Fixing Bubbles or Streaks After Resin Curing on Bathroom Walls

Q: Fixing Bubbles and Streaks: Step-by-Step

Sanding: For minor bubbles or streaks, gently sand the affected area with fine-grit sandpaper once the resin has fully cured (typically after 48 hours). This will smooth out raised defects without damaging the whole surface. Recoating: After sanding, wipe away any dust with a damp cloth and apply an additional thin layer of resin to achieve a uniform finish. Products such as Vertical Glass can be recoated to restore a flawless look and enhance waterproofing. For deeper defects, several cycles of sanding and recoating might be needed. Always follow manufacturer instructions for cure times between layers.

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What if I spot bubbles or streaks after curing?

Discovering bubbles or streaks once your resin-coated bathroom wall has cured can be frustrating, but most defects are straightforward to put right with a little care and the right approach.

Common Post-Cure Defects and Causes

Bubbles in a resin finish often form if air becomes trapped during mixing or application. Streaks, meanwhile, can develop from uneven spreading or improper mixing of pigments. Both issues are more likely if resin is spread too thickly or if the product hasn’t been carefully handled during the application phase.

Fixing Bubbles and Streaks: Step-by-Step

Sanding: For minor bubbles or streaks, gently sand the affected area with fine-grit sandpaper once the resin has fully cured (typically after 48 hours). This will smooth out raised defects without damaging the whole surface.
Recoating: After sanding, wipe away any dust with a damp cloth and apply an additional thin layer of resin to achieve a uniform finish. Products such as Vertical Glass can be recoated to restore a flawless look and enhance waterproofing.

For deeper defects, several cycles of sanding and recoating might be needed. Always follow manufacturer instructions for cure times between layers.

Practical Tips for Future Applications

Minimise bubbles by mixing resin slowly and carefully.
Address any bubbles immediately during application—use a gentle torch pass or pin for surface bubbles.
Work in thin, even coats to prevent streaks, and always use clean tools.

When This Matters

Post-cure defects can affect not only the look but also the durability of your bathroom wall finish, particularly in high-moisture environments. Swift correction helps preserve both appearance and protection.

Related guides

How Do You Apply Resin To Bathroom Walls

Tidying up bubbles or streaks after resin curing is a manageable part of achieving a professional finish on your bathroom walls. For more tips on seamless application and restorative techniques, explore our full guide on How do you apply resin to bathroom walls?