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Plywood On Top Of Box Spring

Plywood On Top Of Box Spring

Written by: Daniel Connell · Updated on: January 19, 2024
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Key Takeaways

Plywood can give extra support to your mattress by placing it on top of a box spring. To make sure it works safely, use a high-quality and smooth-surfaced plywood with a thickness of ¾ inch or more. Check your mattress warranty as some manufacturers may void it if plywood is used. To avoid slipping, cut the plywood to fit the box spring size with extra space at the edges. Adding a waterproof, breathable, and hypoallergenic mattress protector is also recommended.

However, plywood might not be a long-term solution since it may need to be inspected, rotated, or replaced over time. If you still experience sagging or lack of support, consider investing in a new mattress or adjustable bed for a better sleep quality.

Can Plywood Be Safely Placed On Top Of A Box Spring?

Plywood can safely be added on top of a box spring to provide extra support for a mattress. Before doing so, ensure that the plywood is thick enough to support the mattress and any sleepers, is smooth and free of protruding nails or screws, and won't affect the contouring ability of a memory foam or latex mattress. Additionally, check with the manufacturer to avoid any warranty voids. While adding plywood to a box spring may be cost-effective, take necessary precautions to ensure that it is done safely.

How Thick Should The Plywood Be To Put On Top Of A Box Spring?

For a sturdy and stable surface, use plywood that is at least ¾ of an inch thick to top your box spring. This will provide a strong foundation that prevents your mattress from sagging over time. Make sure the plywood is cut to fit the dimensions of your box spring and leave a little extra space to avoid slipping or shifting while you sleep.

Opt for high-quality, smooth-surfaced plywood to prevent any snags or bumps that could damage your mattress. If you have a heavy mattress or plan on using the plywood for a long time, consider a thicker board for extra support.

Adding plywood to your box spring helps prolong the life of your mattress by creating a level surface. Choose the right thickness and quality of plywood for comfortable and supportive sleep for years to come.

A rotated mattress, much like rotated tires, typically wears more evenly and reduces indentions or support issues.

Will Placing Plywood On Top Of A Box Spring Affect The Mattress Warranty?

Placing plywood on top of your box spring can provide extra support for your mattress. However, before making any changes, check with your mattress manufacturer to avoid any potential warranty issues. Some warranties may be voided if the mattress is placed on an undesignated support system. If you decide to use plywood, choose a high-quality plywood that is at least 3/4 inch thick and has a smooth surface. Ensure the plywood is properly secured to the box spring to prevent slipping or movement. Ultimately, it is important to consider potential warranty issues and take proper precautions to ensure the longevity of your mattress.

Is It Necessary To Cover The Plywood With A Mattress Protector?

Covering your plywood with a mattress protector is a smart investment for your bedding. The protector will safeguard your mattress from damage, stains, and allergens, which will ultimately increase its lifespan. Moreover, some protectors offer extra support and comfort for a better sleep experience.

When purchasing a mattress protector, ensure that it is hypoallergenic, breathable, and waterproof. Consider the size of your mattress, the quality of materials, and customer reviews before making your final decision.

In conclusion, it is not necessary to cover your plywood with a mattress protector, but it is highly recommended for the protection, longevity, and comfort of your sleeping surface. Invest in a high-quality protector that meets your needs and budget for the best results.

How Long Can Plywood Be Used On Top Of A Box Spring Before Needing Replacement?

Plywood can provide a strong, flat surface on your box spring. The lifespan of the plywood can be influenced by the quality, frequency of use, and environmental factors. On average, plywood can last for several years to a decade or more. To ensure the longevity of the plywood, regularly inspect it for signs of wear and tear, such as warping or cracking. Replace it when necessary, and rotate it periodically to distribute weight evenly. Consider using high-quality materials like Baltic birch or marine-grade plywood and avoid exposing it to excessive moisture or sunlight. With regular care, you can prolong the usefulness of the plywood on your box spring.

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X is the Founder and Editor-in-Chief of He has been featured in Fast Company, Reader's Digest, Business Insider,, Huffington Post, Washington Post, AskMen, and She Knows. X has personally tested over 268+ mattresses and hundreds of pillows, sheets, beds, and other sleep products.

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