BeadBoard

Bob Haskett

I am finish a roof over my deck this weekend. It is 16x12 deck. The roof is a shed style roof with 2x6 rafters 24" spacing. I want to finish the inside of the roof with some plybead and recessed lighting. The plybead is sold at the big box stores in 4x8 sheets. What do I need to do when installing it to keep it from looking wavy? Do I need to install plywood over the rafters before putting the plybead on? I would like to avoid that if possible for weight and financial reasons.

oh'mike

Where are you located? Is this porch heated?

Any plywood bead board I have seen will fall apart if installed outside--even if it is on the underside of a porch roof---

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jod78

I'd put a couple sheets up and see how it looks. If you feel it's sagging a little, you can always cut some 24" pieces of 2X4 and nail them up between the rafters wherever you feel they are needed. That'd be way easier and cheaper than putting up plywood first.

regarding the post above...maybe you could buy the engineered bead board that will not rot and fall apart like the wood variety, if that's going to be an issue.

Bob Haskett

I am in TN. The porch is not heated. It is just a roof over a deck. Not screened in or anything.

What if you seal and stain the beadboard?

ratherbefishin'

If by "plybead" you mean Georgia-Pacific Ply-Bead, just follow the instructions at GP's website and you'll be fine. The only thing I do differently is seal the backside before installing, but that's just a precaution because of the humidity here.
If you're looking at any other bead panel product, I'm with Mike, don't do it.

rditz

i would strap the ceiling with 1x3" at 16" OC perpendicular to the ceiling rafters/joists. then install your sheeting perpendicular to the strapping.

this will give you more nailing surfaces and prevent sagging.

what size of pots are you planning, because their weight might also pull down and create sagging..

rod

Bob Haskett

Pots? As in the recessed lighting? They will be attached to the rafters no?

rditz

Yes.. recessed lighting...

Bob Haskett

Sorry, new to all this.

Was thinking four 5 or 6 inch lights with the rafter side mounted cans.

mrgins

Not familiar with GP's Ply Bead, but I wouldn't use anything less than a 3/8" plywood product (T-111) on an open porch like that no matter how much strapping you put under it. Have you also thought of other products, vinyl etc?

Bob Haskett

I am open to other products if u can find them locally.

Bob Haskett

I am open to other products if I can find them locally.

oh'mike

The product that Mr.Gins was talking about is T-111 siding--4x8 and 4x9 foot sheets 1/2 inch thick exterior --available at any lumber yard or Big box store.

You may be out of luck with the can lights---a 2x6 rafter only was 5 1/4 inches of depth--
Check the height of the cans in the store---I think that even the shorties will be to tall.--Mike--

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Bob Haskett

The housing that holds the lights is roughly 4.75" deep and has connections on the side not the top, I should be OK I think.