Can You Tile on a Finished Plaster Wall in a Shower? A Comprehensive Guide
Many homeowners hesitate to tile a shower against a finished plaster wall due to concerns about waterproofing and potential water damage. However, with the right preparation and techniques, it is indeed possible to create a waterproof and aesthetically pleasing tiled shower area. In this guide, we will explore the best practices and necessary steps to ensure your tiled shower is both water-tight and visually appealing.
Introduction to Shower Tiling on Plaster Walls
The process of tiling a shower on a finished plaster wall requires a thorough understanding of waterproofing methods and materials. The key to success lies in preparing the surface correctly and applying reliable waterproofing layers before starting the tiling. This guide aims to provide you with the necessary information and techniques to achieve a successful water-tight tiled shower.
Preparation and Planning
1. Marking the Extent of Tiling: Before beginning any work, mark the exact extent of the tiling directly onto the finished plaster wall using a light pencil. This will help in maintaining the neatness and accuracy of the tiles when installed.
2. Waterproofing: Application of a reliable waterproofing membrane is crucial. Redguard, a popular choice, is a two-component epoxy-based product known for its robust waterproofing properties. A minimum of two coats of Redguard should be applied to ensure complete coverage. For areas that will experience significantly more water exposure, such as the wet zone, an additional third coat is recommended.
Applying Redguard for Waterproofing
1. Application Technique: Proper technique is essential for an effective waterproofing layer. Clean the plaster wall surface thoroughly to remove any dust, debris, or excess paint. Once the surface is dry and free of contaminants, begin applying Redguard. Use a roller or trowel to ensure even distribution and a smooth application. Allow each coat to dry before applying the next, as specified in the manufacturer's instructions.
2. Transition Areas: Pay special attention to the transition areas, particularly at the base of the wall, where water can seep through damaged or unsupported areas. These zones require multiple coats of waterproofing and possibly additional reinforcements to ensure maximum protection.
Additional Waterproofing Measures
1. Sealing Joints: Proper sealing of joints is essential to prevent water from finding its way under the tiles. Ensure that all grout lines are filled and sealed using a specialized waterproofing grout sealer. Additionally, consider using a silicone-based sealant around the edges of the shower pan, as this can provide an extra barrier against water leaks.
2. Professional Installation: For added security, consider hiring a professional for the tiling process. They will have the expertise and experience to ensure that every detail is perfectly executed, reducing the risk of future water-related issues.
Alternative Materials
Villa board is another option that can be used in conjunction with or instead of waterproofing membranes. Villa board is a pre-primed, pre-erected, and pre-sanded tile substrate designed specifically for shower installations. It offers several advantages, such as easy installation, built-in waterproofing, and a seamless surface. While it can be a cost-effective alternative, it is important to ensure that it is installed properly and meets all necessary waterproofing standards.
Conclusion
In summary, while tiling a shower directly onto a finished plaster wall is possible, it requires careful planning, precise application of waterproofing materials, and possibly additional seals and reinforcements. With the right approach, you can enjoy a safe and attractive tiled shower without the worry of water damage. Remember, proper preparation and the use of reliable waterproofing products are key to a successful outcome.