So, unsurprisingly, when OSB came on the scene as an alternative to plywood, detractors were quick to point out its deficiencies. Which is the better option, plywood vs. Well, each has their own strengths and weaknesses when used as exposed decking or subflooring.
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 can be installed.
To address these water issues, OSB and plywood manufacturers are refining their products. The fix is to use water-repellent or water-resistant products in place of ordinary plywood or OSB. Essentially an enhanced OSB material, AdvanTech uses a resin integrated with the wood to resist water absorption and reduce the swelling that plagued the original OSB subflooring. Huber even offers a year warranty on AdvanTech. Plywood sheathing is typically more expensive than OSB and is constructed using plies.
The plies are constructed when sheets of veneer are cross-laminated and glued together using a hot-press. The grain of each layer of veneer is positioned in a perpendicular direction to the adjacent layer. When exposed to moisture, plywood will get saturated much more quickly than OSB but it does dry out more quickly. Plywood is not prone to edge swelling like OSB. As you can see, both OSB and plywood sheathing are good options for the construction of structural sub-floors.
Both are strong, durable and long-lasting. Wood scientists agree that the structural performance of plywood and OSB are equivalent. Sub-floors are actually constructed of either OSB or plywood sheathing, and rest on floor joists. Sturd-I-Floor is designed to be used with the APA Glued Floor System, which uses an adhesive in addition to nails to help eliminate squeaks and nail popping, as well as increase floor stiffness.
Sturd-I-Floor can be manufactured with square edges or with tongue-and-groove edges. Because use of tongue-and-groove panels eliminates the need for installation of blocking along long panel edges, floor construction moves more quickly. The system components are specifically designed for carpet and pad installation to help keep the floor quiet, making Sturd-I-Floor an ideal solution for multifamily buildings.
Span rating is the maximum recommended center-to-center spacing in inches of the supports, such as I-joists, that the panels will be attached to. The most common span ratings for Sturd-I-Floor are 20 oc on center , 24 oc, and 48 oc. Due to the wide variety of applications for Rated Sheathing, it has a different system for span ratings. For general information regarding engineered wood products, their specifications, and their applications, contact the specialists at the APA Help Desk. Email Password.
Single Floor Sturd-I-Floor vs.
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