When it comes to renovating or updating the walls in your home, you may wonder if you can apply drywall compound over wallpaper. While it may seem like a convenient solution to hide outdated or damaged wallpaper, it is important to consider the implications and potential issues that may arise. In this article, we will explore whether applying drywall compound over wallpaper is a viable option, as well as discuss the potential challenges and alternatives.
Understanding Drywall Compound:
Before delving into the question at hand, it is crucial to understand what drywall compound is. Drywall compound, also known as joint compound or mud, is a gypsum-based material commonly used in the construction industry for finishing joints between sheets of drywall. It is used to smooth out imperfections, create a seamless surface, and prepare the wall for paint or wallpaper.
Potential Challenges:
1. Adhesion Issues:
One of the significant challenges when it comes to applying drywall compound over wallpaper is adhesion. Wallpaper is typically designed to have a smooth, non-porous surface, making it difficult for the compound to adhere properly. This lack of adhesion may cause the compound to crack, peel, or detach from the wall over time.
2. Textural Differences:
Wallpaper often has various textures, patterns, and embossing. Applying drywall compound over wallpaper can result in an uneven, bumpy surface, as the compound may not be able to completely level out the textured areas. This can create an undesirable appearance and affect the overall finish of the wall.
3. Moisture Trapping:
If the wallpaper is not well-adhered to the wall or has underlying damage, moisture can seep through the compound and potentially lead to mold or mildew growth. Drywall compound is not designed to prevent or resist moisture, so trapping it between the wallpaper and compound can result in long-term issues.
Alternatives to Applying Drywall Compound Over Wallpaper:
1. Removing the Wallpaper:
One of the most effective and commonly recommended alternatives is removing the wallpaper entirely before applying drywall compound. Although it may be a time-consuming process, it ensures a clean, stable surface for further wall treatment. This can be achieved through methods such as steaming, spraying with a wallpaper remover solution, or using a scoring tool and stripper.
2. Covering the Wallpaper:
If removing the wallpaper is not feasible or desirable, another option is covering it with a new layer of drywall. This involves installing thin drywall sheets directly over the existing wallpaper. While it does add an extra layer of work, it provides a smooth surface for taping, mudding, and finishing. It is essential to consult with a professional or do thorough research before attempting this method, as it requires proper installation techniques and consideration of potential weight increase.
While it may seem tempting to apply drywall compound over wallpaper as a quick-fix solution, it is not recommended due to potential adhesion issues, textural differences, and moisture trapping. Removing the wallpaper or covering it with new drywall are viable alternatives that provide a more stable, aesthetically pleasing result. Remember to consider the time, effort, and expertise required for each method before deciding on the best course of action for your specific circumstances.