Metal roofs

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Can't seem to find the message I posted. Does anyone know how a tin roof can get put on a round building? I've seen round silos and barns with tin roofs, but I guess you would have the cut the strips more narrow at the peak of the roof?? Can someone answer this?

-- JC (survivors00@hotmail.com), February 14, 2001

Answers

You original thread is still on the current list. About in the middle of the pack. Just do a control F, then search on metal.

-- Ken S. in WC TN (scharabo@aol.com), February 14, 2001.

I've never done it, but have planned on having a turret-type round room at one corner of my house so have thought a lot about it. This is how I figured we'd do it: Yes, cut the metal sheets tapered at the top (wait 'til you get the frame done so you can get accurate measurements) and attach them flat on a hexagonally or octagonally shaped frame that's pretty steep and extends over the edges of the round walls with a foot or so of soffit atleast. Attach flashing or ridge cap along all the seams with generous pooky below.

Anyone else know how better?

-- Wingnut (wingnut@moment.net), February 14, 2001.


While we are on the subject of metal roofs---is there any one that can tell me how practical it is for a competent do it yourselfer to do a standing seam metal roof? Is there any special equipment needed to make the seams? Thanks.

-- Notforprint (Not@thekeyboard.com), February 14, 2001.

Don't know diddly about the seams, but a required piece of equipment for most metal roofing would be a friend. DH was putting one on by himself once, throwing the pieces up onto the roof and then following them up on a ladder (no other really good way to do it alone) and was nearly decapitated when he heard a rumble, peeked over the edge of the roof and just did manage to duck his head as the last piece up, caught by a breeze, came flying edge first over the eave. Talk about a job left standing! Didn't go near the shed until he had someone to control the panels for him!

-- Soni (thomkilroy@hotmail.com), February 14, 2001.

JC: I've never done it but if I were to attempt it heres how I'd do it. Assuming your'e talking about a circular bldg start by determining the diameter of the bldg, then the circumference. For example if C=99' then you'd wanna cut enuf "pie" shaped wedged panels to accomodate the 99'. Lets just say that you'd cut 33pcs, 3' at the wide end of the "pie" wedge. Now if the roof is gonna be a cone(with a round base) then the length of the "pie" wedge would approx. determine the height of the cone. You'd have to allow an additional 4" on the width dimensions to accomodate the forming of a standing seam at a sheet metal shop. You'd still wind up with a pointy piece when it was done but the flat piece before forming the seam would be 4"wide at the "point" and 3'4" at the base.

Now if you're talking a round roof, like seen on silos, I'd try it the same way but now you'd replace the dimension for the "height" of the cone with the circumference divided by four. That way the pieces would meet in the middle of the top of the "dome" roof and the "dome would be hemispherical. In the case of the dome I don't know if the standing seam would accomodate that much of a curve without kinking or not nor do I know how I'd go about making the framwork for such a roof. Good luck. It sounds like a tricky project.

-- john leake (natlivent@pcpros.net), February 14, 2001.



This Can be a little tricky. You will need to have access to a sheetmetal shop that has a 10' sheetmetal brake, hopefully the distance from eve to ridge is less than 10', however longer brakes are available. Take the circumfrance of the top and divide it by say 10, so if the circumfrance at the top is 5' divide that by 10 and you get .5 which is 6 inches. Then take the circumfrance around the eve and divide it by 10 also, say the circufrance at the eve is 15' divide that by 10 and you get 1.5 which is 18 inches. Now measure the distance between eve and ridge whi we'll say 10'. So now you know what you need, 10 ea panels tapered from 18" to 6" in ten feet. You may have to play with the numbers a bit but keep the widest dimansion smaller than 18 inches and design a panel with concealed fasteners. IF the top goes to nothing then make your panels go to nothing. You will just divide the circumfrance at the eve by what ever number you come up with and go to 0 inches at the top.

-- Ron (Dawn_Ward@email.msn.com), April 02, 2002.

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