Should Old Floor Resin Be Removed Before Recoating?

Do I Need to Completely Remove Old Resin Before Recoating?

When it’s time to refresh a resin floor, many wonder whether it’s necessary to remove the old resin completely before applying a new coat. The approach depends on the state of the existing surface and how well it’s adhered.

Assessing Your Existing Resin Floor

Start by carefully inspecting the current floor. If the resin layer is sound, firmly bonded, and shows no major signs of damage—such as cracking, delamination, or extensive surface wear—there’s usually no need to strip it back entirely. Minor surface imperfections like light scuffs or loss of gloss can be renewed with careful prep and recoating.

How to Prepare for Recoating

For best adhesion, the old resin needs to be lightly sanded to remove contaminants and provide a key for the new layer. Use appropriate sanding equipment to create a uniform, matt surface and thoroughly clean away any dust. After sanding, applying a specialised primer can further improve bonding. Epoxyprimer is a water-based epoxy floor primer suitable for a range of substrates including concrete, ceramic, screed, and timber—a prudent step for stable, durable finishes.

When Complete Removal is Needed

You should consider a full removal of the old resin if the floor has widespread delamination, deep cracks, or sections where the resin is lifting. Addressing these issues ensures the new coating will bond properly and perform as expected over time. Damaged areas may need to be ground back to a sound base before starting anew.

When This Matters

Proper preparation is vital for achieving long-lasting results—especially in high-traffic areas or spaces where a flawless appearance is needed. Overlooking surface flaws or poor adhesion can lead to further problems down the line.

Related guides

How To Renew Floor Resin

Refreshing your resin floor doesn’t always mean starting from scratch. By preparing the old surface correctly, you set the stage for lasting results. For more floor renewal guidance, explore our parent guide on how to renew floor resin.