An underroofing system to be used under traditional tiles. Smart waterproofing, long term serenity!

ISOLINE systems are designed to be used under clay tiles or round tiles for new buildings and renovations. ISOLINE range provides a roof under the roof for a highly durable waterproofing (30 years warranty), money saving, reduced rain noise and increased tile durability. As all Onduline products, ISOLINE is also eco-friendly!

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Isoline underroofing sheet

ISOLINE® Underroofing Sheet

Very long-lasting barier against leaks for tiled roofs. Smart waterproofing, long term serenity.

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.