Plywood for Porch Ceiling Question

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Old 08-25-13, 01:55 PM
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Plywood for Porch Ceiling Question

I've got a front porch ceiling with plywood with old chipping paint. I want to just put new plywood up against the old and use battens on the seems. I thought about just using luan, but I know it won't hold up.

What kind of plywood should I use? All I need is 1/4" - 3/8". Would finish nails be enough? Should I use construction adhesive too?

Thanks.
 
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Old 08-25-13, 02:05 PM
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Why would you want to go back with plywood?
There's a whole lot of better options.
There's lots of different style beaded vinyl strips that installed sort of like hardwood flooring.
Beaded vinyl soffit materials.
That look like real wood after installed and never needs painting.
Soffit - Vinyl Siding & Polymer Shakes - CertainTeed
 
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Old 08-25-13, 02:19 PM
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I thought about doing beadboard or something similar, but the cost was significantly more. I basically just want to repaint with a nicer surface.
 
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Old 08-25-13, 04:04 PM
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SHEETROCK® Brand Exterior Gypsum Ceiling Board. This will give you a nice ceiling.
 
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Old 08-26-13, 04:43 AM
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Although I've painted a lot of it, I'm not fond of using drywall on exterior porch ceilings. If not kept well painted it will deteriorate over time. I used 3/8" beadboard plywood on my front porch ceiling. It's nailed directly to the joists that are on 2' centers. To prevent sag, I added 2x4 nailers between the ceiling joists. I stained/poly'd the ceiling and it still looks good 10-12 yrs later.

About the only way I'd trust 1/4" plywood would be with a lot of adhesive between the joists and even then you are trusting the failing paint not to come loose and let the thin plywood sag
 
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