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can a roof over be done over felt?

2K views 12 replies 11 participants last post by  AndyWRS 
#1 ·
My roof is ROTTEN and I have a limited amount to work with. All the plywood on the roof has to be replaced, that's easy enough to do but I want to do a roof over vs laying out shingles because I also have limited amount of manpower. Can I do a roofover just felt or would I have to put rolled roofing over the felt BEFORE doing the roofover.
 
#6 · (Edited)
clarification

the ROOF OVER I meant involves furring strips and a corrugated roofing material not roofing shingles which was stated. so....
1.) remove and replace plywood. not saving shingles.
2.) put roofing felt down.
3.) placing furring strips down. (some people say use them some say no. I'd rather but.......)
4.) putting down corrugated roofing material. or a metal roofing material
I'm sorry I can't get more simplistic than that.
Does that help?
I have no choice I have to do this myself I literally can't afford to have someone do it so thanks for the help. If i state things wrong read between the lines and I have watched people do it but never done it myself so you can call me a nit wit but ya gotta do whatcha gotta do
 
#9 ·
OK I think I get you now. Your first post said nothing about metal or corrugated whatsoever, so copping a haughty attitude is not warranted.

I would not recommend this type of roof for your home, as you will probably get some leaks now and then but if it is for a chicken coop or shed or something like that then it would be OK.

1. Re-Sheathe with plywood.
2. Install ASTM D-226, Type 2 (No. 30) Felt. Make sure the felt has the ASTM number. side lap 3 inches and end lap 6 inches. I would put mastic in the end laps.
3. Install furring strips so they fall in the ribs. About 1 foot on center.
4. Fasten panels into top of ribs with No. 14 HWH self tapping screws with EPDM sealing washers. Side lap 2 ribs with sealant, end lap 6 inches.
 
#13 ·
In lieu of metal why not do comp, it is easier to install for the diy inclined and cheaper and easier to install than metal. DIY is great for a lot of things, but i would not be risking a DIY job on a metal roof, your just asking for problems. We havent seen your roof but generally Metal is not DIY. So unless your roof is two sides, no hips no valley and no penatrations :)laughing:) Comp is the smart move...or hire a metal roofer.
 
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