Epoxy vs. Polyurethane—what’s the difference?

Epoxy Mastics: Durable Bonding for Restoration Work

Epoxy mastics are favoured for their mechanical strength and suitability for repairing or bonding stone, metal, and cement. They provide long-lasting results, making them ideal for restoration projects where a tough, reliable finish is required. Thanks to their thixotropic properties, epoxy mastics are well-suited for vertical surfaces, minimising sagging and shrinkage when applied on walls or monuments.

For those seeking a proven solution, “Magelstick” epoxy mastic is widely used in expert restoration, offering weather resistance for both indoor and outdoor environments.

Polyurethane Binders: Outdoor and UV Stable Choices

Polyurethane binders shine when it comes to external applications, particularly for creating decorative aggregate surfaces such as pebble or stone flooring. They offer strong adhesion to stones and resist yellowing from sunlight, making them the preferred option for projects exposed to frequent UV and weather changes.

Products like the “Polirock” polyurethane binder deliver a clear, anti-slip finish especially suited to outdoor stone paving or garden paths.

When This Distinction Matters

• Restoration and repairs indoors or on delicate stonework? Epoxy is typically your best bet.
• Outdoor surfaces needing durability, clarity, and weather resistance? Polyurethane offers important UV stability for long-term results.