The ISOLINE® Underroofing Sheet is engineered to deliver long-lasting, high-performance protection for clay-tile and traditional roofing systems in the Philippines. Designed as a durable and weather-resistant underroof layer, ISOLINE® helps safeguard homes from leaks, moisture, and heat—making it an ideal solution for the country’s demanding climate.

Lightweight yet robust, ISOLINE® creates a “smart roof under the roof” by acting as a dependable barrier that enhances insulation, boosts thermal and acoustic comfort, and extends the overall lifespan of your roof. It helps maintain the natural beauty of clay tiles while providing added security and peace of mind for homeowners.

Choose ISOLINE® for:

  • Reliable leak protection

  • Improved thermal and acoustic comfort

  • Fast and easy installation

  • Long-term durability in tropical weather

Whether you're upgrading an existing roof or building a new one, ISOLINE® Underroofing Sheets offer practical, cost-efficient, and high-quality protection for roofing professionals and Filipino homeowners.

ISOLINE Underroofing System

ISOLINE Underroofing System

Reliable Underlayer Protection for Clay Tile Roofs

Projects and testimonials

Thousands of users have already chosen Onduline solutions for their projects. Discover sample projects or find out what our customers have to say.