Which binder should I use for aggregate mixes from a grinder?

What Makes a Good Binder for Aggregate Mixes?

For a strong, long-lasting finish, a transparent epoxy binder is often preferred as it accentuates the natural colours of the aggregates. A good binder must thoroughly impregnate and hold together the mix without clouding or yellowing over time. Opting for a low-viscosity formula ensures even coverage and helps the binder flow easily around the grits or pebbles, preventing weak spots in the final surface.

How to Use a Transparent Epoxy Binder

To achieve the best results, thoroughly mix the transparent binder with your prepared aggregate blend before spreading it on your surface. For example, “Trasparente” Epoxy Binder is designed for this purpose, offering a crystal-clear finish. Typically, about 3% binder by weight is added to the stone mix—always refer to the specific product instructions for accurate ratios and mixing times. After combining, apply evenly and allow it to cure undisturbed, ensuring the surface remains permeable where required.

When Binder Choice Matters Most

• For outdoor paths and decorative driveways, UV stability is vital so the resin won’t yellow in sunlight.
• If you use dark or coloured aggregates, a clear binder keeps the finish vibrant and natural.
• Low toxicity after curing is important where the flooring will be touched or walked on barefoot.