July 17, 2024

Pros and Cons of Attic Dek vs Plywood for Attic Flooring

6 min read
Are you considering adding flooring to your attic? Check out our article comparing Attic Dek and plywood options.
An attic with two different flooring options

An attic with two different flooring options

Have you been considering adding flooring to your attic space to increase storage and accessibility? If so, you may be wondering if you should go with Attic Dek or plywood. Both materials have their advantages and drawbacks, and deciding which option is best for you will depend on your specific needs and situation.

Understanding Attic Dek: A Comprehensive Guide

What is Attic Dek and How Does it Work?

Attic Dek is a type of modular flooring system that is specifically designed for attic spaces. The system consists of plastic panels that snap together to create a stable and sturdy surface for storage and movement. Attic Dek is typically made from high-impact polypropylene, which gives it strength and durability.

One of the key benefits of Attic Dek is that it allows homeowners to utilize the often-overlooked space in their attics for storage. By creating a stable and secure surface, Attic Dek makes it possible to store boxes, bins, and other items in the attic without worrying about them falling through the ceiling or damaging the insulation. Additionally, Attic Dek can help improve the energy efficiency of a home by creating a barrier between the insulation and the stored items, which can help prevent heat loss in the winter and heat gain in the summer.

Advantages of Using Attic Dek

Increased Storage Space and Accessibility

One of the main advantages of using Attic Dek is that it allows you to create more storage space in your attic without having to worry about damaging the ceiling below. With Attic Dek, you can safely store boxes, bins, and other items without the risk of them falling through the ceiling. Additionally, Attic Dek makes it easier to access your stored items since you can walk around and move things without worrying about tripping over insulation or other obstacles.

Easy Installation Process

Another advantage of Attic Dek is that it is incredibly easy to install. The panels come in different sizes and shapes, and they simply snap together like puzzle pieces. You don’t need any special tools or skills to install Attic Dek, which makes it a great DIY option for homeowners.

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Durable and Long-Lasting

Attic Dek is made from high-quality materials that are designed to withstand the weight of heavy items and foot traffic. The panels are made from sturdy plastic that is resistant to moisture, mold, and mildew, which means that they will last for years without deteriorating. Additionally, Attic Dek is designed to be easily removed and reinstalled, which makes it a versatile storage solution that can be adapted to your changing needs over time.

Potential Drawbacks of Attic Dek

Limited Weight Capacity

One potential drawback of Attic Dek is that it has a limited weight capacity. The material can typically support between 250-300 pounds per square foot, which may not be enough for some heavy items, such as large furniture or heavy equipment. If you plan to store heavy items in your attic, you may need to consider a different flooring option.

Not Suitable for All Attic Types

Additionally, Attic Dek may not be suitable for all types of attics. The system is designed to work with attic joists that are 16 inches on center and spaced 24 inches apart. If your attic has a different layout or spacing, you may need to consider a different flooring option.

Installation Can Be Time-Consuming

Another potential drawback of Attic Dek is that the installation process can be time-consuming. While the system is designed to be easy to install, it still requires careful measuring and cutting to ensure a proper fit. Depending on the size of your attic and the complexity of the layout, installation could take several hours or even days.

May Not Be Suitable for Insulated Attics

Finally, Attic Dek may not be suitable for attics that are insulated. If your attic has insulation between the joists, installing Attic Dek could compress the insulation and reduce its effectiveness. In this case, you may need to consider an alternative flooring option or consult with a professional to determine the best course of action.

Plywood 101: Everything You Need to Know

Definition and Uses of Plywood

Plywood is a type of engineered wood product that is made by gluing together thin layers of wood veneer. The resulting sheet is strong and durable, and it is used in a wide range of applications, including as subflooring, roofing, and sheathing. Plywood can also be used as flooring in attics.

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One of the advantages of plywood is its versatility. It can be made from a variety of wood species, including hardwoods and softwoods, and can be produced in different thicknesses and grades. This makes it a popular choice for both construction and decorative purposes. Additionally, plywood is often preferred over solid wood because it is less prone to warping and shrinking, and it is more cost-effective.

Benefits of Using Plywood for Attic Flooring

Durable and Long-Lasting

Plywood is known for its durability and longevity. It can withstand heavy weight loads without warping or cracking, which makes it ideal for use as attic flooring. Additionally, plywood is resistant to moisture and pests, which can help ensure a long lifespan for your attic floor.

Versatile and Customizable

Plywood comes in a variety of sizes and thicknesses, which makes it highly versatile and customizable. You can choose the thickness and grade of plywood that is best suited for your specific application. Additionally, plywood can be easily painted or stained to match your existing decor.


Compared to other flooring options, plywood is a cost-effective choice for attic flooring. It is readily available and typically less expensive than hardwood or carpet. Additionally, plywood is easy to install, which can save you money on installation costs if you choose to do it yourself.

Disadvantages of Using Plywood for Attic Flooring

Prone to Warping and Moisture Damage

One of the main disadvantages of using plywood for attic flooring is that it is prone to warping and moisture damage if not properly sealed and maintained. Attics can be prone to high levels of humidity, which can cause the plywood to expand and contract, leading to warping and buckling. Additionally, if the plywood is not properly sealed, it can absorb moisture, which can lead to rot and decay over time.

Requires Regular Maintenance

To ensure that your plywood attic floor lasts for a long time, it will require regular maintenance. This includes sealing the surface to prevent moisture damage, inspecting it for signs of wear and tear, and replacing any damaged or warped pieces as needed. While plywood is a durable and long-lasting material, it does require some upkeep to maintain its integrity.

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Not Suitable for Heavy Loads

Another disadvantage of using plywood for attic flooring is that it may not be suitable for heavy loads. Plywood has a weight limit, and if you exceed it, the floor may sag or even collapse. This can be a safety hazard, especially if you plan to store heavy items in your attic. If you need to store heavy items, you may want to consider using a different type of flooring, such as OSB or tongue-and-groove boards, which are better suited for heavy loads.


When it comes to deciding between Attic Dek and plywood for your attic flooring, there are pros and cons to both options. Attic Dek is easy to install and provides increased storage space and accessibility, but it has a limited weight capacity and may not be suitable for all attics. On the other hand, plywood is durable and long-lasting, but it is prone to warping and moisture damage if not properly sealed and maintained.

Ultimately, the decision will come down to your specific needs and circumstances. Consider factors such as weight capacity, maintenance requirements, and budget when choosing between Attic Dek and plywood for your attic flooring.

Another factor to consider when choosing between Attic Dek and plywood is the insulation of your attic. If your attic is not properly insulated, it can lead to energy loss and higher utility bills. Attic Dek can be installed without disturbing the insulation, while plywood may require the insulation to be moved or removed, which can be a time-consuming and costly process.

Additionally, if you plan on using your attic for more than just storage, such as a home office or workout space, plywood may be a better option as it provides a more stable and solid surface. Attic Dek may not be suitable for activities that require a more stable surface, as it can flex and bend under weight.

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