Rust-Oleum Mathys Dacfill Waterproofing – High-Performance Roof Protection

Rust-Oleum Mathys Dacfill is a durable, professional-grade waterproofing membrane designed for sloped roofs. Suitable for surfaces like bitumen, cement, asphalt, plastics, and more, it forms a watertight, elastic, high-build coating that resists UV rays, acid rain, frost, heat, and pollution. Available in grey, Dacfill provides long-lasting protection against the elements with superior flexibility and adhesion.

Key Features:

• Watertight & Elastic Coating – Prevents leaks and resists cracking
• UV & Weather Resistant – Protects against acid rain, frost, heat, and pollution
• High Build Membrane – Long-lasting durability and flexibility
• Versatile Surface Compatibility – For bitumen, cement, asphalt, plastics, and more
• Professional Use Only – Ideal for trade and industrial roofing projects

Application Details:

• Surface Types: Sloped roofs – bitumen, cementitious, asphalt, plastics
• Finish: High-build elastic membrane
• Available Colour: Grey
• Use: Exterior, professional application only

Surface Preparation

The substrate must be well clean and dry, free from flakes, gravel, dust and dirt. Fill up
joints with Elastofill.
following priming coats:

• On porous concrete, hard PVC and polyester : Primer 44 HS
• On very smooth concrete: Noxyde diluted with 25% water
• On iron and steel: undiluted Noxyde
  

Galvanised steel, copper, lead and aluminium can be recoated with Dacfill, if required, after
degreasing and slight sanding.

Technical Data

Density (g/cm³): 1,5
Gloss Level: Matt
Solids Content in weight: 73%
Solids content in volume: 60%
Test data: SRI value for Dacfill white after 4000 hours
weathering following ISO 16474-3:2020 : 97
(requirement: minimum 90)

Directions for Use

To ensure homogeneity, coating materials should be thoroughly stirred prior to use.

Drying weather: enough air ventilation (light breeze) or sunny conditions. Minimum
Temperature: 5°C. Max. Relative humidity: 80%.

Data Sheets

Rust-Oleum Mathys Dacfill Waterproofing TDS

Rust-Oleum Mathys Dacfill Waterproofing MSDS