Do I need to cover a WPC pergola in winter?
Jul 31, 2025
As a supplier of WPC (Wood-Plastic Composite) pergolas, I often get asked by customers whether they need to cover their WPC pergolas in winter. This is a crucial question, as the answer can significantly impact the lifespan and appearance of the pergola. In this blog post, I'll delve into the factors to consider when deciding whether to cover your WPC pergola during the cold winter months.
Understanding WPC Pergolas
Before we discuss winter protection, let's briefly understand what WPC pergolas are. WPC is a composite material made from a blend of wood fibers and plastic polymers. This combination offers the aesthetic appeal of wood with the durability and low - maintenance benefits of plastic. WPC pergolas come in various styles, such as the WPC Roofed Pergola, which provides more protection from the elements, and the Open Top Pergola, which offers a more open - air experience. Our WPC Pergola For Exterior is designed to enhance outdoor living spaces, whether it's a backyard, patio, or garden.
Advantages of Covering a WPC Pergola in Winter
Protection from Snow and Ice
One of the primary reasons to cover a WPC pergola in winter is to protect it from heavy snow and ice. In regions with significant snowfall, the weight of accumulated snow can put stress on the pergola structure. If the snow is not removed promptly, it can lead to bending or even breaking of the pergola components. Ice can also cause damage, especially when it forms on the surface of the pergola and then expands as it freezes. A cover can act as a barrier, preventing snow and ice from directly contacting the pergola and reducing the risk of structural damage.
Shielding from UV Rays
Although winter sunlight may seem less intense, UV rays can still be harmful to WPC materials. Over time, prolonged exposure to UV rays can cause the color of the WPC pergola to fade and the material to become brittle. A cover can block these UV rays, helping to maintain the pergola's original color and structural integrity.


Reducing Moisture Damage
Winter often brings high humidity and precipitation. Moisture can seep into the WPC material, leading to issues such as mold and mildew growth. A cover can prevent excessive moisture from reaching the pergola, reducing the likelihood of mold and mildew formation. Additionally, it can protect the pergola from rain and sleet, which can cause water stains and other cosmetic damage.
Situations Where Covering May Not Be Necessary
Mild Winter Climates
In areas with mild winters, where there is little to no snowfall and the temperatures rarely drop below freezing, covering the WPC pergola may not be essential. If the climate is relatively dry and the sunlight is not overly intense during winter, the pergola can withstand the elements without a cover. For example, in some coastal regions, the mild winter conditions pose minimal risks to the WPC pergola.
High - Quality WPC Materials
If you have invested in high - quality WPC pergolas, they may be more resistant to the winter elements. Some advanced WPC materials are specifically engineered to be more durable, with enhanced UV protection and moisture resistance. In such cases, the need for a cover may be reduced, although it still provides an extra layer of protection.
Types of Covers for WPC Pergolas
Tarps
Tarps are a popular and cost - effective option for covering WPC pergolas. They come in various sizes and materials, such as polyethylene, which is waterproof and UV - resistant. Tarps can be easily secured to the pergola using ropes or bungee cords. However, they may not provide the most aesthetically pleasing look, and they need to be properly tightened to prevent flapping in the wind.
Custom - Made Covers
Custom - made covers are designed to fit the specific dimensions and style of your WPC pergola. They are usually made from high - quality fabrics, such as polyester or vinyl, which offer better protection and a more tailored appearance. Custom covers can be more expensive than tarps, but they provide a more professional and long - lasting solution.
How to Properly Cover a WPC Pergola
Clean the Pergola First
Before covering the pergola, it's important to clean it thoroughly. Remove any dirt, debris, leaves, or other organic matter that may have accumulated on the surface. This helps prevent the growth of mold and mildew under the cover. You can use a mild soap and water solution and a soft brush to clean the pergola.
Secure the Cover Properly
Once the pergola is clean and dry, carefully place the cover over it. Make sure the cover is centered and fully covers the pergola. Use ropes, bungee cords, or clips to secure the cover tightly to the pergola. This prevents the cover from being blown off by strong winds. Check the cover periodically during the winter to ensure it remains secure.
Maintenance Tips for Covered WPC Pergolas
Regular Inspections
Even with a cover, it's important to inspect the WPC pergola regularly during winter. Check for any signs of damage, such as tears in the cover or stress on the pergola structure. Look for areas where moisture may be accumulating under the cover, as this can lead to problems.
Snow Removal
If there is significant snowfall, it's a good idea to remove the snow from the cover. Use a soft broom or a snow rake to gently remove the snow. This reduces the weight on the cover and the pergola, preventing potential damage.
Conclusion
In conclusion, whether you need to cover your WPC pergola in winter depends on several factors, including the climate in your area, the quality of the WPC material, and your personal preferences. While covering the pergola offers many benefits, such as protection from snow, ice, UV rays, and moisture, it may not be necessary in mild winter climates or if you have a high - quality, durable pergola.
If you're considering purchasing a WPC pergola or need more information on winter protection, we're here to help. Our team of experts can provide you with detailed advice based on your specific situation. We offer a wide range of WPC pergolas, including WPC Roofed Pergola, Open Top Pergola, and WPC Pergola For Exterior. Contact us to start a discussion about your outdoor living needs and explore our product offerings.
References
- "Wood - Plastic Composites: Science, Technology, and Applications" by Ashok K. Mohanty, Manjusri Misra, and Lawrence T. Drzal
- "Outdoor Living Spaces: Design and Construction" by Rick Darke
