Best Materials for Skimcoating and Repairing Lath and Plaster Walls Before Installing Backsplash Tile
Introduction
When preparing a lath and plaster wall for a backsplash tile installation, ensuring a smooth, uniform surface is crucial. Whether it's a matter of skimcoating or repairing uneven surfaces, the right materials can make all the difference. This guide explores the best approaches and materials for this critical step in any kitchen renovation project.
Choosing the Right Mortars and Adhesives
To achieve a smooth, cohesive surface for your backsplash tile, the first step is ensuring your lath and plaster is clean and sound. A modified tile mortar with added latex can effectively bond and level the surface. For example, Mapei offers a range of specialized mortars designed for both vertical applications and high bonding rates, making it an excellent choice for any application, whether interior or exterior.
Tackling Dirty Surfaces with Primers and Additional Solutions
If you encounter oil and dirt embedded in the plaster, it's essential to clean the surface thoroughly. Applying a Kilz primer coating can help seal the surface and protect against any oils behind it. This step is crucial as decades of cooking can fill the plaster with microscopic oils and dirt. Additionally, for a more permanent solution, removing the plaster and installing a thin piece of drywall might be necessary, followed by sealing the edges with silicone caulk.
Addressing Long-Lasting and Unreliable Lath and Plaster Structures
Given that lath and plaster walls are often more than 50 years old, they might be nearing the end of their useful life. Considering the creation of a backsplash implies the potential for water and plumbing, it's wise to upgrade all kitchen plumbing and electrical systems to current standards. Additionally, if you plan to renovate, replacing old lath and plaster with new studs and drywall might be the most efficient approach. Ensure all electrical work is up to code and accessible for inspection.
Improving Wall Surfaces with Joint Compound and Backer Boards
Even with the best mortars and adhesives, walls with significant unevenness may require additional steps. Joint compound or spackling paste can help even out minor imperfections. In some cases, a thicker application of polymer thinset mortar or even powergrab (a heavy-duty adhesive) can help achieve the desired consistency. For severely uneven walls, installing a backer board can provide a stable, level foundation for tiling.
Conclusion
Preparing a lath and plaster wall for a backsplash installation involves careful planning and the use of the right materials. From choosing the appropriate mortar and primer to considering the age and condition of the wall, each step is crucial for a successful and long-lasting installation. Whether you're a DIY enthusiast or working with professional help, this guide will serve as your essential resource.
Key Takeaways
Skimcoating: Use modified tile mortar with added latex for best results. Primer Application: Apply Kilz primer to seal and protect the surface. New Wall Construction: Consider replacing old lath and plaster with studs and drywall for better durability and ease of installation.For further detailed advice, consider consulting local professionals or seeking a free evaluation from experienced tradesmen.