STONETECH Heavy Duty Exterior Sealer is a solvent based, penetrating sealer which offers advanced stain protection and weather resistance on natural stone, masonry and grout surfaces. Designed specifically to meet the challenges of exterior applications, STONETECH Heavy Duty Exterior Sealer minimizes efflorescence and repels water.

• Advanced protection against water-based stains
• Protects natural stone, masonry and grout
• Minimizes efflorescence and repels water
• Provides weather resistance
• Solvent-based formula