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what kind of plywood goes under hardwood

by Prof. Filiberto Fritsch Published 3 years ago Updated 2 years ago
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Interior plywood is designed for rooms that aren't exposed to much moisture. They make a good subfloor for carpeting, tiles, vinyl, engineered wood laminate flooring and hardwood flooring. Almost every room of the house uses interior grade plywood including kitchens and baths.Feb 18, 2021

What type of plywood should be used under hardwood flooring?

Hardwood flooring: Plywood is the best subfloor for hardwood flooring installation. CDX plywood ranging from 1/2 to 3/4-inch-thick and rated A/C will serve well for any hardwood flooring installation. Tongue-and-groove plywood is available to reduce squeaks and help the subfloor fit together better.

How thick should plywood be under hardwood flooring?

Generally, the minimum thickness for plywood is 5/8 inch; for OSB it's 23/32 inch. However, as joist spacing increases, {rblink 2428}the subfloors need to be thicker. For joist spacing of more than 16 inches up to 19.2 inches on center, the minimum thickness for both plywood and OSB is 3/4 inch.

What is best to put under hardwood floor?

What Underlayment is Best for Wood? When installing hardwood or engineered wood flooring, the best underlay options are cork and foam. However, foam does have more give than cork so, while it is the more popular option, we recommend cork. Cork has less give, making it less likely to flex underneath your planks.

How thick does the subfloor need to be for hardwood flooring?

3/4″A wood subfloor should be OSB or plywood of 3/4″ or thicker for a hardwood floor installation. Particle board and chipboard are unacceptable for solid hardwood installations, but may be used in an engineered flooring install.

Is plywood necessary under hardwood?

The answer to this question isn't a 'yes' or 'no. ' If you have a plywood subfloor already installed, and the subfloor is level and smooth, you don't need underlayment for your floor. Plywood has moisture resistance properties compared to solid wood and creates a smooth surface.

What type of plywood is used for underlayment?

Types of Plywood Underlayment Today, a much better option is a plywood specifically designed as underlayment and made with sustainably forested wood. You can also use AC exterior-grade plywood, which has one smooth face and one rougher face. Always install underlayment with the smoother face up.

What do you put down before laying hardwood?

0:304:09Well the best approach is to use a stain remover. Then cover it with a primer sealer. But keep inMoreWell the best approach is to use a stain remover. Then cover it with a primer sealer. But keep in mind some glue down adhesives won't adhere to the sealer subjec.

Do you put anything under a hardwood floor?

While not all flooring materials require an underlay during installation, hardwood floors are one of the materials that greatly benefits from a solid foundation. Typically, an underlay is a layer of material installed between the subfloor and your new hardwood floor.

Do I need subfloor for hardwood?

Traditional hardwood flooring will require an additional subfloor on top of the concrete in order to be installed correctly. Installing the right flooring based on your subflooring, or lack thereof, is important to make sure you have a strong and attractive flooring now and in the future.

Can you put hardwood floors over plywood?

Engineered or Solid Wood Flooring that is less than 1/2" thick can be installed over a plywood subfloor.

Is plywood or OSB better for subfloor?

This evolved plywood may claim an overall advantage over OSB, since plywood is a stiffer, longer-lasting subfloor option. It will also hold up better under flooring accidents like leaks or flooding, and has greater nail withdrawal strength to hold the nail in under stress.

Is a vapor barrier necessary for hardwood floors?

Do I need a moisture barrier for hardwood floors?" The answer is YES! Moisture can destroy hardwood floors. It causes cupping, warping, and even mildew if not treated. You must install a moisture barrier to protect your flooring from water wicking up from below.

Can you put hardwood floors over plywood?

Engineered or Solid Wood Flooring that is less than 1/2" thick can be installed over a plywood subfloor.

Can you use 3/4 plywood subfloor?

A plywood subfloor generally uses 1/2-inch to 3/4-inch-thick sheets of plywood with one rough side (which faces down) and one smooth side, which faces up. The sheets are typically 4 by 8 or 4 by 12 feet in size.

Can you use 7/16 plywood flooring?

This product is intended for use as an underlayment below finished floor/ wall/ roof applications, and would not be recommended as the outermost exposed material in most applications.

How thick should plywood sit?

Next down is the underlayment, which provides the smooth surface needed for installing the top. Different surfaces require different underlayment, but all underlayment must be a thin but strong layer upon which the finished flooring surface rests. Floor underlayment typically uses 5/8” plywood.

What Is Plywood Underlayment?

No interior flooring is installed as a single layer. Multiple layers contribute to a floor's strength and make it possible to use costlier material...

Plywood Underlayment: Pros

1. Dimensionally Stable: Plywood's perpendicularly-aligned layers make this product highly resistant to sharp spikes in humidity and even limited d...

Plywood Underlayment: Cons

1. Difficult to Handle: Plywood in large sheets are heavy and unwieldy, requiring either store delivery or a full-size pickup to get it to your hom...

Types of Plywood Underlayment

For a tight, stable installation, avoid grabbing just any type any plywood off the shelf. Because plywood comes in various grades, you need to buy...

Brands of Plywood to Choose

Most home centers like Home Depot, Lowe's, Menard's, and others have favored-brand arrangements with certain suppliers. For example, Columbia Fores...

Installing Plywood Underlayment

Plywood underlayment is easy to install. It comes in large sheets which quickly cover your floor space. Plus, it is easy to cut with a circular saw...

Plywood vs. Other Types of Underlayment Materials

Plywood is not the only kind of underlayment you can purchase. Before you land on plywood as your choice, assess the merits of other types of floor...

Why Do You Need Underlayment?

Your subfloor already offers a smooth and flat surface for installing hardwood flooring, so why do you need an underlayment? Underlayment materials provide a crucial moisture barrier that prevents the wood from warping or sustaining other water damage when condensation rises from the subfloor. They also offer varying degrees of soundproofing, preventing each step you take from echoing throughout the house, and of thermal insulation, keeping the floor more comfortable for bare feet.

Why do you need an underlayment for hardwood floors?

Your subfloor already offers a smooth and flat surface for installing hardwood flooring, so why do you need an underlayment? Underlayment materials provide a crucial moisture barrier that prevents the wood from warping or sustaining other water damage when condensation rises from the subfloor. They also offer varying degrees of soundproofing, preventing each step you take from echoing throughout the house, and of thermal insulation, keeping the floor more comfortable for bare feet.

What is foam insulation?

Foam represents the most basic performance in terms of soundproofing, thermal insulation and smoothing out an uneven subfloor. But as the density of the foam increases, so does its performance and price. Lightweight foam may need to be glued down to keep it in place.

Does underlayment make a subfloor smooth?

Finally, using underlayment ensures a truly even and level subfloor. In other words, you don't need to stress about making the subfloor as smooth as glass for perfect hardwood flooring.

Do you need a moisture barrier for concrete subfloor?

Advertisement. Likewise, concrete subfloors require a plastic moisture barrier, whereas you may not need one with a plywood subfloor in a non-humid environment. If you plan to nail or staple your hardwood floor in place, virtually any underlayment can be used.

Is rubber underlayment good for soundproofing?

For those looking for a premium underlayment option that requires no gluing whatsoever, rubber offers excellent moisture resistance, soundproofing and thermal regulation. It can cost double the price of felt but offers top of the line results.

Does soundproofing increase with price?

Underlayment options exist for every type of budget, but performance in terms of soundproofing and thermal insulation tends to increase with the price of the product.

What is underlayment flooring?

Underlayment Basics. An important aspect of choosing an underlayment is the flooring surface. Resilient floors, such as linoleum, rubber or fiber composite surfaces, and fully adhered carpet require an especially smooth underlayment because any flaws beneath (nail pops, splinters and cracks) have an increased visibility.

Why is an underlayment needed?

The subfloor is not expected to be smooth, as it is exposed to weathering and regular construction traffic, which is why an underlayment is necessary. The underlayment serves as a smooth, durable surface upon which the floor surface can be laid. Advertisement.

What is plywood subfloor?

Though often used interchangeably, the two terms refer to different components of a well-structured floor design. A subfloor is a base layer designed to provide structural ...

What is grade N plywood?

Plywood is graded with a lettering system A through D , with the letter N sometimes used as well. Grade N plywood is categorized by having the least number of blemishes, followed by A. The scale progresses to D, which has the greatest number of blemishes, splinters and knots. Typically, retailers use a two-letter system to indicate the quality ...

How thick is plywood for underlayment?

A final mark to check is the thickness of the plywood. Most underlayment-approved plywood is at least 11/32 inches, the standard recommendation. Some professionals, however, will use plywood as thin as 1/4 inch for resilient flooring if the subfloor is in particularly good condition. Advertisement.

Why is it important to have a smooth floor?

As previously mentioned, it is important that the surface be smooth to avoid imperfections in the cosmetic layer of the floor. Dimensional strength refers to the material's ability to retain its original shape. Exposure to water and seasonal changes in temperature effect underlayment and must be compensated for in material construction.

What is exposure 1 plywood?

Exposure 1 is constructed to withstand minimal water exposure and should not be used out of doors or in areas that are at risk for frequent water exposure. Exterior plywood is able to withstand repeated water exposure and weathering without being damaged. This class of plywood is appropriate for use outside as well in areas ...

Do You Need Paper Under a Hardwood Floor?

Not every type of hardwood floor is suitable for use with paper, with glued floors being incompatible given that the underlayment tends to stick to the bottom of the hardwood boards.

What Kind of Paper Goes Under Hardwood Flooring?

Whatever paper you choose to install under a hardwood floor must be sufficiently permeable. In other words, it needs to let a sufficient amount of moisture and air through.

What is felt paper?

Felt paper is an alternative underlayment option that is suitable for hardwood flooring. It helps increase insulation and, like rosin paper, prevents dust from rising from the subfloor.

How long has paper underlayment been around?

The installation of paper underlayment between a hardwood floor and the subfloor is something that dates back well over one hundred years, and it’s a tradition that seems to have stuck even as modern housing standards and regulations have continued to develop.

Why do you put paper on hardwood floors?

By regulating the amount of moisture that can reach the underside of the hardwood floor, the paper helps minimize the potential for moisture-related damage such as warping or mold growth and rot.

What is rosin paper used for?

Rosin paper has been a staple material in the building industry for years for use as flooring underlayment.

Why is rosin paper used in construction?

In building construction, rosin paper is used to help reduce air and moisture flow through the floor. It also creates a ‘slip sheet’ that allows the different materials to expand and contract easily.

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1.When and How to Use Plywood Underlayment - The Spruce

Url:https://www.thespruce.com/plywood-underlayment-basics-1821634

13 hours ago  · Plywood made with a hardwood face, such as oak, walnut or cherry, will hold up better than standard softwood plywood, which is typically used in floor construction. …

2.What to Put Under Hardwood Flooring | Hunker

Url:https://www.hunker.com/13402285/what-to-put-under-hardwood-flooring

11 hours ago The minimum thickness of plywood for subflooring is about 5/8 inch. Since it does not hold fasteners as well as plywood, OSB must be a little thicker, or at least 23/32 inch. What goes …

3.What Grade Plywood Do You Use for Underlayment?

Url:https://www.hunker.com/12281092/what-grade-plywood-to-use-for-underlayment

14 hours ago  · Most plywood underlayment is about 1/4 inch thick and has square edges and a smooth, knot-free top face. It typically comes in 4 x 8-foot sheets. For many years, the standard …

4.What Paper Goes Under a Hardwood Floor? (Solved)

Url:https://www.toolcrowd.com/what-paper-goes-under-a-hardwood-floor/

14 hours ago Lightweight foam may need to be glued down to keep it in place. Thanks to its affordability and ideal sound absorption and moisture resistance, felt is the most common underlayment. Most …

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