Plywood for Outdoor Use: Weatherproofing and Durability Tips

Plywood is one of the most versatile and handy materials applied in many construction and other DIY applications, both indoors and outdoors. In outdoor applications, plywood sheets need to be given additional care for extended longevity regarding weather conditions. 

Moisture, sun, and temperature will begin to degrade plywood; therefore, proper weatherproofing will extend its life. In this blog, we will discuss a few pointers on how to make plywood strong enough for use outdoors and ways of protecting it from the elements.

Type of Plywood to Use Outdoors

Not all plywood are the same, and that is especially true when taken out to the open. Some types can tolerate harsh environmental conditions:

  • Marine Plywood: This is the marine plywood most advised for outdoor work since they are treated to be resistant to moisture and rot. Marine plywood contains durable hardwood with very few gaps, making it stronger.
  • Exterior Plywood: Much less expensive but intended for use outside. It is treated to resist weather damage, though it does not match the durability of marine plywood.
  • Pressure-Treated Plywood: Chemical treatment has been applied for protection against rotting and insects and fungus. It is a recommended type of plywood for long-term projects that take place outdoors.

The right kind of plywood assures that the material itself will provide foundational strength against outdoor conditions.

Methods of Weatherproofing Plywood

After choosing the suitable plywood, the most important step is that it needs to be weather-proofed. Here are some effective ways of making your plywood moisture and damage resistant.

1. Sealing the Edges

Water flows easily through the edges of a plywood sheet. Apply a waterproof sealant at the edges of plywood sheets before its installation. Epoxy or any special edge sealants ensure that no water enters the plywood.

2. Waterproof Coatings

Waterproof coatings protect the outer layer of plywood from moisture. Therefore, it is highly recommended to apply waterproof coatings on plywood sheets.

This layer of water-resistant coating will keep the plywood waterproof. Apply exterior-grade paints, oils, or waterproofing stains to create a barrier between the plywood and moisture-rich environments. These coatings should also be UV-resistant to protect against solar damage.

3. Waterproof Glue

If you would expose plywood to water constantly, then consider using waterproof plywood. It is bonded with waterproof glue that remains intact even when wet, making it more durable in rainy or humid conditions.

4. Protective Layer of Covering

Plywood can be protected from strong winds and heavy rain by applying an outer laminated or vinyl layer. This enhances its resistance to water, wind, and UV rays, making it ideal for outdoor applications like furniture or structures such as sheds.

5. Elevation of Plywood

If plywood has to be placed over an area that collects water or moisture, it should be raised off the ground. Plywood rots out quickly if it makes direct contact with water. To prevent this, blocks or supports should be placed under the plywood to lift it at least an inch above the base or ground level, allowing for proper air circulation and drying.

Conclusion: Make Your Choice Right for Longevity

Install your plywood outside by thinking of what type and techniques to use for the weatherproofing of that plywood. You will extend the life span of your plywood and keep it free from all possible bad effects brought by the elements outside when your plywood is sealed, coated, and maintained. Waterproof plywood can help ensure that the structures remain strong and intact even during unpredictable weather conditions for many people.

CenturyPly is a good option for quality plywood sheets that can be used outdoors and that are supposed to last long. They have been at the top for such a long period in their regard with a great durable and reliable range of products so this excellent range of weather-resistant plywood will be quite more than enough for any project on hand. Choose CenturyPly for peace of mind and long-lasting results.

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