← Back to how to make a DIY resin floor

Correctly preparing the substrate is crucial to achieve a durable, attractive, and trouble-free DIY resin floor. Taking the right steps will help your resin adhere properly and last for years.
Cleaning and Surface Assessment
Begin by thoroughly cleaning the entire floor. Sweep or vacuum to remove all dust and debris. Oil stains, grease, and existing residues should be treated with a suitable cleaner, as any contamination can affect resin bonding. Once clean, check the surface for any cracks, holes, or irregularities. These should be repaired with a compatible filler or levelling compound and allowed to cure fully before moving on.
The Importance of Priming
Applying a high-quality primer is highly recommended for the best results. Priming enhances the bond between the substrate and your resin, helping to prevent bubbles and issues with adhesion. For solid bases such as concrete, timber, screeds, or tiles, a universal water-based primer like Epoxyprimer provides strong adhesion and a reliable foundation for your resin coat. Use a roller, brush, or spatula, and follow the product’s drying time before proceeding.
When Careful Preparation Matters Most
Preparing the substrate is especially important for DIY installers or when working over mixed materials (such as old tiles plus concrete patches). Proper cleaning, repair, and priming reduce risks of lifting, peeling, or uneven curing in both decorative resin and tougher jobs like permeable outdoor floors using washed pebbles or coloured grits.
Related products
Related guides
Giving proper attention to substrate preparation sets the stage for a successful DIY resin floor, whether it’s a seamless indoor finish or a durable, permeable outdoor surface. For more detailed guidance on the full process, see our DIY resin floor guide.
Google