• Acrylic dispersion tile primer and cement additive, two jobs in one
• As a primer: stabilises porous and dusting surfaces before tiling
• Improves adhesion on difficult substrates like vinyl tiles, timber, asphalt and terrazzo
• Prevents swelling of timber, plasterboard and MDF
• As an admix: improves flexibility and adhesion of cement adhesives and grouts
• 1 L and 5 L

First, decide how you are using it. As a primer, shake the bottle and apply a single coat to the substrate, ensuring complete coverage.

Next, as a primer, allow it to become tack free before tiling. If it is left overnight before tiling, apply a second coat.

Then apply the adhesive and tiles as normal.

Finally, as an admixture, add up to 5 litres per 20 kg bag of adhesive or grout, noting that high dosages can affect the setting time of some products. For a general SBR bonding and gauging admix, see our SBR Admixture.

• Product code: BDTAP
• Type: acrylic dispersion tile primer and cement additive
• As primer: stabilises porous/dusting surfaces, improves adhesion on vinyl, timber, asphalt, terrazzo
• As admix: up to 5 L per 20 kg bag of adhesive or grout
• Benefit: improves flexibility and adhesion where there is slight movement or vibration
• Sizes: 1 L and 5 L

Is it a primer or an additive?

Both. Use it neat as a primer before tiling, or add it to cement-based adhesives and grouts as an admixture to improve flexibility and adhesion.

What does it prime?

Porous and dusting surfaces, and difficult substrates such as vinyl tiles, timber, asphalt and terrazzo. It also helps prevent swelling of timber, plasterboard and MDF.

How do I use it as a primer?

Shake, apply a single coat for complete coverage, and let it become tack free before tiling. If you leave it overnight before tiling, apply a second coat.

How much do I add as an admix?

Up to 5 litres per 20 kg bag of adhesive or grout. High dosages can affect the setting time of some products, so follow the adhesive guidance.

Why add it to adhesive?

It improves the flexibility and adhesion of cement-based adhesives and grouts, which helps where the substrate is subject to slight movement or vibration.

How is it different from SBR Admixture?

Primer Admix is an acrylic dispersion aimed at tiling, as a primer or additive. SBR Admixture is a styrene-butadiene bonding and gauging agent for mortars, screeds and renders. Choose by the job.