Successcrete-Decorative Concrete > news > Floor leveling compound wood subfloor

Floor leveling compound wood subfloor

In this blog, we will detail:

1. Introduction

2. Types of Floor Leveling Compounds

3. Preparation of floor leveling compound wood subfloor

4. Application of floor leveling compound wood subfloor


Floor leveling compound wood subfloor


What is Floor leveling compound Wood subfloor?

A floor leveling compound is a material that is used to create a smooth, level surface on a wood subfloor before installing a new flooring material such as tile, carpet, or hardwood.


Wood subfloors are prone to warping, cupping, and unevenness over time due to changes in temperature and humidity. These imperfections can cause new flooring materials to buckle, crack, or wear unevenly.


A floor-leveling compound is typically made of cement and other aggregates and can be mixed with water to create a thin, liquid-like consistency.


The compound is poured onto the subfloor and spread with a trowel, filling in low spots and smoothing out high spots.


Once the compound is dry and cured, it creates a level surface that is ready for the new flooring material to be installed. This process can help to extend the life of the new flooring material and ensure a smooth and even finish.


It’s important to note that floor leveling compound should only be used on wood subfloors that are structurally sound and free from rot, mold, and other damage.


It’s also important to follow the manufacturer’s instructions for mixing and applying the compound, as well as allow sufficient time for it to dry and cure before installing the new flooring material.


The importance of floor leveling compound

Floor leveling compound is an important material to use when installing a wood subfloor because it helps to ensure that the final flooring surface is level and smooth.

Here are some reasons why using a floor-leveling compound is important:

Prevents floor damage: A floor leveling compound wood subfloor with uneven or low spots can cause the final flooring material to wear unevenly or even crack. This can lead to expensive repairs down the road.


Improves appearance: Uneven flooring can also be unsightly, making it difficult to properly install and position baseboards and trim.


Enhances safety: Uneven floors can pose a safety hazard, causing people to trip and fall.


Easier to clean: A level floor is easier to clean than one with dips and low spots.


Saves time and money: Using a floor leveling compound can save time and money on future repairs or replacements.


In short, a floor leveling compound wood subfloor helps to ensure that the final flooring surface is level, smooth, and safe. It’s an essential step in the installation process that shouldn’t be skipped.

Floor leveling compound wood subfloor

Types of Floor Leveling Compounds

Cement-Based Compounds

Cement-based compounds are materials that are made by mixing cement with other substances such as sand, gravel, and water.

They are commonly used in construction for their strength, durability, and versatility.

Here are some advantages and disadvantages of cement-based compounds:

1. Advantages

Strength: Cement-based compounds are known for their high compressive strength, making them ideal for construction applications that require durable and long-lasting materials.

Durability: Cement-based compounds are resistant to moisture, fire, and pests, making them ideal for use in harsh environments.

Versatility: Cement-based compounds can be used for a variety of construction applications, including flooring, walls, and even sculptures.

Affordability: Cement-based compounds are relatively inexpensive compared to other construction materials like wood or steel.

Sustainability: Many cement-based compounds are made with recycled materials, making them a more environmentally-friendly option.

2. Disadvantages

Brittle: Cement-based compounds are known to be brittle and can crack or chip easily if not installed correctly or if subjected to extreme stress or weather conditions.

Long curing time: Cement-based compounds require a long curing time, which can slow down construction projects.

Environmental impact: Cement production is a major contributor to carbon emissions, making it a less environmentally-friendly option.

Health concerns: The dust produced during the cutting, grinding, and sanding of cement-based compounds can be harmful if inhaled, leading to respiratory problems.

Limited design options: Cement-based compounds are limited in terms of design options and may not be suitable for more decorative or intricate applications.

Gypsum-Based Compounds

Gypsum-based compounds are building materials that are made from gypsum, a soft mineral composed of calcium sulfate dihydrate.

These compounds have several advantages and disadvantages, which are outlined below:

1. Advantages

  1. Fire resistance: Gypsum-based compounds are naturally fire-resistant, making them an ideal choice for use in buildings and other structures that require fire protection.
  2. Sound insulation: Gypsum-based compounds have excellent sound insulation properties, which make them an ideal choice for use in buildings and homes where noise reduction is important.


Durability: Gypsum-based compounds are durable and long lasting, making them an ideal choice for use in buildings and homes that are subject to wear and tear.


Versatility: Gypsum-based compounds can be used for a variety of applications, including as a finish for walls and ceilings, as a base for flooring, and as a bonding agent for insulation.


Low cost: Gypsum-based compounds are relatively inexpensive, making them a popular choice for use in construction and other building applications.

2. Disadvantages

Moisture sensitivity: Gypsum-based compounds are sensitive to moisture and can be damaged if they come into contact with water. This can cause the material to swell and lose its structural integrity.


Limited strength: While gypsum-based compounds are durable, they are not as strong as some other building materials. This can limit their use in applications where high levels of structural strength are required.


Limited resistance to impact: Gypsum-based compounds are prone to cracking and breaking upon impact, which can be a concern in high-traffic areas or in buildings where there is a risk of impact damage.


Limited resistance to chemicals: Gypsum-based compounds are not resistant to chemicals, which can limit their use in industrial or commercial applications where exposure to chemicals is a concern.


Limited environmental sustainability: The production of gypsum-based compounds requires the mining and processing of gypsum, which can have negative environmental impacts.

Additionally, the disposal of waste gypsum can be problematic as it can leach into waterways and cause pollution.


Self-Leveling Compounds

Self-leveling compounds are a type of flooring material that is applied to a subfloor to create a smooth, level surface.

They are commonly used in both residential and commercial settings to prepare a surface for the installation of carpet, tile, vinyl, or other flooring materials.

1. Advantages

Leveling: Self-leveling compounds can help to level out uneven or sloping subfloors, creating a smooth surface for the installation of flooring materials.

Time-Saving: The application of self-leveling floor leveling compound wood subfloor is a quick process, and they dry rapidly, allowing for faster installation of the final flooring material.

Durability: Self-leveling compounds are highly durable and can withstand heavy foot traffic and other wear and tear.

2. Disadvantages

Cost: Self-leveling compounds can be more expensive than traditional subfloor materials, such as plywood or concrete.

Limited Application: Self-leveling compounds are not suitable for all types of subfloors and flooring materials.

They are typically used on concrete or cementitious subfloors, and may not adhere well to certain types of surfaces.

Skill Required: Applying Floor leveling compound wood subfloor requires a certain level of skill and expertise. Incorrect application can lead to a subpar finish, which can affect the final flooring material’s performance.


Floor leveling compound wood subfloor

A.Preparation of floor leveling compound wood subfloor

Before preparing a floor leveling compound for a wood subfloor, it is essential to assess the condition of the subfloor. Here are the steps to follow:

Assessment of Subfloor Condition

1. Inspection for Structural Issues

Inspection for Structural Issues: Check the subfloor for any structural issues, such as sagging or uneven areas.

If there are structural issues, they need to be fixed before applying the leveling compound. Consult with a professional contractor or engineer to determine the best course of action.


2. Identification of Damaged Areas

Identification of Damaged Areas: Inspect the subfloor for any damaged areas, such as cracks, holes, or gaps between the boards.

Use a flashlight to identify any problem areas that are difficult to see.

Mark these areas with masking tape or a marker to ensure that they are addressed during the leveling process.

Once you have assessed the subfloor and identified any structural or damaged areas, you can begin to prepare the subfloor for the leveling compound.

·Preparing the Subfloor for Leveling the Compound

·Clean the Subfloor

·Sand the Subfloor

·Fill in Damaged Areas

·Apply a Primer

Clean the Subfloor: Sweep or vacuum the subfloor to remove any dirt, debris, or loose material. Ensure that the subfloor is completely clean before proceeding.

Sand the Subfloor: Sand any high spots or rough areas on the subfloor with a sanding machine or hand sander.

The subfloor should be as smooth as possible before applying the leveling compound.

Fill in Damaged Areas: Fill in any cracks, holes, or gaps between the boards with wood filler or a similar product.

Follow the manufacturer’s instructions for application and drying time.

Apply a Primer: Apply a primer to the subfloor to ensure proper adhesion of the leveling compound. Follow the manufacturer’s instructions for application and drying time.

After following these steps, you are now ready to apply the floor leveling compound to the wood subfloor.

Follow the manufacturer’s instructions for application and drying time to ensure a smooth and level surface for your flooring installation.


B. Cleaning the Subfloor

Cleaning the subfloor is an important step in preparing it for the installation of new flooring. Here are two important steps to follow:

1. Removal of Debris and Loose Material

Removal of Debris and Loose Material:

The first step is to remove all debris and lose materials from the subfloor. This includes any dirt, dust, old adhesive, nails, staples, or other objects that may be present.

A broom and a vacuum cleaner can be used to sweep and clean the subfloor. If there is any residue from the old adhesive or glue, a scraper or putty knife can be used to remove it.

3. Sanding and Smoothing Rough Areas

Sanding and Smoothing Rough Areas:

After removing debris and lose materials, the subfloor may have rough or uneven areas that need to be smoothed out.

This can be done by sanding the subfloor with a floor sander or by using a hand-held power sander. It is important to wear a dust mask and safety goggles when sanding the subfloor.

Once the rough areas are sanded down and smoothed out, the subfloor is ready for the installation of the new flooring.


It is important to note that if the subfloor is severely damaged or if there are any structural issues, it may need to be repaired or replaced before new flooring can be installed.


C. Application of a Primer

1. Importance of Priming

A primer is a preparatory coating applied to a surface before the main paint or coating is applied. The primary purpose of priming is to provide a stable and consistent base for the final coat.

Priming is essential for several reasons:


Promotes Adhesion: Primers create a bond between the surface and the topcoat, improving adhesion and durability.

It helps the paint adhere more effectively to the surface, preventing it from peeling, cracking, or chipping.


Prevents Stains and Discoloration: Primers help prevent stains, discoloration, and bleeding through the topcoat. It also prevents the topcoat from absorbing stains and discoloration from the surface.


Increases Coverage: Primers enhance the coverage of the topcoat by providing a consistent base, reducing the number of coats required, and saving time and money.


Improves Appearance: Primers can improve the final appearance of the topcoat by reducing surface imperfections and creating a smoother finish.

2. Application of the Primer

Step 1: Prepare the Surface

Before applying the primer, the surface must be cleaned, dried, and free of any loose paint, dust, or debris.

Use a scraper, sandpaper, or wire brush to remove any flaking or peeling paint. Wipe the surface with a damp cloth and let it dry completely.


Step 2: Choose the Right Primer

Select a primer suitable for the surface you are painting, and the type of paint you will be using. For example, use an oil-based primer for surfaces that are difficult to adhere to, such as metal or plastic.


Step 3: Apply the Primer

Stir the primer thoroughly and pour it into a paint tray. Use a brush or roller to apply the primer in even strokes. Make sure to apply the primer in a thin, even coat, and avoid leaving any thick or uneven spots. Allow the primer to dry completely, usually for 24 hours, before applying the topcoat.


Step 4: Sand the Surface

Once the primer is dry, lightly sand the surface with fine-grit sandpaper to smooth out any rough spots or imperfections. Wipe the surface clean with a damp cloth.


Step 5: Apply the Topcoat

Now, you can apply the topcoat of paint or finish. Follow the instructions for the paint you are using, and apply it in thin, even coats. Allow each coat to dry before applying the next one.


Overall, priming is an essential step in achieving a high-quality finish that is durable and long-lasting. Taking the time to properly prime your surface can save you time and money in the long run.


Floor leveling compound wood subfloor

Application of floor leveling compound wood subfloor

A. Mixing the Compound

1. Preparation of the Mixing Area

Preparation of the Mixing Area:

The mixing area should be a clean and dry place. It’s essential to ensure that there is no debris, dust, or any other substances that could contaminate the mixture.

The area should be well-ventilated to allow for proper air circulation.

You should also ensure that you have all the necessary tools and equipment within reach, including a mixing bucket, mixing drill with a paddle attachment, and a measuring cup.


2. Correct Mixing Ratio

Correct Mixing Ratio:

Before mixing the compound, it’s essential to determine the correct mixing ratio, which is usually specified on the product packaging.

The mixing ratio is the amount of water that should be added to the compound to achieve the desired consistency.

It’s important to adhere to the recommended mixing ratio to ensure that the compound sets and dries correctly.


To mix the compound, follow these steps:

Begin by adding the recommended amount of water to the mixing bucket.

Slowly add the leveling compound to the water while stirring continuously with a mixing drill and paddle attachment.

Mix until the compound is smooth and lump-free, and has reached the desired consistency.

Allow the mixture to sit for a few minutes to allow any air bubbles to escape.

Mix the compound again for a few seconds before applying it to the subfloor.

When applying the leveling compound, it’s important to follow the manufacturer’s instructions carefully, including the recommended thickness and drying times. Once the compound is dry, you can then install your new flooring on top of it.

B. Application of the Compound

1. Techniques for Applying the Compound

Techniques for Applying the Compound:

There are different techniques for applying compound materials, depending on the specific product and the surface you are working with. Here are some common techniques:


This is the most common method for applying compound material.

Spread the compound evenly using a trowel, starting at one end of the surface and working your way to the other end. Use a smooth, even motion to create a flat surface.


Some compounds can be applied using a spray gun. This method is faster than using a trowel but requires more skill to ensure an even coat.


Compounds can also be applied using a roller, similar to painting. This method is useful for large areas but may require more coats to achieve a smooth finish.


2. Filling in Low Spots and Leveling High Areas

Filling in Low Spots and Leveling High Areas:

When using the compound to fill in low spots and level high areas, the goal is to create a smooth, even surface. Here are some tips for achieving this:

Clean the surface: Make sure the surface is clean and free of debris before applying the compound.

Apply in thin layers: It’s better to apply multiple thin layers of the compound than one thick layer. This allows the compound to dry more evenly and reduces the risk of cracking.

Sand between layers: After each layer of the compound has dried, sand the surface lightly to remove any bumps or ridges. This will help create a smooth finish.

Use a level: To ensure that the surface is level, use a spirit level to check your work as you go. This will help you identify any high or low spots that need to be corrected.

Feather the edges: When applying the compound, feathering the edges to blend it into the surrounding surface. This will help prevent a visible seam between the compound and the rest of the surface.

Overall, the key to successfully applying compound to fill in low spots and level high areas is to work carefully and methodically, taking your time to ensure a smooth, even finish.


C. Drying and Curing Time

1. Factors that Affect Drying Time

The drying time of a material depends on several factors, including:

Humidity: Higher humidity levels slow down the drying process because the air is already saturated with moisture.

Temperature: Higher temperatures increase the rate of evaporation, accelerating the drying process.

Airflow: Adequate airflow can speed up drying time by removing moisture from the surface of the material.

Thickness: The thicker the material, the longer it will take to dry.

Surface area: Larger surface areas take longer to dry than smaller ones.

Material type: Different materials have different drying times depending on their composition and moisture content.

2. Recommended Curing Time

Curing is the process of allowing a material to fully harden or dry after it has been applied or formed. The recommended curing time depends on the type of material being used and its intended use.

Here are some general guidelines:

Paint: Most paint manufacturers recommend waiting 24-48 hours between coats and 7-14 days for the paint to fully cure.

Concrete: Concrete typically takes 28 days to fully cure, but can take longer depending on factors such as temperature and humidity.

Wood: Wood should be allowed to acclimate to its environment for a few days before being worked on. After staining or finishing, the wood should be allowed to cure for at least 24-48 hours before use.

Adhesives: The recommended curing time for adhesives varies depending on the type of adhesive and the materials being bonded. It can range from a few hours to several days.

It’s important to follow the manufacturer’s recommendations for curing time to ensure that the material is fully cured and ready for use.

Floor leveling compound wood subfloor


A. Recap of the Importance of Level Flooring

Level flooring is essential for a variety of reasons. It provides a safe and stable surface for walking and moving furniture, improves the appearance of a room, and ensures that flooring materials are installed correctly.

Additionally, a level subfloor is necessary for the proper installation of tile, vinyl, and laminate flooring, as well as hardwood flooring.

B. Summary of the Steps Involved in Leveling a Wood Subfloor

To level a wood subfloor, you will need to follow these steps:

Inspect the subfloor for damage and repair any issues.

Clean the subfloor of debris and remove any nails or screws that are sticking up.

Determine the low spots on the subfloor and mark them with a chalk line.

Use a self-leveling compound to fill in low spots and level the subfloor.

Allow the self-leveling compound to dry according to the manufacturer’s instructions.

Sand any high spots on the subfloor with a belt sander or floor buffer.

Vacuum the subfloor to remove any dust or debris.

C. Final Thoughts and Recommendations.

When it comes to leveling a wood subfloor, it is essential to take the time to do it correctly.

Skipping steps or rushing through the process can result in a subpar final product that will cause issues down the road. Additionally, be sure to use the proper safety equipment when working with self-leveling compounds and power tools.

Finally, if you are unsure about any aspect of the process, it is always best to consult with a professional flooring installer to ensure that the job is done right.

Micro Cement

Request a free quote,or anything your like


  • Call us: +86-186 1735 4612
  • No.10,East Xintang Avenue, Xintang, Zengchang,Guangzhou, Guangdong,China

  • Contact: Notting

Contact US

Success Crete is a certified concrete contractor & manufacturer, specializing in decorative concrete both in residential and commerical