plywood and osb together for a door?

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Old 04-23-16, 06:07 AM
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plywood and osb together for a door?

Can I take a piece of 5/8" osb and glue (with heavy duty liquid nails) and screw a sheet of 3/8" plywood to either side paint it and use that for and interior door or will it warp?
 
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Old 04-23-16, 06:17 AM
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I'd skip the OSB and use a 1x frame work to attach the plywood to. Plywood by itself will warp.
Ideally rip lumber down to the right thickness so you can use the edge and not the side of the lumber as it will be stiffer that way.
 
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Old 04-23-16, 06:18 AM
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Not going to work for many reasons.
What would make you think of doing it that way?
Left over materials?
 
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Old 04-23-16, 06:18 AM
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The door will be less than 1" thick. Where will you attach your hinges? What does the door frame look like? No lockset will fit, and you can't drill for a lockset plunger. So basically if it is a door for a playhouse with a rope closure, sure, but for an interior door, not so much. Oh, and yes, it will be unstable.
 
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Old 04-23-16, 06:19 AM
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Sounds alright but will be a heavy door.
 
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Old 04-23-16, 06:24 AM
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A couple things. Interior doors are generally 1 3/8" thick, so if you were to attempt your plan, you would use 3/4 and 5/8. You generally screw hinges to the 1 3/8" side of the door. The sheets would need to face opposite directions, and would probably still warp. Door knobs are made for doors 1 3/8" thick and most often will not work on a thinner door.

Plus, buying an actual door slab would surely be cheaper than buying the plywood and the glue. Unless you live in a shantytown, this is a really poor idea.
 
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Old 04-23-16, 06:57 AM
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according to my math the door would be 1 3/8' thick 5/8 +3/8 + 3/8 =1 3/8 same as a standard interior door. I was going to put 3/8" PLYWOOD ON BOTH SIDES OF THE OSB. I can get 4x4 exterior sheets of 3/8+ (possibly 7/16 but not half inch) plywood (what I'm calling 3/8) for 1.00 a piece from a friend that owns a lumber mill, and I already have the osb. If I didn't have drive 90 miles to the nearest home depot to get a door slab or pay a 89 dollar delivery fee I would have already done that . But if this door will warp If look at other options

Thanks

Jesse
 
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Old 04-23-16, 06:59 AM
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Thickness

5/8 + 3/8 + 3/8 = 11/8 = 1 3/8. OK. Same as post above. I type slowly.
 
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Old 04-23-16, 07:03 AM
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I missed the "sandwich" part. It will be heavy and will not be as stable as a "door".
 
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Old 04-23-16, 07:04 AM
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Plywood only doors almost always warp but when you add dimensional lumber to stiffen it up it will work.
 
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Old 04-23-16, 07:07 AM
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Not wanting to advertise for them, but would not Bayside Lumber carry doors? They are right in Port St Joe
 
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Old 04-23-16, 07:41 AM
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bayside lumber might carry them but they are expensive as hell for building supplies and I have other issues with them. Heavy I want (more mass = more sound isolation) not stable I don't want. Would a 2x2 frame make it stable enough?
 
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Old 04-23-16, 08:34 AM
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How are you going to attach this 2x2 frame? Nailing into the end grain of the plywood won't work. More mass won't reduce sound. You will need to decouple the offending area since sound travels through solid material via vibrations.
 
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Old 04-23-16, 09:49 AM
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2x2s would make the door too thick if it needs to replace an old door otherwise gluing a stapling 1/4" plywood should work ok. add foam panels inside if you need to reduce sound. I've made plywood doors for sheds and such but never for inside a house.
 
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Old 04-23-16, 10:14 AM
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I've made plywood doors for sheds and such but never for inside a house.
Maybe that's the look he's going for.
 
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