LP TopNotch Sub-Flooring

LP® TopNotch® Sub-Flooring features a line of performance OSB sub-flooring available in three options to fit any building project.

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LP TopNotch Sub-Flooring Benefits

LP® TopNotch® Sub-Flooring features excellent strength and stiffness, and is available in three performance levels: 250, 350 and 450.

250:

  • Performance: Excellent strength and stiffness for commodity sub-flooring.
  • Easy Installation: Self-spacing tongue and groove design speeds installation.
  • Innovation: Designed for optimum performance in a commodity product.
  • RainChannel Technology: Unique RainChannel notch system to help drain rainwater away during construction.
  • Sustainability: Wood sourced through programs certified under the Sustainable Forestry Initiative®.
  • 25-Year Transferable Limited Warranty: Products backed by long-term warranties so you can build with confidence.

350:

  • Performance: Premium strength, stiffness and moisture resistance.
  • Easy Installation: Self-spacing tongue and groove design speeds installation.
  • Innovation: Designed for optimum moisture resistance.
  • RainChannel Technology: Unique RainChannel notch system to help drain rainwater away during construction.
  • Sustainability: Wood sourced through programs certified under the Sustainable Forestry Initiative®.
  • 50-Year Transferable Limited Warranty with 100-Day No Sand Warranty: Products backed by long-term warranties so you can build with confidence.

450:

  • Performance: Maximum strength and stiffness.
  • Easy Installation: Self-spacing tongue and groove design speeds installation.
  • Innovative: Designed for optimum fastener retention.
  • RainChannel Technology: Unique RainChannel notch system to help drain rainwater away during construction.
  • Sustainable: Wood sourced through programs certified under the Sustainable Forestry Initiative®.
  • 50-year Transferable Limited Warranty with 200-Day No Sand Warranty: Backed by the best warranty in the LP TopNotch Sub-Flooring series so you can build with confidence.

How It’s Made

LP® TopNotch® Sub-Flooring is manufactured by the leader in strand technology for a flat, strong and sturdy floor.

  • Rectangular wood strands blended with thermal-set, waterproof adhesives are arranged in cross-directional layers and bonded together under extreme pressure.
  • Notches cut into the panels contribute to RainChannel technology.
  • LP TopNotch Sub-Flooring 350 and 450 product panels are surface sanded.
  • Moisture-resistant edge sealant is applied to all LP TopNotch products.

Product Specifications

  • Available performance categories from 19/32 to 1-1/8*
  • Can be used for residential and light commercial applications
  • LP TopNotch Sub-Flooring panels are certified by the APA – The Engineered Wood Association and are manufactured in conformance with U.S. Voluntary Product Standard PS2.
  • Additional information may be found in specific LP product literature and in literature from the APA, whose stamp of quality assurance appears on rated LP OSB products. You may contact LP at (800) 648-6893. The APA publications desk number is (253) 565-6600 and their extensive literature is available at apawood.org.
  • Consider our other OSB specialty sheathing products designed for wall applications (LP OSB Sheathing, LP LongLength and LP LongLength XL) and roof applications (LP TechShield Radiant Barrier Sheathing).

*Performance category replaces the fractional nominal thickness used in PS2. The Performance Category is consistent with the panel thickness used in the U.S. model building codes.

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LP TopNotch Sub-Flooring

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How Is It Made: LP TopNotch Sub-Flooring

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