Can You Put Tile On Plaster Walls In A Shower

Can You Put Tile on Plaster Walls in a Shower?

Renovating your bathroom can be an exciting project, but when it comes to tiling shower walls, the choice of substrate can be crucial. Plaster walls, a common feature in older homes, present unique challenges when it comes to tiling. Here's a comprehensive guide to help you understand the feasibility and process of tiling over plaster walls in a shower:

Suitability of Plaster Walls for Tiling

Plaster walls, composed of a mixture of lime, gypsum, or cement, are generally not ideal substrates for tiling. The porous and soft nature of plaster makes it susceptible to moisture penetration, which can lead to cracking, blistering, or tile detachment. Additionally, the uneven surface of plaster walls can make it difficult to achieve a consistent tile installation.

Factors to Consider

Before committing to tiling over plaster walls, several factors should be considered:

Condition of the plaster: Inspect the plaster walls for any signs of damage, such as cracks, holes, or crumbling. Extensive damage may require repair or replacement.
Moisture exposure: Showers generate significant moisture, which can be detrimental to plaster walls. Proper waterproofing measures and ventilation are essential to minimize moisture penetration.
Tile size and weight: Larger and heavier tiles exert more stress on the wall, increasing the risk of damage. Consider using smaller and lighter tiles to reduce the load.

Tiling Process

If, after considering the factors above, you decide to tile over plaster walls, follow these steps carefully:

Prepare the wall: Remove any existing tiles, fixtures, or hardware. Clean the surface thoroughly and repair any damage.
Install backer board: Apply a layer of moisture-resistant backer board over the plaster wall. This provides a stable and waterproof surface for tiling.
Apply waterproof membrane: Install a liquid-applied or sheet membrane over the backer board to create a watertight barrier.
Tile installation: Using appropriate thinset mortar, carefully install the tiles over the membrane. Ensure proper spacing and alignment.
Grout and seal: After the tiles are set, apply grout and seal the joints to prevent moisture penetration.

Precautions and Maintenance

To ensure the longevity and durability of tiled plaster walls in a shower, follow these precautions and maintenance tips:

Ventilation: Ensure adequate ventilation in the bathroom to prevent excessive moisture buildup.
Regular cleaning: Clean the tiles and grout regularly using non-abrasive cleaners.
Inspect for leaks: Regularly check for leaks in plumbing fixtures and the shower enclosure.

While tiling over plaster walls in a shower is possible, it requires careful planning and execution. By following these guidelines and considering the factors mentioned above, you can achieve a successful and durable tile installation that will enhance the aesthetics and functionality of your bathroom.