Using Wall Putty on Unplastered Walls: The Do’s and Don’ts

Using Wall Putty on Unplastered Walls: The Do’s and Don’ts is an essential topic for many homeowners and DIY enthusiasts who are embarking on home renovation and painting projects. Wall putty is a crucial component in achieving a smooth, flawless finish, but it's important to understand whether it is suitable for use on an unplastered wall. In this article, we will explore the challenges and solutions related to using wall putty on unplastered walls, as well as the advantages and disadvantages of different materials and techniques.

The Challenges of Using Wall Putty on Unplastered Walls

Wall putty is specifically designed to create a smooth surface on plastered walls by filling in imperfections and providing a base for paint. When applied to an unplastered wall, it may adhere poorly and not produce the desired finish. Instead, it is generally recommended to first prepare the wall by plastering it properly. This ensures that any unevenness is smoothed over and a suitable base is created for the wall putty.

However, there are some instances where you might want to use wall putty on an unplastered wall. For example, you might be working with a base concrete or plastered surfaces, where wall putty can effectively create a smooth, undulation-free surface ideal for a beautiful paint finish.

The Process of Preparing an Unplastered Wall for Putty Application

If you find it necessary to use wall putty on an unplastered wall, there are a few steps you should follow to ensure the best results:

Primer Application: If the wall is not already plastered, applying a primer can help improve the adhesion of the wall putty. This is especially important for exterior walls where moisture resistance is crucial.

Coarse Putty: Consider using coarse putty before applying fine putty to create an even surface. This step is essential for providing a solid foundation for the wall putty.

Smoothing: Once the coarse putty has dried, carefully apply and smooth the fine putty over the entire surface to achieve a uniform finish.

While these steps can help, it's important to note that the process can be more time-consuming and costly than simply plastering the wall first. This is why it's often recommended to start with plastering and then follow up with putty for a smoother finish.

Advanced Options for Unplastered Walls

For those looking for more cost-effective and efficient solutions, there are alternative products designed specifically for use on unplastered walls. One such product is Durowhite Premium Finish Plaster. This product offers several advantages over traditional wall putty:

Direct Application: Durowhite can be applied directly on plastered surfaces without the need for a primer, making it more convenient and cost-effective.

Greater Thickness: It allows for a thicker coat, up to 10 mm, which is not possible with conventional putty.

Water Barrier: It acts as a water barrier, protecting the wall from moisture damage.

Ease of Application: It is easy to apply without causing a burning sensation or irritation.

Improved Coverage: It provides a smoother finish, leading to a better paint coverage by up to 15%.

No Coarse Putty Needed: It eliminates the need for coarse putty, simplifying the process and reducing costs.

Overall, using wall putty on an unplastered wall requires careful consideration and preparation. While it is possible, using a primer and coarse putty can improve adhesion and final results. However, for convenience and better overall performance, it is often recommended to plaster the wall first and then apply wall putty. Alternatively, products like Durowhite Premium Finish Plaster can simplify the process, providing a more efficient and cost-effective solution.