Can I use any grout type under resin?

Types of Grout Compatible with Resin Coatings

Both cement-based and epoxy grouts are generally suitable for use beneath resin coatings. Cementitious grout is the traditional choice and is widespread in tiling, while epoxy grout offers enhanced durability and water resistance. Whichever option you select, it’s crucial that the grout is completely cured before proceeding with resin application. Ensure the grout joints are free from dust, oils, or any residues that could compromise adhesion and finish.

Preparing for the Resin Application

Careful preparation ensures the final resin coating adheres securely to the tiled surface. After the grout has cured fully, clean the area thoroughly to remove any traces of haze or efflorescence. Using a primer, such as Epoxyprimer, can further improve adhesion for your resin layer. It’s advisable to follow the specific drying times and recommendations for any priming products or resin you choose.

When Grout Choice Matters Most

• If the tiling is in high-moisture areas or exposed to heavy traffic, epoxy grout may be preferable for its resistance to water and chemical exposure.
• Cement-based grouts, while versatile, should be sealed if there’s any chance of water ingress before the resin is applied.
• Always allow the grout to cure according to the manufacturer’s instructions—rushing this step can result in issues beneath your resin finish.