Guide to Tiling Straight on Plasterboard: An In-Depth Look

Created by Mark Hilton, Modified on Wed, 23 Oct, 2024 at 9:46 AM by Mark Hilton


Are you questioning, "Can you tile straight on plasterboard?" Well, the answer is yes, and we're here to guide you. This in-depth guide will shed light on the process of tiling on plasterboard, supplying you with all the necessary knowledge.

Preparation of Plasterboard for Tiling

Proper groundwork is the secret to a successful, enduring tile installation on plasterboard. Here are some pivotal considerations:

1. Opting for the Correct Plasterboard:

It is crucial to select a plasterboard specifically crafted for tiling. Plasterboards reinforced with fibreglass or cementitious materials offer superior tile support.

2. Assessing the Plasterboard Condition:

Before you commence tiling on plasterboard, scrutinise the plasterboard's condition. It should be securely affixed, free from cracks, and firmly attached to the wall. Mend or substitute any damaged or loose areas before tiling.

3. Opting for Moisture Resistant Plasterboard:

For moisture-prone areas like kitchens or bathrooms, choose moisture resistant plasterboard. It's designed to resist humidity, preventing water damage and prolonging your tiles' lifespan.

4. Contemplating Plasterboard's Weight Restrictions:

Plasterboard has weight restrictions that mustn't be ignored when tiling. Overstepping these limits can lead to structural issues and potential tile failure. Always verify the manufacturer's guidelines for the maximum weight the plasterboard can bear.

Maximum Weight Recommended: The maximum weight of tiling per m2 on Gypsum Plasterboard direct (without a plaster skim) is 32kg/m2, once a plaster skim has been applied, the weight limit is reduced to 20kg/m2. When calculating the weight of any tiling, the adhesive and grout must also be considered.

Adhesive and Grout Calculation: The adhesive and grout should be calculated at 3kg/m² and added to the total weight of the tiles.

Process of Tiling Straight onto Plasterboard

Follow these steps for a successful tile installation on plasterboard:

1. Applying Adhesive:

Begin by preparing the plasterboard surface with a suitable tile adhesive. It should be specifically designed for plasterboard to provide the necessary strength and bonding properties. Use a notched trowel to spread the adhesive evenly, ensuring full coverage.

2. Placing Tiles:

Next, start placing the tiles, beginning with the first tile in the desired position. Use tile spacers to maintain consistent spacing. Press the tile firmly into the adhesive, ensuring it is level and well-bonded.

3. Fixing Tiles:

Continue laying tiles, working in small sections. Apply adhesive to each tile's back and press it firmly into place, using a slight twisting motion for a good bond. Trim any tiles to fit around edges or obstacles using a tile cutter or saw.

Always check that the tiles are level and adjust as needed. Allow the adhesive to dry completely before grouting.

4. Calculating Grout and Adhesive:

Calculate the amount of grout and adhesive needed based on the size and spacing of the tiles. This will ensure you have enough materials for the entire tiling project. Remember to include the weight of the adhesive and grout in the overall weight calculation.

Visit Tile Giant for a wide range of high-quality tiles and tiling accessories to ensure a professional finish to your project.

Considerations Post Tiling Straight onto Plasterboard

Keep these key considerations in mind to ensure a long-lasting tile installation on plasterboard:

Grouting Tiles: Grouting enhances the appearance of your tiles and shields them from moisture and dirt. Use a flexible grout to accommodate the plasterboard's slight movements, preventing cracks and ensuring longevity.

Preserving Tile and Plasterboard Integrity: The correct adhesive, along with adherence to the manufacturer's instructions, maintains the integrity of the tiles and plasterboard. A high-quality adhesive specifically designed for plasterboard will ensure a strong bond and minimize the risk of tiles becoming loose over time.

Tiling Over Painted Plasterboard: 

Paint can be a tricky barrier between your tiles and a beautiful finish. We recommend removing it altogether for a stronger bond. Emulsion, lime-wash, and distemper are especially notorious for letting tiles down.

Removing the Paint:

  • Strip it: A wallpaper stripper with steam is a gentle giant for most emulsion paints.
  • Scrap with Care: If scraping is your method, be extra cautious not to gouge the plasterboard's paper face.
  • Keep it Clean: Once the paint is gone, wipe away any dust or leftover debris.
  • Helping Adhesion: Use sandpaper or a sander to create a slightly rough surface. This helps the tile adhesive grab on tight.
  • Prime Time (for Plaster Only): If you're tiling directly onto plaster, apply a primer to prevent bonding problems with cement-based adhesives.
  • On a Deadline? Removing paint can be a time-consuming task. Consider using a tile backer board like No More Ply! This creates a stable surface for tiling and can be quickly installed to replace any plasterboard.

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