Common Mistakes to Avoid in Resin Shower Tray Construction

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What are common mistakes in resin shower tray construction?

Building a resin shower tray offers long-lasting durability and a modern look, but the process requires careful planning and precision. Avoiding common pitfalls is key to a watertight, hard-wearing result.

Surface Preparation – The Foundation of Success

One of the most overlooked aspects of resin shower tray construction is how thoroughly the base surface is prepared. Surfaces should be clean, free from dust, grease and debris, and ideally slightly roughened to promote adhesion. If old sealants or moisture are present, resin may not bond properly, leading to future cracks or leaks. Taking the time to sand the substrate and removing contaminants results in a stronger, more reliable bond.

Resin Application – Watch Your Pour Thickness

Pours that are too thick can trap heat and result in curing problems such as bubbling, cracking, or deforming. It’s important to follow manufacturer recommendations for maximum pour depth. For example, a product like Epoxytable 10-Ten is suitable for deeper pours up to 10cm, while shallower trays may benefit from staged pours using a resin such as EpoxyTable 5-Five. Layering resin allows heat to dissipate, reducing the risk of bubbles and warping.

Sealing Edges and Joints – Prevent Leaks

Inadequate sealing at the tray’s perimeter or around drains is a frequent cause of leaks in epoxy shower trays. Using a suitable silicone or sealing paste, carefully fill all gaps and transitions before pouring resin. Pay special attention to corners and where the tray meets the wall. A beginner’s kit such as the River-Table kit provides both sealant and instructions that can be adapted for this step, even if designed for other resin projects.

When This Matters Most

Getting these steps right is critical for high-traffic bathrooms, rental properties, or where water resistance is non-negotiable. A properly constructed tray will last far longer and require less maintenance over time.

Related guides

How To Build A Resin Shower Tray

By steering clear of common mistakes—rushing the groundwork, overpouring resin, and under-sealing—you can create a professional, resilient shower tray. For more in-depth guidance, explore our hub on how to build a resin shower tray.