Elite Home Exteriors NW

LP rot siding

LP Louisiana Pacific Wood Siding

LP Wood Engineered Siding knot Logo

LP Wood Siding –

Wood Siding by the name of “LP” or “Louisiana Pacific” engineered wood siding is known by the class action lawsuit that started in the 1990 – 1996. LP carried a 25 year warranty and began to rot pre maturely, discoloring, disintegrating and even growing fungi. This style of wood siding is OSB (Chunks of wood glued together) with a wood grain pattern.

Believe it or not LP SmartSide is still in business! We at Elite Home Exteriors NW re-side projects are 90% replacement of LP or wood siding.

Cons to LP Siding-

  • Rots
  • Attracts wood boring insects
  • Swells
  • Cracks
  • Flammable
  • High Maintenance
  • Must paint every 4-6 years

Louisiana-Pacific Corporation (LP) has faced lawsuits related to its siding products, particularly its InnerSeal® siding, which was manufactured between 1985 and 1996. The lawsuits primarily stemmed from allegations that the siding was prone to premature failure, including warping, cracking, and delamination, leading to water intrusion and damage to homes.

The main reasons for the lawsuits against LP siding include:

  1. Product Defects: Homeowners alleged that LP’s InnerSeal® siding had manufacturing defects that rendered it unfit for its intended purpose. The siding was purportedly prone to moisture absorption, which could lead to various problems such as rotting, mold growth, and structural damage to homes.
  2. Improper Installation: Some lawsuits claimed that LP siding failures were exacerbated by improper installation practices. While LP maintained that its siding products were designed to be installed according to industry standards, improper installation could compromise the performance and longevity of the siding.
  3. Warranty Claims: Homeowners who experienced problems with LP siding sought recourse through warranty claims, alleging that LP had breached its warranties by selling defective products. Disputes arose over the extent of LP’s responsibility for covering repair or replacement costs associated with damaged siding.
  4. Class Action Lawsuits: Some lawsuits against LP siding were filed as class action lawsuits, representing groups of homeowners who had experienced similar issues with their siding. Class action lawsuits allowed plaintiffs to pursue legal action collectively, consolidating their claims and resources.

LP has faced various legal actions and settlements related to its siding products over the years. Settlements often involve compensation for affected homeowners, reimbursement of repair or replacement costs, and other remedies.

It’s important to note that LP has introduced newer siding products and made improvements to its manufacturing processes over time. However, the lawsuits related to LP siding products serve as a reminder of the importance of proper product testing, quality control, and transparent communication with consumers to ensure the reliability and safety of building materials.

LP Wood Siding ROT!


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WA 360-605-9030

OR 971-978-8775

LP Wood Siding Rot Swelling Cracking

Posted on by Elite Home Exteriors NW
LP Louisiana Pacific Wood Siding

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