What PVA mix for cement boards

We’ve just had a media wall built using cement boards as we intend to apply brick slips on it.  Some of the boards were fitted with the ‘tile on this side’ reversed, so has a slightly rougher finish. What mix ratio of PVA should we use to prep it for the brick slips?


  • FreeBear
    FreeBear Posts: 14,230
    First Anniversary First Post Name Dropper Photogenic
    Personally, I'd recommend a primer such as BAL, or even SBR rather than PVA.
    Her courage will change the world.

    Treasure the moments that you have. Savour them for as long as you can for they will never come back again.
  • longwalks1
    longwalks1 Posts: 3,701
    First Post First Anniversary
    Thanks FreeBear, only reason I said PVA was the website I ordered the slips from had PVA listed in their ‘accessories’ section along with adhesive, mortar and 10mm spacers etc
  • stuart45
    stuart45 Posts: 3,799
    First Anniversary Name Dropper First Post
    SBR is better than PVA in areas likely to get slightly damp. If you do use PVA, a mix of 3 or 4/1 water/PVA.
Meet your Ambassadors


  • All Categories
  • 341.6K Banking & Borrowing
  • 249.7K Reduce Debt & Boost Income
  • 449K Spending & Discounts
  • 233.7K Work, Benefits & Business
  • 605.8K Mortgages, Homes & Bills
  • 172.3K Life & Family
  • 246.5K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 15.8K Discuss & Feedback
  • 15.1K Coronavirus Support Boards