Rust-Oleum Mathys Fillcoat Waterproofing Leak Repair Coating

Mathys Fillcoat Waterproofing is a thick, elastic paint that is waterproof instantly, for repairs to roofs, non-walkable terraces, gutters, ridges, chimney stacks and pipes.

Key features

• Stops leaks instantly
• Thick, elastic waterproof coating with excellent adhesion to many substrates
• Can be applied in all weather conditions except snow
• Improved UV resistance and water-repellent properties
• Brush, roller or airless; do not dilute

Where to use it

After cleaning, Fillcoat goes directly onto bituminous substrates, hard PVC, polyester, zinc, aluminium, glass and tiles. Porous materials (concrete, stone, wood) must be dried and primed with Primer 44HS. For repeatedly repaired spots or significant or active cracks, reinforce with Dacfill fleece bedded between two coats. It can be recoated with Dacfill, Coating PRT or Dacfill HZ. Never apply to polystyrene insulation or to concrete less than 2 years old, and do not use it as a primer under Dac Hydro Alu.

Technical details

• Theoretical coverage 1 m²/litre at 430 µm dry (1000 µm wet); apply 2 coats with Dacfill fleece
• Touch dry 4 hours; recoat after 3–14 days with Fillcoat, or 6 weeks with a paint
• Satin finish; density 1.03 g/cm³; VOC 485 g/l
• Airless nozzle 18–23 at 220 bar; clean up with Thinner 22 or white spirit

Preparation

Carefully remove dust, mud, grease, moss and dead leaves. Clean the areas to be repaired with a hard broom and sponge.

Download the official Fillcoat Waterproofing technical data sheet (PDF). Read the safety data sheet and the pack label before use.