How Do You Cut a Bastard or Irregular Hip Roof? 

I was working on a house this week (i'm a tiler) and got the opportunity to watch a chippie construct a complex looking roof. Loads of angles (sorry, i don't know what type of roof it's called!) and a huge pile of timber. The chippie spent time, pen and paper, working out angles etc before he got cracking. It actually was a joy to watch this man. Every cut he done was tight and perfect, and he took pride. And it was raining poor sod! One thing i did notice about this gentleman was that after complementing him, how self deprecating he was, only considering himself a 'workman'. He was extremely skilled and proud of his work but kept putting himself down. I told him he's not 'just a workman' but a skilled tradesman. Great vid by the way chaps.

Proper professional at work. A great example to show off the intelligence, knowledge and creativity of trade workers.

Dan knows his stuff alright. What a great addition to the team 💪

I just want to pull up on this site with a bunch of hot coffees and doughnuts or Tea, I’ve been there working in the rain and it sucks ! This is how folks put food on the table … nice work!

What a very clever guy. And a joy to listen to. Good to see him teaching the very knowledgable Roger Bisby a few things!!👍🏻🙂

It's jaw-dropping for me to hear that clever, clever man explaining maths to the rest of us dolts (apologies to fellow viewers). Bless you sir, you're an inspiration

Loved the camera shot of the rafters lining up with the hip rafter 👌

Nothing better than a pro doing what he does best great vid 👍🏻🙌

I’m a plumber by trade and always wanted to be a roofer, nothing is more rewarding when you look back and say I did that. Geometry can be head scratching for most of us

hurrah somone who knows trig, thought i was alone. This chap is the real deal!!!!

Me too and I’m 74 , always recognise a craftsman at work.

I'm sure these fellas are booked solid.

Pleasure to watch a craftsmen at work.👌

Glorious stuff. If these guys were in charge of the country we would all be better off because the don't cause problems, they solve them. They get the job done and done properly.

Dan the man on the job , could watch him all day, very clever chap 👌🏼 Me and Al have had a few bastard jobs ourselves lately 😂🤣🧱👍🏼

Mad skills mate. Absolutely brilliant 👏

Love watching u guys cut in roofs, great job keep the videos coming 💪🏻

Lovely setup of tools going on here 🙌

Good job Dan and nice to see the top plate under the rafters and a birdsmouth taking the load.

Thank goodness for experience. Great job 👏

Dan, your knowledge is endless. It maybe a bastard hip for you but every plumb cut is very tight. You are a pure genius. I could watch it 100 times and still have no clue how you worked it out. 🤣

Had a bad roof recently, new build to existing had 50mm out parallel to plates and 60mm out from gable to gable, getting over it with wood is easy compared to running roof tiles to catch up especially with 3 velux windows! Top job though lads, never get tired of watching roofs being cut.

Beautiful work and outstanding craftsmanship. What a great video- thanks!

What do you mean, 'we've been lucky with the weather', Dan?😮 It looked atrocious.😜 Great job slotting that hip in right place as they can be head scratchers on little jobs like that.😎 Thanks for the video.

Love these videos. Dad was in the trade and I loved going on jobs with him as a teenager. I ended up as a software developer and have been stuck at home staring at my laptop for the past year. Working outside, even in the wet and cold actually *making* something is starting to look very attractive!

I’ll probably never fit a roof but I love these videos and Dan is brilliant. I’m going to have to put a pitched roof over my wheelie bins or back porch in recognition of these brilliant videos 😂. Great job guys 👌🏼🏴󠁧󠁢󠁳󠁣󠁴󠁿👍🏼

I love watching these videos, I've great respect for these lads. Hard grafters cutting rafters in the pouring rain too.

Perfect, I asked for this a while back and you have finally done it. Bravo 👏

Your videos are just excellent, thanks! By the way... I commented on a previous vid of yours relating to stormdry cream. Since then I've had an interesting experience. I was trying to prevent drainage through jointing compound into under street cellars opposite a lower ground. After jointing them with a sika jointing compound, I used Resiblock paving sealant over 90% the pavers and joints. Then I thought to try the Stormdry cream on the joints, to help seal them completely, in the "water off a duck's back" way I mentioned in my earlier comment. I used the stormdry cream on half the paving joints... and what happened was extraordinary... on testing, the water, which had barely been sinking through the jointing compound after application of resiblock... suddenly started to disappear MUCH FASTER than EITHER the areas treated with both, OR the untreated jointing compound! So I was trying to figure out why when my best mate, who is much better at chemistry than I am, suggested the following which makes sense to me, and since you are a science oriented kinda guy, you might find interesting: the stormdry likely works by a chemistry that exploits a molecule with a hydrophobic and hydrophilic orientation, so one side attracts water, the other side repels it. LIkely there is a rather similar chemistry in the resiblock. So when I painted the stormdy on top of the resiblock... instead of the hydrophilic side sticking DOWN onto the grains of sand, and the hydrophobic sticking UP, the opposite happened. THe hydrophobid bonded to the hydrophobic, leaving the stormdry ass-backwards which instead of turning it into a hydrophobic duck's back, turned it into a wetting agent/wicking compound. Anyhow, thought you might find that interesting. GREAT channel, mate!

Love the video, love the background music 0:50

I remember the first time I come across a hip roof like this took me a little while to work it out as I was never shown how to do it or if I was I wasn't paying attention, just a suggestion for another video how about an up and over roof with 2 different wall plate heights this was another one that got my head scratching for a few minutes As always another great video, keep them coming

Pure class dan as usual👌

Brilliant video cheers

Exceptional tradesman 👍

I’m a lead worker by trade and it’s lovely to see people like Dan and robin take such pride in their work

Nice one, I have done a lot of these, but set them out from back of fascia to keep bell cast on the tiles the same.

Nice job, well done mate

Top job fellas

Fantastic job guys l. I do this myself but it’s always good to learn other peoples methods.

It’s the rain sound for me 😊😌😌

Head scratcher Dan, I bloody hate them. Cracking job as always 👏👏

More videos with Dan please! I’m going to have to watch this video a few times to get my head around doing a bastard hip! Although I feel like a do it on every hip I do, haha!

I do enjoy a good roof. Proper job 👍

This is what they should explain in maths. My maths is poor, I don't build roofs but I still believe it would make it more interesting for kids to show them where, what appears pointless but isn't, their maths would be used. "Want to build roofs? This is why you need this, it will help you work out the angles". "Want to do gaming programming? This bit of maths will help with that". And so on.

That looked so easy.

That's a massive calculator you got there😁 I do love it that a roofer knows trigonometry - Love the content!

You’ll go rusty Dan working in that weather🙁

ive had a roof like that when set out on plan using software hip sometimes does not run into the corner of the building also done splayed corners , which me and many a good roofer have scratched heads over , Ive found the roof framing software on cheif architect amazing for finding hip and valley runs draw any wall layout , software will try to design roof layout

👍thumbs up Dan hope you enjoyed the Suffolk rain I thought I would share with you good job.

Great tutorial video Dan, shame about the weather,

Top notch Sir, 👍🔨🇮🇪

Is both roof pitches minimal to not affect soffit widths to much? Generally on a bastard hipped roof, steeper pitch roof plate has to be higher to compensate for degree difference. In this instance the pitches are not that much apart to affect this detail. Looks that way. If anyone is interested a book called the “roofers bible” from America explains irregular pitch roof in great detail. This is what I ordered to get some insight when I was doing my time. A string line is always a very important part of a carpenters arsenal. Always will be. Only tool that can give you a true trajectory of a timber in roofing. Great content as always. Well done lads.

and they said you would never use math after school excellent job there fellas

I’m sure this man could have easily afforded a rain day but wants to get it done

As has already been explained. If you work to the height above plate then the hipboard will always hit the wall plate corner but the soffit width will need to change to keep the facia height. If you keep the soffit and facia the same and set out from the top edge of end of overhang then 1) the hipboard will not intersect the wallplate corner and 2) you may have to pack up the wallplate to pick up the bearing on the steeper pitch.

As an apprentice carpenter, would love to see Dan's trigonometry method for a irregular hip roof...another video would be great. Thanks Riley

So if it’s 38 one side and 52 the other, I guess that means that is applied to the top plumb cut of the hip also? 38/52 instead of your usual 45/45? Amazing to watch as always! The knowledge is inspiring!

Love these roof construction videos! I have had to watch this one a few times already this morning ! Cheers Also 8:08 i see a glimpse of the dewalt 54v circular saw’s. Any chance for a review on those? Ive got the DCS579 and wanna see how it stacks up as my only comparison is 18v makita saws.

I did one recently like this but also had different height on wall plate on either side by approx 100mm. It did throw the hip off the corner a good bit which looked very odd. Took a good bit of head scratching to get it right I can tell you. Hip was 6m long so would've been expensive one to redo if wrong.

Now theres a master at work

I want to be this man's apprentice. I'm 49.

No mention about dropping the hip or diahedral angle ? Would be great if Robin or Dan went into some detail about this in a hip video !!

Simple really! 😉

I can tell Dans cut 1000’s of birdsmouths just with that little ping he does with a handsaw knocking out the waste

This guys seems a very good carpenter I would love to have a days work on the roof learning some of his skills

Where did you get the double rack attachment for the paslode please?

Does this apply to valley rafters as well ?

Loving the title of this 😂

Just a quick one, have done many bastard hips before and I always pull a string line down through the corner of the brickwork and NOT the corner of the wall plates. (The true corner of the build?!) Therefore the hip rafter won’t sit in the corner of the wall plates it will be slightly to one side, giving a different HAP on both pitches (assuming both wall plates have been fixed down the same dimension from the face brickwork) I can’t see how Dan has managed to keep the HAP the same on both sides....with the hip NOT coming down at 45degrees in plan to a 90degree corner it’s surly impossible that both sides of the hips birds mouth end up with the same HAP?? Love that roofing square Dan, great bit of kit

Proper chippy 👌

This is fun to watch I use my calculator because it’s faster But this is how I learned how to frame cut up roofs

just wow.

People always thought I was being crude when I mentioned bastard mitres. 😂

Given the height above plate was the same for both roofs at the birds mouth - won’t the eaves height be different at the toe of the rafter? I.e the fascia heights will be different?

I want the exact framing gun link pleaseeee

Never judge a (trigonometry) book by its cover..... Clever bloke.

Looks great , do you end up with a difference in height with the soffits because one side is steeper than the other ?

At 4:50 Dan is about to explain how he checks the hip is correct but the video edit cuts it out. It looks like he is going to use that bit of timber cut to 127mm to check. Does he use that to sit the hip above the plate and scribe it in? I'd be interested to see that bit of footage or have it explained. Thanks in advance.

Dan also invested the sandvik (bahco) knock.

This is cool to watch, here in BC, Canada. Measurements give me a headache though, “127mm” ughh haha that’s just a 2x6 bro. 5.5 inches easier on my builder brain

What are they you are using, pencils, pens???? 🤔

Great to see you back, but what a bastard job you've picked, that opposite figure is that the rise from wallplate to birdsmouth, also how did you work out the splay cuts on those Jack's ? Was that with the iPad.

Wood framed roof and floor. Block and mortar for walls? This is how it's done in the UK?

ITS RAINING CARPENTARS DAY OFF

Could you askeyerman please, how often does he make an error where a bit of wood is to short or angle wrong? I need a refrence to measure how dumb i should feel. A dumbbob?

Nice roof, get a scaffold up though so much easier.

I believe if you have two different pitches and you have kept the HAP ( height above plate) the same on either side of the hip, then I’m afraid you will have conflicting fascia heights as you turn the corner. I would of looked at specified measurements where the fascia lines are to meet on the outside corner thus giving you the correct striking line as to where your hip should of fell on wall plates. It’s hard to explain but the true line of the hip is where there fascia corner is.

That B'stard Chippy looks like the Fella who BROKE the #GuinnessWorldrecord for holding his breath Under Water this week ;-)

School maths can be useful after all. Can you please show us how you apply calculus in your next video thank 😂

What would happen on the inside of the ceiling where the hip hangs down more than the common rafters?

Ja das ist gute .

Another couple of points, I would usually swing the hip over a bit so that it meets the corner of the facias, but your right it can be a bit of a fiddle getting it to sit right then. Also, looking at the rain pouring onto the oversite reiterates why we always put the dpm on top of the oversite and under the insulation, that way you don't have the moisture from the concrete drying out into the room.

Roger must be almost a chippie now with all the tuition from Dan.

I like your tool belt what's it called

So didn't actually show us the full method of how to do it !! I have to learn it myself like everything else

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👍👍

weve all been working in that extension full of water at 1 time 😁

I think dans done this before 🔥🔫

Just a bit more detail would be nice awesome work