FS MASTIC SOFT
UV-stable two-component polyester filler shields stone joints from stains, available in matching hues.
Description
FS MASTIC SOFT is a two-component adhesive composed of unsaturated polyester resin dissolved in styrene, with added mineral fillers. It is specifically designed for bonding natural and engineered stones. Its soft consistency makes it particularly suitable for vertical surface applications, delivering a seamless, defect-resistant finish that machines, sands, and polishes to a perfect sheen.
Cleanup is simplified by using Epoxy Remover to clear tools of residual resin.
Downloads
Areas of Application
Marble Flooring Joints
Natural Stone Wall Cladding
Granite & Quartz Countertop Seams
Bathroom & Kitchen Tile Joints
Outdoor Stone Paving & Pool Surrounds
FAQs
Is FS MASTIC SOFT waterproof after curing?
Yes, once fully cured, FS MASTIC SOFT forms a moisture-resistant seal suitable for bathroom stone repairs, kitchen countertop restoration, and outdoor stone cladding, providing long-lasting waterproof stone adhesive performance.
How do I clean tools after using FS MASTIC SOFT?
Immediately remove excess mastic and clean tools with an Epoxy Remover before the resin cures. This prevents hardened residues and maintains your stone repair tools for flawless marble adhesive applications.
Is FS MASTIC SOFT waterproof after curing?
Yes, once fully cured, FS MASTIC SOFT forms a moisture-resistant seal suitable for bathroom stone repairs, kitchen countertop restoration, and outdoor stone cladding, providing long-lasting waterproof stone adhesive performance.
How should I prepare my stone surface before applying this polyester resin filler?
Ensure the area is clean, dry, and lightly abraded to remove dust and grease. Proper surface prep maximizes adhesion strength and durability for stone wall bonding, vertical marble repairs, and natural stone joint sealing.
How do I mix FS MASTIC SOFT with hardener?
Blend 1 to 4 g of soft hardener per 100 g of mastic until color is uniform. Proper mixing ensures optimal adhesion strength, fast curing time, and superior performance for stone crack repair and engineered stone adhesive applications.
Can I tint FS MASTIC SOFT to match my marble or granite?
Yes. Add up to 5 % polyester colour paste to achieve precise color matching for marble countertop repair, granite joint filling, or engineered quartz bonding. This produces seamless stone filler finishes on any surface.