What Thickness of Plasterboard Is Best for Tiling Walls?

Learn the recommended plasterboard thickness for tiling and how to choose the right type for moisture-prone areas and heavy tiles.

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When preparing to tile, the recommended thickness for plasterboard is at least 12.5mm if it's being attached to stud walls. For areas prone to moisture, such as bathrooms, consider using a water-resistant plasterboard. It's crucial to ensure the wall can support the weight of the tiles plus adhesive and grout. For heavier tiles, like large format or natural stone, it might be safer to use a backing board designed for tiling to ensure adequate support.

FAQs & Answers

  1. What thickness of plasterboard is recommended for tiling? A plasterboard thickness of at least 12.5mm is recommended for tiling on stud walls to provide sufficient support.
  2. Should I use water-resistant plasterboard in bathrooms? Yes, in moisture-prone areas like bathrooms, it's best to use water-resistant plasterboard to prevent damage and mold growth.
  3. Can I tile directly on standard plasterboard? You can tile on standard plasterboard of 12.5mm thickness, but for heavier tiles or wet areas, a backing board or water-resistant board is advisable for better support.

Watch More

For more guidance on wall preparation and tile installation, explore our videos on selecting the right tile adhesive, waterproofing bathroom walls, and installing large format tiles safely.

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