How to Avoid Yellowing and Maintain Clarity in Outdoor Memorial Stones

Choose the Right Resin for UV Stability

When casting memorial stones for outdoor use, opt for a clear epoxy resin with integrated UV stabilisation. Products such as “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm are specifically formulated to resist yellowing from sunlight exposure, helping your tribute remain pristine for longer. Always confirm the maximum pour thickness recommended for your chosen resin, as exceeding this can cause issues with curing and clarity.

Preparing and Sealing Printed Inclusions

Printed paper elements are susceptible to discolouration or ink-running when exposed to resin. To help protect embedded prints:

• Seal the printed message or image with a clear acrylic spray lacquer and allow it to dry completely.
• Apply at least two light coats on both sides to ensure full coverage.
• Only embed the print once it is fully dry and handled with clean gloves to avoid fingerprints.

Best Practices for Outdoor Clarity

For the clearest finish outdoors, pour resin in a shaded, dust-free environment and avoid working during humid or rainy weather. After curing, position the memorial stone where it will enjoy partial shade rather than direct, prolonged sunlight. This helps preserve both the resin’s transparency and any embedded details.