See Tools and Colourants in Action

Visualise how professional mastic and pigment options combine to deliver a seamless, colour-matched grout for marble. Testing on sample pieces first ensures you achieve your preferred colour intensity every time.

Step 2: Mix the Epoxy Mastic Base

Following the manufacturer’s guidelines, mix your chosen epoxy mastic and hardener in the specified ratio—many epoxy mastics, like Magelstick Epoxy Mastic, require a 100:50 base to hardener ratio. Use a clean mixing cup and spatula, stirring until you achieve a consistent blend without unmixed streaks.

Only prepare as much mixture as you can use within the pot life stated by the manufacturer, as coloured epoxy can set quickly in warm or humid conditions.

Step 4: Apply the Coloured Resin Grout

With the mixture ready, press the coloured epoxy mastic firmly into the grout lines using a suitable tool (spatula or trowel). Work methodically along each joint to fill any voids, ensuring full contact with the marble edges and a smooth, even surface.

Remove any excess grout from the marble surface before it cures, using a damp, lint-free cloth. Carefully remove protective tape for sharp, clean lines. Allow the grout to cure fully as per product instructions—avoid disturbing the area until the curing period is complete.

Expert Guidance for Flawless Results

Work efficiently with pre-measured batches and always cap your dye and mastic containers promptly to maintain freshness. If in doubt, consult our colourant range for inspiration on marble-specific shades and effects.