10-09-2019, 12:51 PM
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#9
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Yurt Forum Addict
Join Date: Nov 2013
Posts: 2,187
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Re: Piecing together a Colorado yurt
OK I reread your initial post. Do you have OSB subfloor? OSB is wood chips and glue pressed flat. Or plywood subloor? Plywood is no chips. It is peeled sheets of wood turned on a lathe, and at least five plys are glued and pressed together in t@g subloor. Quality subfloor ply also has football shaped inlays that replace knot holes.
OSB ALWAYS has raised edges and seams when installed. Why beats me but it is what is is. Never seen it flat at edges and seams. If OSB subfloor gets real wet or repeatedly wet, those edges and seams become REAL proud of the main body of the sheet. Painting the subfloor with cheap 'oops' gallons from Depot or Lowes is a good away to protect it until the roof is on. That's what I did on my own house because it was me framing it and not a full crew. Repeated wettings from summer rains did zero damage to it.
Sanding OSB with a pro grade disc sander will take that raised area down to level. However you need to be very aware that if the edges and seams are really raised, like 1/4" up from the field, heavy sanding on the edges to level it with the field can get you into the t@g area and destroy the integrity of the joints. That would be a BIG mistake that's why I am discussing it in detail. I don't want you to just blindly leap in there and start cussing me down the road. lol
In new construction, OSB t@g is the subfloor everyone uses nowadays. As a generalization, 'click' laminates go right on top of osb, ridges and all. Nobody but the contaractor I mentioned in earlier post sands the subfloor. Just gitr done is the name of the game.
There's a chance I am misreading something or making a bad guess here. My gut tells me you have osb and that it sat out in the weather and got wet several times. If that's the case and it really is in poor shape, I would sand the piss out of it and recover with additional sheeting, but breaking the joints of the new sheathing in a different spot than the sanded sheets.
Just thinking about your problem. Hope this helps. Good luck.
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