantastic Thank you
I was expecting Dr. Who to step out and give you a hand! 😀
Hello Robin as all way a great video you have a great way of explaining your trad. And as for the not so nice comments. You out working to feed and keep your family
Great Video, really useful tips. Looking forward to seeing the video with different pitches on the corner, as I'm going to be doing that myself soon. It has steel hips and valleys that tie into a cranked beam though to make it more of a headache for me 😂😂
Brilliant. Made it looks so easy.
Like all things in life... practice makes as close to perfect as you can!!!
Great videos as always
This is a case of being good at theory helps the practical and also having someone help to explain it can help . I must admit I've always measured individually over the years as didn't know how to work out the diminished. Will definitely use . The hip I usually work out the hypotenuse of the plan then use the total rise of common above the sole plate . Along the pitch line to get my angles and length of the hip. Then cut the birds mouth so the hip finishes the correct height to the common rafters. I usually set it it slightly lower so I don't need to do the diehedrial angle. Slightly cheating
I am not even a chippy , builder, or anything like that. I've never worked in the building trade and love watching your videos keep them coming. Some day, I do my own project
Magnificent 😊
Thank you Steve!!!
Awesome. You are a genius.
Thank you! 😊
great video robin
It's quite fascinating how you're utilising the best use of the minimum amount of Timber, keeping cost down.
A Cowboy gang building an extension near to me seemed to end up with 50%+ in the skip at the end of the day ...
Proper cowboys would keep the waste!
@@ricos1497 I helped myself to the wastage from the skip!
I have also seen the waste that some people generate, I like to have a tiny pile of off cuts!!!
Your a brilliant teacher 👏👏👏👍
Thank you! 😃
*you're
Hello Robin, seriously a pleasure watching you! I’m a chippy myself however I mainly do fire doors and kitchens. I know you done videos on pricing before but really interested how you price jobs like this, as your efficiency must make the customer think your over priced, but we know you shouldn’t be penalised for being good and quick at a job, just curious:) thanks again
Hi Martin, thank you for watching and commenting!! I love the fact that I have other experienced Carpenters watching my channel!!!! I do most my work on a price and i make it quite clear to people that they are paying for my labour, my experience, and most of all the profit I need to make to be self employed and pay the tax etc!!! there are some mean spirited people who want to try to work out what you are making based on the time you spent on site and the price paid and I have had that a couple of times before where the customer ha s tried telling me that I earned more than them and that he was a lawyer!!!! and from memory I probably said "and is that not allowed??" I only work for nice people now!!!!
Have a great day
@@ukconstruction report said lawyer to The Bar Council.
Lawyers can not break the law, at all ( legal, moral is given )
inclusive of cash in hand offers to known self employed.
is a good comeback to those with soft hands.
I personally always agree to discounts, but the next job will be doubled if they expect a call answered.
Do a crop gable one day if you can , might help a few
very informative,thanks.
You're welcome!
Thanks foe sharing
I appreciate your teaching work Rob.
Being here in Canada, we follow the dominant USA use of the imperial math for stick roofing. It is however being challenged by Metric calculations that seem to be more useful and understandable to apprentices and journeymen.
Many within the carpentry trade us the Roof Framers Bible as a ready reckoner for immediate calcs for roofing members.
Unfortunately the Math simply must be dumbed down for apprentices and even Journeymen as calculating in Fractions is migraine inducing for many.
Have you thought of publishing your own approach to what is called The roof framers Bible here in North America? Or do you have advice regarding a suitable publication that would wok as if it were a Metric version of the Roof Framers Bible?
I look forward to your answer and leading Rob, and thanks again for your invaluable educational work.
I would love to help our imperial using craftspeople to understand the metric way, it is very simple in comparison to imperial, maybe I can do some sort of book one day!! thank you for watching and commenting
Hello Robin , great informative video. I find my diminish by dividing the spacing by the cos. Of the angle.just another way .
Thanks Robin of course that's after I got the hang of these new fangled calculators.
Where did you get the numbers from? Your app or ready reckoner? Eg. 37.5 pitch, oh it’s 1.260 for every metre 😅 thank youuuuuu, love the vids
Great video. Is there a formulae for the diminishing related to pitch?
Rafter centres divided by cosine of the pitch. Dead easy.
How do you work out your travel on the roof to then get your deminish?
How did you work out the 260mm added on to each meter
String line on the hip rafter is what I do to keep it straight especially them long ones
I didn’t quite understand the diminish sum, how would you work the same out for a different angle?
So for every different angle the rafter length is different for every metre of run, (distanced travelled) so if you have an angle that is 1.350m for every metre of run to work out the diminish you do this
1.350 divided by 10 = .1350 now multiply this by your space so for 400 centres multiply by 4= .540mm this is the diminish
Hey Robin, why did you switch from Milwaukee to Hilti? Also, do you crown your boards? That's genius method you have there.
when is your roofing square going to come out? i've been eying it for years !
Do you have to mark on the the top plate where the birds mouth needs to be nailed, Im just wondering how you know exactly where to nail the jack rafters cheers
Is another way to find the diminish to take the difference between crown rafter length and the length of the first jack rafter (2298mm)?
Hi Robin, where can I get one of your roofing squares from please?
If I wasn’t afraid of heights, I wouldn’t mind doing this kind of work.
How do you find the weight of the Milwaukee nail gun? I have not used a Milwaukee, but I do know my Paslode is about 3-4 pounds lighter. Great Video
Weight is its only downside, gave me tennis elbow and im no wimp 😂 it's very heavy over time
I am used to it now, using it overhead is the more noticeable application that you feel the difference
👍At 2:13 time was that measurement 400mm and from which side of the timber did you measure from?
From the left side of the crown so i was effectively marking what would be the longest side of the Jack Rafter, allowing me to mark the overall length on the trestles
Brilliant. Where do you them stalls from?
These are super old, I am having some made similar and I will be selling some on my website
Where did .1260 come from pls ?
It is the measurement of the hypotenuse this is the sloping side of the triangle or the rafter line, if you search this for your pitch or angle it should be easy to find for any angle
I can't believe you get unkind comments Robin; that unacceptable!
Thanks for the video❤
@9mins how do you find the 1260mm ?
And does this change with a different pitch roof?
If I have it correctly, it’s 100cm divided by the cosine of 37.5 degrees. So yes it changes with the pitch.
top of the class
Not to try and sound really stupid but maths was never my strong point. So what would the key strokes be on a Calc as my answer always ends up being 2.666
@@hunchbackaudiomy head hurts now .
@@darrenbethell3171 On my computer's calculator I punch in 1000, then DIVIDE, then 37.5 COS, then EQUALS
Chipie - Qualite et Drolerie
Just for information, the equation to work out your run per meter (in this case 1.260 per Meter of run)
is 1 / Cos x Pitch (in Degrees i.e 37.5)
Glad I read all the comments first. That was one question I had👍
@@garyosborne-6958 On a scientific calculator you would input, 1 divided by 37.5 (or whatever your pitch in degrees is) Then press Cos, then press equals button. 👍
See that order of button presses always got me at school!
The only reason anyone would be negative about your videos is due to ignorance. Plain and simple.
The not so kind comments are probably from our mortal enemy the plasterers lol
Nice one
Hello how are you
The Americans call a hip roof with two different pitches a "Bastard roof"
We do too in the uk
@masonsamson7708 oh, I didn't know that, cheers. Do you know why? Or is it simply that they are a bastard to build hence the name?
If your working out your jack rafter don't forget it's 400 "ish" centers 😅😅😅
so efficient you make it look easy but it's not
An expert instructs for free, which you watch, and still complain. There is no understanding some people.
Wheres Ed?
💪💪💪💪💪
Every young gun can smash trusses all day, 😂
I’m 50+ and get the call regarding cut roofs.
😂😂😂
I reckon you’ve done that before 👍🏻
Yes first roof was 1987!!!
troll comment- "it's not a bridge though, is it ? where will I live !"
" who are you calling a common rafter"
" diminishing" - how offensive
" why are you so hip?"
" who is so fit?"
" why does one man need ten plates? "
" No, i'm jack rafter !"
I have no idea who would criticize a nice non binary mathematician like yourself.
suffice to say, don't let them get you down.
Neat but probably the slowest way to do it
What's the quickest?
@@ricos1497 drag all the timber on the scaffold and cut it up there I cut in the same roof and fascia soffit in a day stared at 9 done by 3 got videos to prove it and the one I did was a vaulted ceiling
@@ricos1497 plus clamping all the timber together could of cut the whole
Side in by the time you done that but I get that his teaching people and his unreal
Well Steve, your welcome to come and work with me if you want, I would like to watch your technique,
in action, maybe pop a camera on time lapse , every phone has a time lapse function and it uses very little storage on the device. When I am not filming and explaining like I am doing here, I can do obviously complete the work far quicker
@@ukconstruction when and where let’s do it 💪🏻