It's Official OSB Leaks Air

[mbtech]

Well just like the title says OSB Plywood Leaks air.

We pressurized the box looking for leaks took some some and water at any given part of the board and soap bubbles.

So if any of you are having problems with osb boxes not holding a vacuum you know why now.


So now I gotta find a paint to paint the box to seal the wood airtight . Any Ideas?

I will never build another box out of osb just Plywood only.

I vote for this to be a sticky.
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Amaizablaze
4100 Upstairs

Bixby
MaxFire 115 Basement

[Mary B]

Any good latex should help seal it. Mat take multiple coats though.
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Never trust a skinny chef
Bixby 115
Outdoor wood fired BBQ pit

[steadywoman]

I agree on the latex, Mary, but make it an acrylic latex semi-gloss or eggshell finish, mbtech. Do yourself a favor and prime it first. The acrylic will form a "skin", making the OSB airtight. The primer will make sure the paint bonds...my preference on primer would be H2Oil Base primer by Bulls Eye. Since it's just corn/pellet storage and finish isn't critical, use a cheap throw away brush. The primer can says it cleans up with soap and water...it lies, mineral spirits first...then soap and water if it's a good brush. That's why I recommend a throw away cheapie. You can roll both the primer and paint, just throw the roller covers away,
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Bixby 110
Happily burning since 11-05

[SidecarFlip]

MDF is a whole lot better, stronger and more expensive, but cheaper than plywood. MDF don't pass air either.
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Flipmeisters Specialty Products, LLC
www.flipmeisters.com

[mbtech]

[chad s]

That's interesting. I was trying to figure out why my osb bin did not hold vacuum as well as it did last year. Might have to coat it with some polyurethane and see what happens.

[mbtech]

So where do I buy the MDF? is that the same thing as CDX?
_________________
Amaizablaze
4100 Upstairs

Bixby
MaxFire 115 Basement

[steadywoman]

Congrats on the clown, chad...
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Bixby 110
Happily burning since 11-05

[Jed77]

[SidecarFlip]

CDX is plywood, that refers to the grade. Grade C-D Xterior There is treated CDX .40 Retention as well. That's for moisture contact, like foundation walls and skirting. I tend to use BCX which has a much better surface with less roughness.

MDF is Medium Density Fiberboard. It's smooth finished on both sides, dense and structurally strong. OSB is oriented Strand Board, cheap, not very strong and obviously not vacuum tight plus it can be formed with formaldehyde glue.
_________________
Flipmeisters Specialty Products, LLC
www.flipmeisters.com

[Jed77]

I think MDF also has formaldehyde too
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LMF 100k Furnace
*Variable Speed Combustion Fan
*Fresh Air Intake

Mobile Corn Vac

[mbtech]

Local lumber yard Home Depot, Lowes, Menards?

Or do I have to go to a mom and pop lumber yard?
_________________
Amaizablaze
4100 Upstairs

Bixby
MaxFire 115 Basement

[BRB]

ULTIMA will seal what ever you need it to seal. You can buy it at Menards in the paint dept by the caulk. It comes in qt size can for around 9 bucks I think. I have used it on 3 airtight bins with no problems. I would venture to say your leaks are around the seams. Follow the label on the can and all of your leaks should be taken care of.
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Countryside 3500p in the basement & Countryside 3500p in the garage

Integrity is doing the right thing even if no one is looking.

[SidecarFlip]

[Binford]

What about using melamine?