Treated LSL

LP® SolidGuard® LSL is a zinc borate treated product that protects against termites and fungal decay. When used in multi-story buildings, LSL helps mitigate shrinkage and reduces the risk of callbacks.

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LP SolidGuard LSL Benefits

LP® SolidGuard® LSL treated sill plates are manufactured to be straight and more uniform in strength, stiffness and size than traditional lumber. Advantages include:

  • Strength: Provides a full wall plate solution for taller wood-framed buildings.
  • Efficiency: Long lengths make it easy for continuous framing along walls.  
  • Versatility: Available in common traditional lumber sizes and in long lengths.
  • Peace of Mind: Manufactured straight and stays straight, treated throughout with no need to field treat, and is free of knots and other naturally derived defects.
  • Sustainability: LP uses forest management and procurement systems certified to the Sustainable Forestry Initiative® standard.
  • 25-Year Limited Warranty: Products backed by a 25-year limited warranty against termite and fungal decay damage. See complete warranty details for more information.

How It’s Made

The LP® SolidGuard® LSL manufacturing process blends zinc borate throughout the product, eliminating the need for field treatment.

  • Made with sustainably harvested aspen and maple hardwoods for greater strength
  • Treated with zinc borate to resist termite damage and fungal decay
  • Edges and ends are sealed for additional moisture protection

Product Specifications

Available depths: 3-1/2˝, 5-1/2˝
9-1/2˝, 11-1/4˝, 11-7/8˝, 14˝, 16˝, 18˝, 20˝, 22˝, 24˝
Available grades: 1.35E
Custom widths and lengths available upon request
Available in precision end-trimmed lengths upon request
Edges and ends are sealed to reduce swelling

Product Videos

LP SolidGuard LSL at IBS

LP SolidGuard LSL at IBS 2014.