7 Expert Tips for Applying Wall Putty on Different Surfaces: Concrete and Painted Walls

Wall putty is an essential material used for preparing walls before painting or wallpapering. It is a paste-like substance that is applied to walls to create a smooth surface for painting. Wall putty can also be used to cover cracks, holes, and other imperfections on walls. In this comprehensive guide, we’ve collected and answered many of the questions you might be concerned about. The following covers everything you need to know about wall putty. Practical application methods, general instructions for operating procedures and other relevant issues are all included in this blog.


What Is Wall Putty and Importance?


Wall putty is also known as a skim coat. It is a cement-based material used for smoothing and filling plastered walls. The importance of using wall putty cannot be overemphasized as it helps to create a flawless finish on walls. Wall putty is also an excellent solution for hiding cracks, holes, and other imperfections on walls, leaving them looking new and smooth.







Putty Construction Preparation

Before entering the construction steps, let’s sort out the preparatory work list first.


General Preparation


1. White Cement

White cement is an essential ingredient in making wall putty. Generally speaking, it is a type of cement used in construction projects to create a smooth and even finish.


2. Fine Sand

Fine sand is another essential ingredient that is used in making wall putty. It can help to create a smooth texture and improves the workability of the putty.


3. Water

Water is needed to mix the white cement and fine sand to create the putty.


4. Putty Knife

A putty knife is used to apply the putty to the wall.


5. Sandpaper

Sandpaper is used to smooth out the wall’s surface after the putty has dried.






Must-have Chemical Additives for Putty


In addition, making wall putty cannot be separated from chemical materials. Here is the list of must-have materials:


1. RDP(Re-dispersible Polymer)


Re-dispersible Polymer Powder is used as a binding agent in wall putty. They improve the adhesive properties of the putty, making it stick better to the surface of the wall.






2. Cellulose


The addition of HPMC(Hydroxypropyl Methylcellulose) in your formula is necessary. It plays an irreplaceable role in building materials. Moreover, it can significantly improve building materials’ water retention, fluidity and lubricity. Of course, HEMC(Hydroxyethyl Methylcellulose) can also be an option added to putty use.







3. HPS(Hydroxypropyl Starch Ether)


HPS(Hydroxypropyl Starch Ether) is a must to add a smooth touch to your application. It can help you to strengthen the workability and the feel of the construction.







However, the specific chemical raw materials used in wall putty can vary depending on the brand and type of putty being made. Additionally, it’s important to follow the instructions on the product label carefully to ensure that the wall putty is mixed and applied correctly.






Putty Construction Guide


With all the tools and raw materials you need, let’s look at the steps required for different practical applications:

How to Putty a Wall?


  • Step 1

Clean the wall thoroughly to remove any dirt, dust, or debris.


  • Step 2

Mix the wall putty with water as per the instructions on the packet.


  • Step 3

Apply the putty to the wall using a putty knife. Remember to start at the top of the wall and work your way down, spreading the putty evenly.


  • Step 4

Once you have covered the entire wall, let the putty dry for a few hours.


  • Step 5

Once the putty is dry, use some sandpaper to smooth out any rough spots or uneven areas.


  • Step 6

Repeat the process if necessary until you achieve a smooth and even finish.






How to Apply Putty on Wall Cracks?


  • Step 1

Please remember to clean the area around the crack thoroughly to remove any dirt, dust, or debris first.


  • Step 2

Apply the putty to the crack using a putty knife.


  • Step 3

Spread the putty evenly over the crack, making sure to fill the entire space.


  • Step 4

Let the putty dry for a few hours.


  • Step 5

Once the putty is dry, use your sandpaper to smooth out any rough spots or uneven areas.







How to Apply Wall Putty on Painted Wall?


It is possible to apply putty on a painted wall, but it is recommended that you remove the paint from the area before applying the putty. This will help the putty to adhere better to the wall, resulting in a smoother and more even finish. Follow the steps for putting a wall detailed above, and sand the surface of the wall to remove any remaining paint before applying the putty.






How Long Does Wall Putty Take to Dry and Ways to Dry Faster?


Wall putty typically takes anywhere from 6-24 hours to dry, depending on the temperature and humidity levels in your home. To make wall putty dry faster, you can try using a fan or dehumidifier to reduce the humidity levels in the room. You can also add a small amount of quick-drying additive to the wall putty mixture to speed up the drying process.





Does Mounting Putty Damage Walls?


Mounting putty is designed to be removable and should not damage walls if used correctly. However, if left on the wall for an extended period, it can leave a residue that may be difficult to remove. On the other hand, wall putty is not designed to be removed and may damage walls if not applied correctly or if too much pressure is applied during the application process.




Use Wall Putty on Wood?


Wall putty is primarily designed for use on plastered walls and may not be suitable for use on wood surfaces. It is best to use wood filler or spackle on wooden surfaces, as they are designed specifically for this purpose.









Wall putty is an essential material for achieving a smooth and flawless finish on your walls. Whether you’re applying it to a new wall or to cover up cracks or holes, it’s important to follow the correct application techniques and use high-quality products to achieve the best results. It is critical to always follow the instructions on the product label and use the appropriate safety equipment when working with wall putty.


At WOTAI, we take pride in providing high-quality chemical raw materials that meet our customers’ needs in various industries. Our commitment to quality, professionalism, and the customer satisfaction has earned us a reputation as a trusted manufacturer of chemical raw materials.


In addition to our primary products, we offer a range of services to support our customers. Our experienced team of professionals can provide technical support, product development, and custom formulation services to help our customers create products that meet their specific requirements.


Our OEM system and expert custom recipe will help you to achieve better building results. We believe that by working closely with our customers, we can help them achieve their goals and grow their businesses. Whether you need a reliable supplier of chemical raw materials or a partner in product development, we’re here to help.


Thank you for taking your time to read this guide on wall putty. If you have any further related questions or would like to learn more about WOTAI’s products and services, please don’t hesitate to contact us. We look forward to working with you.




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