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Tractor Talk Discussion Forum

O.T.-Less a roofer than a mechanic

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Kajun

10-10-2003 11:05:36




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Folks:

Farm bred and raised, serious mechanic wannabe, not much good as mechanic, now I've proved I'm no roofer. Here is the question: How do you nail corrugated roofing with lead headed nails?

Put new roof on tractor shed last Sat.; lapped 1 1/2 valleys and peaks and nailed on outermost peak. Roof has 15 degree angle. Raining this week in La. and I've got pretty significant leaks.

What did I do wrong? Obliged to all of you!

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Fred OH

10-13-2003 04:37:04




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
Heres one that goes along with the subject...if you have a nail hole leak thats dripping on your tractor seat ( or where ever) that agravates you...take a center punch and hammer and smack it from the bottom and it will stand up...so to speak and leak much less. Thanks to an old timer who told me...I'll pass it on. The posters who use the RTV (room temperature vulcanizing) to seal leaky nails or screws seem to have the best method. The only other comment that I have on corrigated roofing is to be sure and get it started straight as you can't change horses in the middle of the stream. Fred OH

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Sam#3

10-11-2003 12:08:23




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
From your discription it sounds like your approch was correct. The pitch is about a flat as I'd dare use corrugated roofing as it does have exposed holes and if it's a long roof you may start overflowing the corrugations in heavy rain. What dimention purlins did you use? If two inch and the nails protrude you should be OK. If only one inch the nails may be pulling in the heat.
I've put a lot of the steel roofing down with both leadhead and flathead nails had no reported troubles.
How many times did you hit your thumb? I found on nearly every job some one would get it twice. The first day it just knocked off a little patch of skin by the thumbnail. Simply a Awe Shocks! The second day when you hit the same spot you wanted to be wearing new denim overalls otherwise everyone would know what you did. No grin about it!

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thurlow

10-11-2003 17:48:56




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 Re: Re: O.T.-Less a roofer than a mechanic in reply to Sam#3, 10-11-2003 12:08:23  
Totally agree with your post; have built numerous sheds and barns using techniques you describe. I suppose what you call purlins are what us Southern boys call lathes. Have always used gum (sweet or black) for lathes because it is felt locally that it will hold the roofing nails better. Last two barns I've built, I used screws and put them in the "flat" as instructed, rather than nails in the ridges; like that much better, so far..... ...(only 6 years old)

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Stan TN

10-11-2003 21:29:27




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 Re: Re: Re: O.T.-Less a roofer than a mechanic in reply to thurlow, 10-11-2003 17:48:56  
Considering the way gum holds onto itself when you try to split it, that sound reasonable. My splitter sprung a leak today, you guessed it I managed to cut down a sweet gum. :-P



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Sam#3

10-11-2003 20:29:31




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 Re: Re: Re: O.T.-Less a roofer than a mechanic in reply to thurlow, 10-11-2003 17:48:56  
Purlin is defined as "a horizonal member in a roof."
Most construction 'in my day' used 2x4's about every two feet across the rafters to support the steel. Green oak, nails grew into it.



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Steve

10-10-2003 17:22:00




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
you can purchase screws with the rubber washers at the neck. I used these on the last barn roof I put up. I used a battery powered screw driver with a head that fits the bolt end of the scew (purchased at the hardware where I purchased the screws) Its been up for a year and no leaks.



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Stan TN

10-10-2003 20:27:01




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 Re: Re: O.T.-Less a roofer than a mechanic in reply to Steve, 10-10-2003 17:22:00  
Same here, sure was fun screwing rather than pounding. Roof leaks a bit now where the big branch fell on it off the cursed maple tree. I call it cursed cause another branch tore down my electric service pole.



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Nebraska Cowman

10-10-2003 17:15:59




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
I know what kind of tin you are taking about. We call it "strong barn" I put in on all my sheds, Used at that with nail holes. I just turn it upside down and the only time it leaks much is if we get a wet snow. I think you need to lap it more than 1 rib. Then like was said nail the rib on the high and don't mash the head and dimple the tin or it will leak sure.



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TomH

10-10-2003 16:43:15




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
You did start at the gutter and work up to the ridge didn't you? Because if you started at the top and overlapped lower over upper you have a big problem...



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ShepFL

10-12-2003 01:56:17




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 Re: Re: O.T.-Less a roofer than a mechanic in reply to TomH, 10-10-2003 16:43:15  
I wish I had known that prior to installing my roof. My overlapping was correct (top over btm) but the panels were offset at the bottom - entire lenght of 60 ft. roof was off 2 inches at the bottom. I had to remove and reinstall all the roofing panels. Made sure I started on gutter side when I started laying roof on the opposite side! Also used string line on top & bottom.
Grins



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Kajun

10-10-2003 12:57:33




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
Thanks markct and tlak.

I did nail on top of the corrugations like tlak showed. Wonderful linked info , by the way.

Roofing was what I call "tin". It was galvanized metal of the kind widely used in the south before these modern painted metals came out. Have to say, however, it is light stuff conpared to what I knew as a boy 45 years ago.

Gonna be out of pocket for the week-end. Much obliged.

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buck

10-10-2003 12:54:18




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  

1 and 1/2 valley and peak. Does this mean that you have the edge at the top of a peak in the corrugations? If this is true--yes big time leaks .



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markct

10-10-2003 12:33:06




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
what kinda roofing, steel or aluminum? we have aluminum on our barn, it was nailed on with aluminum nails that are driven thru the tops or the corrogations, the nails have rubber washers on them to help seal, but the washers are mostly deteriorated by now. i just built a small shed for my goats, i put a used piece of aluminum roofing on the top, i used 2 1/2 inch deck screws and just sealed the heads with silicone, since the shed was small it wasnt worth bothering to get the proper screws, and there were old nail holes in the roofing that i had to silicone over anyhow so it worked out pretty good. if i were to put on alot of metal roofing i would use the proper screws rather than the nails, since the nails work loose eventualy

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tlak

10-10-2003 12:14:12




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 Re: O.T.-Less a roofer than a mechanic in reply to Kajun, 10-10-2003 11:05:36  
third party image

everything you wanted to know about corrugated roofing. For what little metal work Ive done it looks like nailing on the high would be hard.

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