Adding a Lean-To on a Pole Barn Pt. 2 - Rafters & Purlins
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- Опубликовано: 15 сен 2024
- Back at my father in law's to install rafters and purlin's on his pole barn lean-to. This is addition is 9' wide and 48' long.
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Pt 1 - Setting Posts & Header Board - • Adding a Lean-To on a ...
Pt 3 - Roof Sheeting - • Adding a Lean-To on a ...
![Build a Lean To Shed Extension [Part 2- Basic Framing - Walls and Rafters]](http://i.ytimg.com/vi/J66T4R_wADw/mqdefault.jpg)
Looks really good!
@@gearjonny369 thank you for the comment! Check out my other videos there's 3 on the construction of this lean to
Nice, thanks for sharing and making it easy for people to understand.
Thank you I appreciate the comment!
If he has camo coveralls and a cloth nail bag you know he knows what he’s doing. And he’s probably done it a million times!
Haha that's for sure! I was diggin the cloth bag
@@NealORussa right! I just watched your video because I’m building one to cover my outside deck but I can’t attach it to my house due to permit codes it Hass to be freestanding would you recommend just doing the same thing you did on the outside to the inside instead of the header board against the building itself.
@@209brandonb yes and I would probably add some x bracing to the posts up against the building wall.
Great video, too the point. I'm in the process of doing the same thing and used some of your ideas. Thank You!
Watching this “after the fact” that I did the spacer boards (3/4”) also, so as to attach the ledger board. Worked great!
Your 2 videos were the Best resource for a lean to, I found on RUclips. Gibson County IN
Thank you so much for the great comment! We're not too far from each other, i live in Owensboro but work in Evansville. Enjoy your lean to!
Very cool - some great tips for the diy’er on this video.
Thanks for the comment! I have lots of DIY videos on my channel if you want to check them out or subscribe!
Hey man great job. Thanks for the complete video build set. I am doing the same and had some questions you answered.
Great to hear! Good luck on your project!
Nice job! Mine had to have 2x8 every 2ft for rafters. Northern Michigan. 60lb per sq ft snow load. U can park a School Bus on my roof.
That would be awesome, I could use the space 😂
I like that you are using 4X4s post which are plenty strong enough for our application. So many guys use 6X6
thinking their building a pole barn. The double header you use gives it a nice look but is overkill. 2X4 purlines
will work fine but I think 1X4s is all that is needed for the white polycarbonate roofing panels I am using. Mine is
11 X 21. Good Job Guyz!
!
Disagree with every comment you made. I sell pole barns every day, many have lean-tos. Any body watching in snow country, this build is not even close to what is needed. This would not fly in the north country. Even in the south, it is not up to wind loads.
@@TW14137 this would work fine in the south. I’ve built them exactly like , this other than I install diagonal kickers off post and I’m in north Arkansas which has sufficient snow and wind loads and have never had 1 call back or structural problem in over 20 years of doing so.
Wotta lotta birdsmouth cutting. I figgered my roof slope @ 10degrees. Then I cut a 10degree chamfer onto my header.
NOW, 2X4 are plenty strong enough to use as rafters sitting on the chamfer saving me time & $$.
-just a pro tip from your uncle mack...
!
Yes, definitely a good tip there! I also thought about putting the outside 2x6 lower than the inside 2x6 and that would have had similar results.
Great job I want one just like it!
Thank you for the comment! Hopefully material prices come back down to earth and you can get yours built!
Greetings from Beaumont, Texas
Hello, thanks for watching Alfred!
Great video.. Greetings from Denmark.
Thank you! Great to have viewers across the globe!
Just a couple comments. The boards against the barn are known as ledger boards, not headers. The top cut of the rafter is known as a plumb cut, not a slant cut. Just curious why you didn't have your purlins break on the rafters? It looked as if they were short. Hope you spliced a board underneath...
Thanks for the clarifications. It was covid and wood was crazy expensive. Most of the wood was leftover pieces laying around my father in laws place. Yes we spliced a board underneath.
Did u just screw the header on or did u use bolts on your headed that connects to barn..im doing 4 lean 2s at my job for my boss..I'm a equipment operator am they got me doing carpentry work so I'm getting some resources..great video..best I've seen on RUclips
Hey thanks for the great comment! The header is held to the building's header with those HSS lag screws shown at 2:33. They are high strength. I've seen other lean tos where the header is held in place with long structural nails, so I think the screws will be fine and it doesn't needs to be bolted.
@@NealORussa the one I'm doing will be a 2x12 an runs the length of the 80 ft barn and goes out 16 feet..u still think the lag screws will.be fine
@@StealthTRD hmm, I dunno,16' is a huge lean to. I'd ask your boss so it's on him 🤣. You might oughta set new posts for that. Chances are the existing posts weren't meant to support another 16' building.
@@NealORussa yea it's 6x6s 😆
Your Father in Law is Sam Elliot?!! WOW!!
Haha haven't heard that one but I can see some resemblance!
Looks good and there’s nothing like getting something done yourself. Quick question, what is the ledger board wag into of the main structure of the building?
Thanks for the comment! The ledger board is screwed into the 2x10 board that is at the top of the posts that the main building trusses sit on. We used hss screws.
Nice project. You may have said in previous video, but I’d like to know what the header is fastened to structurally on the bldg? Thanks
Thanks for the comment Kyle! The header board is fastened to the 2x10 on the inside of the building. It is the same 2x10 that the building's roof trusses sit on. And that 2x10 is fastened to the main building posts.
What is on the inside of the building that you are screwing the header too? The gutter comes down below the top board on the inside of mine.
@@TJMcClure-hs8cs this building had two 2x8 ledger boards nailed to the posts that the roof trusses sat on.
Our header board outside screwed into that outside 2x8.
I think its worth noting that for safety reasons this will not hold a snow load. Just an FYI.
Thank you for your comment. We don't have a lot of snow in KY. I have another post frame building that was built by a local contractor with permits and the post, rafter and purlin spacing are the same. Its been up for 10yrs.
What would you do different to handle snow? Pitch?
@@samped3845 without knowing your location and the snow load there may be things like larger posts, shorter post spacing, shorter rafter spacing, etc. This same design was used on another permitted pole barn I own in western Kentucky.
Wish Mn would allow that pitch but I’ve got 16’ to play with.
Yes, Minnesota gets a lot more snow than we do here in Kentucky!
It would have been helpful to show how you determined the cut lines for the rafters against the ledger and the birds mouth cut. Nice job otherwise!
I noticed some of the Purlins weren't meeting/ending together on a joist so one end may not be nailed down. Are you experiencing any of those longer purlin ends that may be not be nailed for almost 3 feet bowing any now after some time has passed?
Hey there! Haven't noticed any sagging. At those joint locations, we also tacked on a 1' piece of 2x4 to the bottom of the purlins, centered on the connection to help transfer the load between the two purlins.
Hi good video! I'm wanting to the exact same thing but my lean-to would be on the back of my barn. Not under the gutters. Those spacers you used, they wouldn't keep water out. Any advice on how I can waterproof my header board? Without cutting my existing metal siding.
For that application you'd definitely need an end wall trim piece. I don't think there's any way around cutting the existing wall sheeting and inserting this piece. www.metalpanelsinc.com/metal-trim-panels/
Otherwise you could just not worry about some water running down the wall if it's outdoor storage.
@@NealORussa was afraid you were going to say that lol. So #3 and #6 would be my situation. It'd probably just be easiest to take it all down off that end huh
@@jasong5430 well if your header board is level across that end like mine was (not pitched like shown in the sketch in the link) I think you could just use an angle grinder and cutoff wheel and cut a slit in the siding to slide the #6 trim underneath. The #3 inside corner goes on top of the sheeting so no cutting required there.
@@NealORussa yes sir. Mine would be level not pitched
Hey Neal. Does everything hang from the 5/4 boards or are they just for spacing and it all hangs from the barn posts? Is there a girt board under the metal?
Hey Don, the 5/4 boards are just spacers. The long lag bolts go through the 5/4 boards and through the sheet metal and into the 2x10 header boards inside the building. Those 2x10's are mounted to the posts and they are what the inside trusses sit on. Thanks for the question!
Notch your posts for the crossbeam to rest on so the weight of your roof is on the beam and not relying directly and solely on your through bolts.
100% correct!!! There are a lot of structure issues with this lean-to. Not thru bolting the header is a mistake! May not be an issue now but it certainly would be in the future. I hope it never collapses on anyone under load.
Thanks for the advice! Good way to do it.
What does the header board secure to on the building? Just the metal sheeting?
@@JONNYROCKIT99 hey Jonny! The boards against the barn are screwed through the metal and into the large 2x10 header boards the barn rafters sit on. Basically just sandwiching the sheet metal between the two header boards.
So if someone asked you to build this but at 47' long and 12' wide. Plus pour a 12'x14' concrete pad. How much would you charge for labor?
Probably 5-6k.
Why are there 2 header boards attached to the posts? Wouldn't 1 suffice?
The header boards against the building are secured every 5-6' I think. The header boards attached to the posts span 10-12' (i cant remember) between each post. So doubling the span length we doubled up the header boards on the posts.
Hey great video! Question for you I’m about to build the same thing off my building. Could you have just screwed the hangers right to the outside of building? Instead of putting the ledger board up? Thanks!
Yes you probably could. I have another building that was built this way by a pole barn building company so I just followed suit with the same spacing and member sizes.
Gouged the first birdsmouth, IMHO. Weaker?
I suppose it's just a tail.
The lag screws you used, are they going into a metal c purlin on the inside of the main building? I’m building one off a metal building and didn’t know if those would work or drill holes and use a large bolt
Hey Mason! The lag screws go into the 2x10 header board that is at the top of the posts. Its the same header board that the roof trusses for the main building sit on. If you're going through metal, i would drill and bolt/nut so that a screw cant work its way loose.
@@NealORussa would you do one per block or two bolts per block
@@masonmeeks7030 I'd do two. One high and one low to counteract any rotating force on the header.
great video what pitch is your lean-to
Hey thanks for the question! We didn't put a ton of fall on the lean-to. It has 12" drop over the 9' width.
What was on inside of metal building that your ledger board screws fastened to? Did you run a board on inside?
Hey Darrell, The ledger board on the outside of the building is screwed to the interior header board that all the building's trusses sit on. It was a 2x10 i believe and it was bolted to all of the 6x6 posts.
@@NealORussa ok thought you had steel struts inside vice wood. Saw the metal exterior. Understand
Hey great video! Question for you I’m about to build the same thing off my building. Could you have just screwed the hangers right to the outside of building? Instead of putting the ledger board up? Thanks!
Neal,
About to do this same thing myself, I appreciate the video! How did you find the line to mark your header on the outside of the barn? Looks like you’re right under the gutter line, I would like to tuck under my existing soffit if possible to decrease any rain falling between the lean to and existing barn.
I was originally going to just come down one foot, but like the look of yours better.
Thanks for the great comment and question! I figured the roof sheeting was 1" tall, the 2x4 purlins are 1.5"'tall and they sat on 2x6 rafters that are 5.5" tall. So that totals up to 8" from bottom of overhang soffit to bottom of rafter. Just make sure however low you need to go, you make sure there's something on the backside (inside of building) to screw into.
@@NealORussa So those screws are going into metal frame on the inside, or just through the sheet metal? Thanks.
@@TroyWical0 the large lag screw that hold the header board to the building go through the existing sheet metal and screw into a 2x10 that is the header board for the roof trusses of the building itself.
Is a permit required when building a lean like this to my shop
Really depends on your state, county or city requirements. Nothing was required for this lean to.
Great start to a lean to! I’m getting ready to build one off my small 24x30 pole barn. Is there a reason why you mounted header board (on building) below the gutters? Couldn’t you take existing building’s gutters off and mount header board into end of trusses or facia board? Just curious! Thx
Thanks for watching! We had enough height for what he wanted and it was easier to mount this way rather than moving the gutter, downspouts, and buried down spout lines. Good luck with your build!
Id also be concerned about snowload or all the snow piling onto lean-to. It's seem flatter. The reason i mention this is we have building collapse due to snowloads around me.
Hey there, we don't get a lot of snow in Kentucky, our ground snow load is 15psf, which is also used for roof calculations.
Is 10 foot spacing ok 8 ft tall 4x4 with 8 ft lean.
Hey jack! I responded to your other comment with the answer to this question on the part 1 video. Just wanted to make sure you got it!
Yes Thank you
What is the snow load requirements where you are?
Ground snow load is 15psf.
Did you use treated wood for rafters or headers?
Hey Nathan, We used standard wood for the rafters and purlins. The board against the shed is treated deck board, and I believe the header boards on the posts were treated.
@@NealORussa - Mistake!!!
Why would you not set the doubled up headers in notches cut in the top of the posts? You really don't need but one if you aren't going to sheath the roof anyway
Hey Chris, thanks for the comment! The posts are only 4x4's, so a doubled up 2x6 header board would be the same thickness of the posts. So we mounted them to the outside with long deck screws. That also makes it easy to secure the rafters to the header boards as shown at 5:58. We are going to put steel sheeting on the roof here shortly!
@@NealORussa so sorry, I thought they were 6x6's...
No problem! Good note to notch on a 6x6.
@@NealORussa careful with deck screws. They are not structural and I have seen them sheer. You want to make sure your fasteners are rated for the weight they are carrying.
@@rickmcphee4206 10-4 thanks for the heads up. Wasn't aware of that but we can throw some of the heavy duty lag bolts we used on the header board against the building for the boards attached to the posts.
What roof pitch did you end up going with?
1:12, meaning 1 foot of fall for 12' of roof.
What did you screw the header against the shop into on the inside? we are about to go through this process, and your experience is greatly appreciated!
On the inside of the building there are header beams that were 2x10's that the trusses were sitting on. If you don't have that you can screw into the posts.
@@NealORussa thanks! I have metal Ibeams that are roughly 20' apart
Also what pitch is your roof at 3 /12 or 4/12? Thanks
I'll have to double check with my father in law (it's his building) but I'd say 3/12 since that's what most pole barn trusses are around here.
Why didn’t you break the 2x4 on the rafter?
Shortage of wood and cost of lumber in 2021 😂
I’ve got a steel framed building. Not sure how I’d attach the ledger board.
I'd probably drill holes through the steel and use a bolt and nut. But really depends how thick the steel is. Are you talking like a steel frame carport type building? Or like a red iron building?
@@NealORussa It’s a red steel building. The lowest crosspiece is at 8’, the next one is at 16’. One’s too low, the other too high.
@@NealORussa The building is 24’x36’. Roof is 24’ at the peak.
@@donhammond1452 what are your columns spaced at? It would be better to mount to your columns instead of the wall girts.
@@NealORussa the columns are 12 feet apart. I hadn’t thought of using those. Still kind of squeamish about poking holes in a $50,000 barn.
what is your spacing between the 4x4 post? I was gonna go about 8ft between and didn't know if that was too far apart with a 4x4?
Those are 4x4 posts. They are spaced 8' apart. I have two other buildings with lean to's that were built with similar spacing. Though, in this instance here, these are pretty tall posts due to the downward slope of the ground. It might be good to up-size them a little if they're going to stick more than 8' out of the ground.
How long was the lag screws for header board
Bobby, i believe they were 4". The 2x6 was 1.5" thick, backer board was 1" thick, then sheet metal, then into the 1.5" thick 2x10 inside the building. That totals 4".
You're beam support should sit on top of 4x4 instead of bolted thru not good
Agree that is one way to do it. But every pole barn I've ever seen has header boards nailed to the posts.
In my opinion, too thin a post and spacing is too far apart for 2 X 6's. I build things to last and tend to not over engineer, but correctly engineer things but have never had a structural failure.
A 2 X 6 x 8' long rafter is rated at 531lbs per linear foot. The length of these rafters will support 424lbs assuming they are 8' long. Please post a photo of this lean-to with 36" of heavy wet snow on it...
By the way, it looks like you used regular lumber. Why not pressure treated? Carpenter bees are going to have a field day with this pine... And once they invade the wood, you may just cut your load rating in half...