What Thickness Plywood Should You Use for Under a Bed Mattress?

Thick plywood is a common type of material used for under-bed mattresses. It can be found at home improvement stores or lumber yards, but what thickness should you use? This article will cover the basics to help you decide which thickness is right for your particular needs.

What Thickness of Plywood Should You Use Under a Mattress? A plywood thickness of less than 3/4 inch should be avoided. It will not hold enough weight to support the weight a bed mattress or a person sitting down. It is possible to have plywood as thin as 3/4 inch, but it should be thicker.

A box spring is a special designed mattress that adds firmness. Individuals may feel the support is not sufficient for them and might consider adding plywood to their bed. This plywood is made up of multiple layers of glued-together wooden pieces. A plywood sheet can be added to an existing mattress to make it more firm.

Measurements for plywood

The type of mattress will determine the plywood thickness requirements. It is not recommended to use plywood thinner than 3/4 inches. This will make it less strong and not strong enough for a mattress or a person who lies down. Although plywood should not be thinner than 3/4 inch, it is recommended that it be at least 3/8 inch thick. Consider the weight of the mattress and the stature of the person using the plywood when deciding on its thickness.

Advantages of Plywood

It is cost-effective and easy to give a mattress more firmness by using plywood. Plywood prolongs the life expectancy of a mattress and helps to save money on new sets. It is simple to put in plywood and only a few measurements are needed.

Plywood’s disadvantages

Most plywood will restrict the mattress’s ability to breathe, trapping moisture and mold. Although plywood can be used to fix a soft mattress issue, the plywood will make the mattress more fragile and cause it to shrink faster. The wood splinters in plywood will also rip apart the mattress fabric. Plywood might not offer the same level of support as a new mattress.


Laying plywood under your mattress is a bad idea. Specific guidelines and details should be included on the warranty card. Most warranties are clear and state that the warranty is void if the original design of a bed is altered.

Can you put plywood under a mattress? Plywood can help with a sagging mattress. You can use plywood to make a match for the area. Place it underneath the mattress in the soft place. It will make the mattress feel firmer in the trouble area.

Is it possible for me to place a board under my bed? If your mattress is too soft, you can slip plywood boards between the mattress (or the box spring) and the frame or box spring to prevent it from sinking or sagging too much. This could give your mattress additional support, which can help you to sleep better at nights.

What can you place under a mattress to support it? Mattress bases — also known as mattress foundations — are supports that you place directly underneath your mattress. Mattress bases hold your mattress up regardless of whether you have a metal bed frame with no support or a wooden headboard, footboard, and slats.

What Thickness of Plywood Should You Use Under a Mattress? Similar Questions

What type of plywood is best to use for a bed?

For DIY bed frame building, the rule of thumb is to choose a Birch Plywood base. You can be confident that the product you build will last by incorporating the natural qualities of Birch into the core of your purchase.

Can I place plywood underneath my memory foam mattress

Under a memory foam mattress, a solid surface such as plywood is not recommended. The foam should breathe. Placing it on a plywood or floor will cause mold growth.

Do slat beds ruin mattresses?

Possible sagging: Some mattresses could sag if they are spaced further than 3 inches apart. … This could cause injury to your mattress or bed frame.

How can I stop my mattress sinking in the middle of my bed?

Rotation or Flip It Around

It is vital to rotate or flip your mattress regularly. If you have a pillow-top mattress, flip it every six to six months.

You can use plywood to replace a box spring.

Both plywood and bunkie board can be used to replace box springs. This really depends on what mattress you have. To reduce squeakiness, you can use one or the other on top of a regular box spring. Bunkie board covered in fabric.

You can put any mattress in a slatbed.

A slatted mattress can accommodate any type of mattress, pocket springs, memory foam or latex. You want a one-sided mattress. Because it is layered, this mattress can be flipped to make the one-side the sleep side and the base side.

What other alternatives to a box spring are there?

A platform bed or solid foundation made of premium wood can be a better option than a traditional boxspring to protect your mattress investment. It’s even more important to do this if you are buying a mattress that will last years and years.

What kind of plywood is most strong?

If you ever wondered “what is the strongest plywood?” The answer is Marine plywood. It is the most durable and strong plywood on the market. The plywood is bonded using high-quality glues, making it strong and resilient to moisture.

Which plywood is the most affordable?

D-grade plywood is the cheapest kind of plywood veneers. These sheets usually haven’t had any repairs. These plywood sheets can have flaws up to 2.5 inches wide and can have knots as large as 2.5 inches. CDX: CDX plywood is usually a low-cost material because it’s made from the lowest grades (C or D).

What should be placed under a memory-foam mattress?

It is better to use a solid or slatted mattress foundation when you have a memory foam one. The slats on a slatted base should not be further apart than 3 inches. You will need to purchase extra slats, or a bunkieboard to make your memory foam mattress stable.

What should I do with my memory foam mattress?

What should you place under a memory foam mattress, and why? Solid foundation is all you need to support your new memory-foam mattress. You can support your mattress with bunkie boards, metal bases or wooden slats. It is okay to use firm boxsprings.

Are Bed Bugs in Memory Foam Mattresses?

Myth 1: A foam mattress will keep you safe from bed bugs. Truth: Although bed bugs cannot live in foam mattresses, they can hide in small cracks in your bed frame while you are inert.

Are slat beds worth it?

Standard slat bed uses flat wooden frames that span the bed and meet in the middle. These bases offer good firm support, are easy to use and more affordable than other options. Slat beds are good for your mattress as they offer good support and good ventilation, keeping them cleaner and healthier.

Can I place a pocket-sprung mattress on a standard slatted frame?

It is possible to place a pocket-sprung mattress on a slatted platform bed frame. … This will make any mattress feel firmer, and prevent mattress from sinking into the spaces between the slats.

If I already have a boxspring, do I still need a slatted base for my bed?

If you have a bed with wood slats that are built in, you don’t need a boxspring. … In such a situation, you’d need to install slats on your box springs in order to support them and your mattress.

Why am I able to roll in the middle of my bed when I should be lying down?

The Bonnell Coil reacts to your body’s weight and mass by sinking. The mattress’s middle will sag as a result. It is common for one partner to be heavier than the other. This can cause the rest of the mattress to sag toward the middle.

What’s wrong with memory foam mattresses

Memory foam mattresses can contain toxic chemicals like formaldehyde and benzene. According to the Occupational safety and health Administration, memory foam could contain isocyanates which can cause irritation to eyes, nose, throat, skin, and throat.

Are box springs still used in beds?

Today, most modern mattresses do not necessarily require a box spring. … Those who use a traditional metal rail bed frame that is designed to hold box springs. People with an older innerspring mattress that is suitable for use with a spring box. Box springs are recommended by the manufacturer of a mattress.

What kind of bed doesn’t need a boxspring to support it?

Platform beds are low-profile bed frames that have a solid, metal or slatted base to support the mattress. Platform beds are unique in that they don’t need a box spring. So, once you buy it, it’s ready to use — no need to purchase any extra accessories.

Is it permissible to use an old boxspring with a new mattress?

It is generally a good idea to replace your boxspring with your mattress. This will increase your mattress’s lifespan. You might be able to use your old mattress’s box spring, even if it was a good quality one.

What happens if you don’t have a box spring?

You will need a boxspring for your collapsible metal frames. The mattress will not receive adequate support beyond the perimeter frame. Without a boxspring your warranty would be voided.