Why a Plywood Deck is Essential for Composition Shingle Roofs in Brea, California

When it comes to installing a new roof on your Brea, California home, there’s more to the process than simply choosing the right shingles. The foundation of any quality roof is the decking beneath the shingles. In this blog post, we’ll discuss the importance of adding a plywood deck when installing composition shingle roofs and how it can protect your Brea home from the elements.

 A newly installed plywood deck on a residential roof, providing a strong and even surface for the upcoming composition shingle installation

Plywood deck on a residential roof, providing a strong and even surface for the upcoming composition shingle installation


  1. Structural Support and Durability

A plywood deck is crucial for providing the necessary support for your composition shingle roof. Plywood, made from thin layers of wood veneer bonded together, is a durable and strong material that can withstand the weight of the shingles and any external pressures, such as wind and snow loads. According to the International Code Council (ICC), proper deck construction is required to meet building code standards and ensure the safety and stability of your home. This is particularly important in Brea, where homes need to be built to withstand the unique weather conditions of Southern California.

  1. Improved Weather Resistance in Brea

Brea, California, experiences various weather conditions throughout the year, from hot and dry summers to occasional winter rainstorms. A solid plywood deck helps protect your home against these weather elements by preventing moisture penetration and providing a barrier against wind uplift. The American Plywood Association (APA) explains that plywood offers superior performance in resisting moisture and maintaining its structural integrity compared to other decking materials. With Brea’s climate, having a deck that can withstand these conditions is essential for maintaining your home’s overall structural integrity.

  1. Enhanced Energy Efficiency for Brea Homes

When properly installed, a plywood deck acts as an additional layer of insulation for your home. This added insulation helps regulate indoor temperatures, leading to increased energy efficiency and potentially lowering your utility bills. The U.S. Department of Energy emphasizes the importance of proper roof installation for energy efficiency and overall home comfort. For homeowners in Brea, where temperatures can soar during the summer months, having a well-insulated roof can make a significant difference in maintaining a comfortable living environment.

  1. Extended Shingle Life in Brea’s Climate

A plywood deck provides a flat, uniform surface for the installation of composition shingle roofs, ensuring the shingles lay flat and adhere correctly. A smooth, properly installed deck can extend the life of your shingles by preventing warping, buckling, or tearing, which can lead to premature roof failure. The Asphalt Roofing Manufacturers Association (ARMA) highlights the importance of a well-built roof deck in promoting the longevity of asphalt shingle roofs. With Brea’s unique climate and weather conditions, investing in a quality deck can help ensure your roof lasts for years to come.


Investing in a plywood deck when installing a composition shingle roof is a crucial step in ensuring the longevity and protection of your Brea, California home. At McCormack Roofing, we understand the importance of a properly constructed roof, and we’re here to help you make the best choice for your home. Contact us today for a free consultation and let our experienced team guide you through the process of selecting and installing the perfect roof for your Brea home.

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