When considering options for your new home or looking at what’s installed on a home you plan to purchase, one material that may show up is LP siding.  This article plans to explain what it is, what were some of the problems it had in the past and how the new and improved materials can be a great choice for your home. 

LP siding quickly became a very popular siding material in the mid 1980s and 1990s. It soon faced several challenges however, that have since been addressed with modern advancements in treatment and manufacturing processes. Let’s explore the issues of older LP InnerSeal siding and how today’s LP SmartSide products have vastly improved to offer homeowners a reliable and easy to install solution.

What is LP Siding?
LP siding is one brand name of engineered wood siding. This is a type of siding made from wood strands or fibers combined with different resins and treatments to resist moisture, fungal decay and insects. These components are compressed and bonded together to create a durable product that mimics the appearance of traditional wood siding but with enhanced performance characteristics. Engineered wood siding comes in different forms and profiles to be used in multiple design needs.  Modern forms of this siding have proven to perform well and are a great choice for many homes.

The Issues with LP Siding in the 1980s and 1990s
Originally known as Louisiana-Pacific Inner-Seal siding, was introduced as a cost-effective alternative to traditional wood and vinyl siding. Despite its initial popularity, the product faced significant issues:

• Moisture Susceptibility: The original LP siding was prone to absorbing moisture, leading to swelling, warping, and eventual deterioration. This was particularly problematic in humid climates or areas with heavy rainfall.
• Fungal Decay: The untreated wood fibers in the original LP siding were vulnerable to fungal decay, which further compromised the structural integrity of the siding.
• Pest Infestation: The siding’s organic material attracted pests, such as termites and carpenter ants, which accelerated damage and reduced the lifespan of the siding.
• Class-Action Lawsuits: These issues led to numerous class-action lawsuits in the 1990s, as homeowners experienced widespread failure of their LP siding. The lawsuits significantly tarnished the product’s reputation. 

Modern LP SmartSide:  Lessons Learned
Recognizing the issues of their InnerSeal products,  Louisiana-Pacific undertook extensive research and development to create a new generation of siding that addresses the flaws of its predecessors. In September of 1997 LP started the SmartSide brand.  Modern SmartSide products are a testament to ongoing effort and learning from past failures to offer numerous advantages over the older versions:

1. Enhanced Durability: Modern LP SmartSide is engineered using advanced resin technologies and wood strands or fibers. The proprietary SmartGuard® process treats each piece to enhance its resistance to moisture, fungal decay, and termites. This significantly improves the siding’s durability and longevity.
2. Improved Moisture Resistance: The SmartGuard® treatment includes zinc borate, which protects against moisture infiltration. Additionally, modern installation guidelines emphasize proper moisture management, including the use of weather-resistant barriers and flashing.
3. Pest Resistance: The incorporation of zinc borate in the SmartGuard® treatment also makes LP SmartSide resistant to pest infestations, addressing a major issue faced by the older siding.
4. Rigorous Testing: LP SmartSide products undergo rigorous testing to ensure they meet high performance standards. They are tested for their ability to withstand extreme weather conditions, impact resistance, and long-term durability.
5. Aesthetic Versatility: LP SmartSide offers a wide variety of styles, textures, and colors, allowing homeowners to achieve the desired look for their home
6. Environmental Considerations: The manufacturing process of LP SmartSide utilizes sustainable materials and practices, making it an eco-friendly choice. 
   
   

No matter what type of siding you choose, proper installation and regular maintenance are crucial to its performance and longevity. Even the most advanced siding materials can fail if not installed correctly or if neglected over time. Following the manufacturer’s installation guidelines, ensuring proper water management, and conducting regular inspections and cleanings can greatly improve the life of any siding material.

Moving Forward
The issues faced by LP siding in the 1980s and 1990s provided valuable lessons that have shaped the development of modern LP SmartSide products. Today, homeowners can benefit from siding that is more durable, resistant to moisture and pests, and aesthetically pleasing. By following proper installation and maintenance practices this siding can protect your home and family for many years to come. 

Purchasing a home with engineered wood siding?

If you think your home might have LP siding, hiring a qualified home inspector can go a long way in helping you understand the siding system used on your home. A professional inspector has the expertise to identify potential issues such as moisture infiltration, pest damage, improper installation, and signs of wear and tear that might not be obvious to an untrained eye. They can also provide valuable insights into the type of siding used, its expected lifespan, and necessary maintenance practices. By having a thorough inspection, homeowners can address problems early, avoid costly repairs, and ensure their siding performs effectively to protect their home.

Want to learn more about LP Siding? Check out this link to read about the pros and cons: https://www.bobvila.com/articles/525-everything-you-need-to-know-about-engineered-siding/