What Primer To Use Before Tiling
08/09/2025When preparing for a tiling project, knowing what primer to use before tiling is essential. The right tile primer forms the critical base that enhances adhesion, prevents failures, and ensures your tiling installation lasts.
What Is Tile Primer?
A tile primer is a specially formulated bonding agent applied before tiling. It creates a uniform substrate that strengthens the tile adhesive bond and stabilises the surface. Primers help mitigate surface irregularities, reduce porosity, and improve adhesion, especially on challenging materials like concrete, screed, or old tile surfaces.
Read more: The Best Adhesives For Tiling Over Tiles
Why Use a Primer Before Tiling?
If you're asking, "do I need to use primer before tiling?", the answer is almost always yes, especially on porous or uneven surfaces like untreated concrete or plasterboard. Without a high-quality tile primer, your tile adhesive may not bond properly, which can cause tiles to lift or delaminate, and leave your floor or wall vulnerable to moisture.
Read more: Can You Tile Onto Plasterboard?
Types of Tile Primer
There are three main types of primer for tiling: polymer or slurry. Here’s a little more information on both kinds:
Acrylic / Polymer-Based Primers: Versatile and suited for most internal surfaces, offering improved adhesion and moisture resistance.
Slurry Primer: A thicker, cementitious mix for porcelain tile primer or exterior applications. Ideal when installing over uneven or non-absorbent surfaces.
PVA Primer: Ideal for priming unsound surfaces prior to plastering or painting, as an adhesive on wood, cork, textiles and most applications where at least one surface is porous.
Best Tile Primers
It can be difficult to pick the best primer for tile that works for your commercial or domestic project needs. Here’s a guide on some popular options:
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