The subfloor consists of sheet materials that are nailed or screwed to the joists to.
Osb floor decking.
When a roofless partially built structure takes on water the plywood or osb used for floor decking can absorb water swell delaminate and require sanding or replacement before finish flooring.
23 32 cat ps2 10 tongue and groove osb subfloor application as 4 x 8.
A typical wood framed residential flooring system is more complicated than you think.
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Osb is cheaper than plywood by about 3 to 5 per panel.
Item 12218 model 637367.
Oriented strand board osb is a material with oriented strand board osb is a material with high mechanical properties that make it particularly suitable for load bearing applications in construction.
Osb when exposed to the weather will eventually swell and bubble up minor instances of bubbling can be sanded but for the most part the osb is irreparable and should be replaced.
A viable alternative to plywood this osb board is engineered to prevent any cupping warping or splitting.
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However plywood subfloors are stiffer than osb by about 10.