Lathe metal roofing?

Stan ETenn

We're ready to recover our roof at our church. We're getting different opinion concerning whether to lathe under the 29 gauge metal roofing we want to install. One wants to strip the shingle roofing and refelt and then install the metal roofing. Another wants to strip or lathe with 1" X 4" 's and then screw down the metal roofing. We'd appreciate any advice on this project. Thanks

jmorgan

29 gauge is too light. I never see anything less than 26 guage or 24 gauge over supports. I'm sure that if metal this thin is installed over 1x4's it will bend and deform. The hinner the matal, the beeter the deck surface has to be. The metal roofing mfr's have tables listing the approved spans for supports for all of the guages & profiles they offer. AEP-Span, MBCI, Berridge, IMSA,& Metal Sales are some companies. Type "metal roofing" into Google.
Jim

Teetorbilt

I agree with jm, 29 ga is too light for almost anything and oilcans even on solid decking.

Stan ETenn

Whatever the standard gauge steel roofing on the latest houses and churches is what we will be using. It's usually spanned 18" to 24". Thanks

johnboy52

What type of metal roof are you going to installing, does it have a name, like pro panel or rugud rib? Is it a standing seam type or are the panels 3ft. wide, with small ribs spaced aprox. 9" apart. It matters...

Stan ETenn

It's the 3ft. panels. They have the 25 yr. warrenty. With the steep fall on our roof I think they will last much longer. I think it's important to be sure they are installed right.

johnboy52

that type of metal roof is usally sold in 29 gauge, you can get it in 26 gauge if you feel it's worth it. You must tear off the roof on now, even though the sales people say you don't have to. You must have solid decking. I've installed plenty of these roofs mostly in the mountains, on cabins, and summer homes. Their very popular, and come in many colors. Ther are some tricks to know installing this roof, like you must take every nail out that will not lay flat, after you tear off the old roof, as this roof will transfer any bump right through, and you will see it, especialy on a steep pitch. That means no cap nails used on the paper either, you can only use small stapels to install the paper, (hammer tacks), or you will see every nail! The screw pattern is every 9" across and every row is every 2ft. up-follow me? Look at where the screws are to be installed, There is a sheet showing screw placement. The paper you use had better be 30lb type 2 (heavy)

johnboy52

I can help you more on the installation of this type of roof, if you wish e-mail me and use your e-mail so I can get back to you. If this roof is installed correctly on a step pitch it will work just fine.

AaronB

I hope it isnt the trapezoid panel like on metal buildings.....that stuff is horrible looking.

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