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Old 11-10-2012, 11:33 AM   #1
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Question About OSB

Hello! As I begin my first structural project (shed) this will also be my first time using OSB. I've noticed on OSB that it has a shiny side and a dull side. Which side goes out and which side faces the inside of the building? Sorry for the lame newbie question but thank you for your help!



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Old 11-10-2012, 12:28 PM   #2
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Rough side (with the lines) out.

Make sure you get it coverd quick....I does not like to be kept wet for a long time....edges will swell.

Also....make sure the bottom edge is at lest 4" above earth ground....2" above concrete.

Any wood touching concrete should be pressure treated.....and make sure you use galv nails nailing anything into the PT wood.


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Old 11-10-2012, 12:30 PM   #3
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The rough side goes out. That side also has lines on it that should correspond with the stud layout for nailing.
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Old 11-10-2012, 12:33 PM   #4
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Since this is a shed, I would put a coat of simple sealer on the inside surface too. As mentioned, make sure you get something to protect the exterior on as soon as possible. OSB does not like water and moisture.

And as mentioned, keep it off the ground.
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Old 11-10-2012, 03:55 PM   #5
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Excellent, thank you!
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Old 11-10-2012, 04:00 PM   #6
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textured side goes out for saftey reasons.. when framing walls on the ground it gives traction so you dont slip. same goes for roofs, only advise though dont buy the osb from home depot for a roof... its nowhere near as grippy as weyerhauser osb
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Old 11-10-2012, 09:01 PM   #7
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The shiny side is waxed during manufacturing to keep it from sticking to the press.

Remember to gap it (printed on each sheet);

Recommend 8" above grade;

OSB won't take moisture;

If you skip the WRB, or; "how to fix it later":

Use Tyvek rather than Typar to dry 3 times quicker when it does get wet; Fig.15;

Not if you live on the Gulf Coast;



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