Onduline, the light weight roofing systems and water-proofing specialist, is delighted to announce the launch of its new and unique under roof system, ISOLINE® LOW LINE - the only system in the UK to be BRE tested and BBA Accredited to as low as 10 degrees.

ISOLINE LOW LINE underlay sheet
Ardit Strica, Technical Manager, Onduline

“Maximising ease of use for the installer was also a key priority for us with the design of this system, with the smaller corrugations of the sheet not only adding rigidity and strength, they also allow for easier fixing and greater compatibility with mechanical fixings for solar panels, which will be key over the coming years.”

Easy to carry, handle and fix, the non-slippery sheets are simple to cut with vertical overlaps embossed into the sheet. This makes installation even quicker and easier as it takes away the need to measure and it also removes confusion when it comes to knowing how much to overlap.

ISOLINE LOW LINE increased Airflow

ISOLINE® LOW LINE is a worldwide market leading under roofing system recognised for both its excellent quality and durability, as well as for its simplicity and fast installation.

Unique, high-quality manufacturing process...

The manufacturing process for Onduline corrugated bituminous sheets is patented and completely unique in the world. This allows us to differentiate ourselves by offering a first quality corrugated bituminous sheet, which is far superior in performance and resistance to other cheaper alternative bitumen roof sheet brands available in the market. Onduline is the market leader for bituminous roof sheets that offer high performance durability, impermeability and resistance to humidity and condensation. 


Get in touch today to discuss how we can assist you with your waterproofing needs. Call 0121 727 0533 or email us at [email protected]