Are you in need of a durable floor primer? How about an easy to use moisture barrier? Look no further than to Bona R540. This innovative product from Bona is a one-component roll-on primer and moisture membrane. That’s right, Bona R540 doubles as both a primer and moisture barrier. So you get two products in one!

 

Why do I need a moisture barrier?

Moisture barriers mitigate potential moisture issues that come with wood floors. Excess moisture in your subfloor can weaken the adhesive. This causes wooden floors to be loose and prone to shifting. Other harmful effects of too much moisture include:

  • Cupping - when the center of the board falls lower than the edges.
  • Crowning - when the center of the board raises higher than the edges.
  • Mold

Luckily for you, Bona R540 is here is combat those problems. Bona R540 is specifically designed to reduce as much vapor transmission on absorbent and non-absorbent subfloors as possible. 


With its roll-on application, you can easily apply it on any surface. This means you don’t have to deal with the fuss and frustration that come with using flimsy paper or seams. Bona R540 provides more uniform coverage and moisture protection than any other moisture barrier on the market.


Bona R540 is an economical choice. You will only need one coat when used with a 1250 or 1500 trowel and any Bona Silane Adhesive. needed when used with 1250 or 1500 trowel and any Bona Silane Adhesive

Why do I need a primer?

Floor primers are important for any wood floor installation project. They improve the adhesion of leveling compounds to subfloors as well as increase durability. The use of a primer means a more secure installation.


With Bona R540, you will only need one coat. This dynamic primer increases adhesion over sealed subfloor systems. Also, it helps create a finer finish. Even better, the multi-purpose Bona R540 is compatible with the entire Bona Adhesive System.

Still not convinced? Here are some superb features of Bona R540:

  • A great substitute for felt paper when needed as a vapor retarder for wooden subfloors with up to 20% MC.
  • Quick-drying product. This allows nail-down installation immediately after application.
  • Suited for underfloor heating. 
  • Excellent for damp-proofing concrete or cementitious subfloors.