Lightweight Wetroom Tile Backer Board for Walls & Floors

XtraBacker tile backer board is ideal for wall tiling as it offers a dimensionally stable wall background which is both strong and water- resistant, preventing moisture absorption and mould growth 

Ideal as an alternative to using plywood or plasterboard in a wetroom or bathroom, water-resistant construction board like Xtrabacker is an improved water-tight solution. Unlike plywood, Xtrabacker does not deteriorate if it absorbs moisture. Instead, it creates a water-resistant foundation upon which to lay your tiles and natural stone.  

Being extremely versatile, Xtrabacker construction board can be used on walls and floors and can be used as insulation in combination with underfloor heating. 

BS 5385 Part 1:2008 states that tiling directly to plywood is no longer recommended for wall tiling’

Want to Order Our Xtrabacker Product?


XtraBacker Construction Board Features

  • Lightweight and Strong
  • Water Resistant
  • Thermal Protection
  • Wall and Floor Solutions
  • Compliance with BS 5385 Part 1:2018
  • Fire Resistant Class E (EN 13501-1)
  • Lifetime Guarantee
  • Trimmable


Construction Board / Tile Backer Board FAQs 

What are tile backer boards? 

Tile backer board, or construction board, is used to provide a level, waterproof surface on which to lay tiles. Water-resistant construction board like XtraBacker is used to prevent water from reaching the surface behind the boards, ensuring your wetroom installation is completely dry and mould-free.  

As they are so versatile, water-resistant tile backer boards are increasing popular – they can be used on both walls and floors and are often used as an insulation board in combination with underfloor heating. 

What is the best tile backer board? 

The best tile backer board, in our opinion, is one that provides optimal water-resistance to ensure your tiling stands the test of time. The new BS 5385 Part 1:2008 regulations recommend that “the use of sheets or boards that are subject to movement from changes in moisture content” (such as plasterboard and plywood) should be excluded from use within these wet areas. 

Is tile backer board necessary? 

If you want your wetroom to last and be completely waterproof, then a water-resistant construction board like Xtrabacker should be used in combination with our other waterproofing productsFind out more about the benefits of tile backer boards in a wetroom. 

Can I tile directly on plywood? 

In wet areas, we would not recommend tiling directly onto plywood – in fact, BS 5385 Part 1:2008 states that tiling directly to plywood is no longer recommended for wall tiling’. This is because plywood can deteriorate if moisture gets through.