Residential Flooring

T Strand Osb T&G Subfloor Pro T Strand Osb T&G Subfloor

At Tolko, we’ve invested time and resources into reengineering our APA-rated Sturd-I-Floor products. Moisture-resistant and edge-sealed, Tolko T-STRAND™ T&G OSB subfloor resists warping and stays true longer. Tolko T-STRAND™ OSB panels are improved, warranted and ready to perform.

Available in: 

Available with Zinc Borate Protection

Tolko has certification from APA to produce OSB panels protected with Zinc Borate.  This treatment protects the panel from termites, fungal decay, and mold. We add it to the mixture before the panels are pressed to create consistent protection throughout every inch of the panel. 

These products are treated to a level equivalent to that specified in American Wood Protection Association (AWPA) Standard T1-14 and to that specified as Hazard Class H2 in the Australia - New Zealand standards AS/NZS 1604.2:2012.

View our Zinc Borate Fact Sheet to learn more about the benefits of this treatment.

Thicknesses and Sizes

Performance Categories * Lengths Widths
19/32", 23/32", 7/8", 1-1/8" 95-7/8" (8’), 119-7/8" (10'), 143-7/8" (12') 47-7/8" (4')

* 7/8” and 1-1/8” available on special order only


T-STRAND Pro OSB T&G Subfloor: No-nonsense transferable, 365-day no-sand, 50-year limited warranty

T-STRAND OSB T&G Subfloor: 25-year transferable warranty against delamination

Warranty 50 Year Red Warranty 25 Year Blue

Proper Panel Spacing

It is important to properly space OSB and Plywood panels to allow for natural expansion as they adjust to the moisture in the environment.  APA the Engineered Wood Association recommends 1/8-inch space between panels for a smooth and secure surface without buckling. For more information view following resources from APA:

Easy to do business with. Product quality and consistency. On-time shipping. This is what Tolko is built on.