General Overview

BRE tested and BBA Accredited to as low as 10 degrees
ISOLINE LOW LINE sheet dimensions
ISOLINE LOW LINE increased ventilation and airflow
ISOLINE LOW LINE worldwide leading waterproofing
ISOLINE LOW LINE worldwide leading waterproofing
ISOLINE LOW LINE worldwide leading waterproofing
ISOLINE LOW LINE worldwide leading waterproofing
ISOLINE LOW LINE worldwide leading waterproofing
Colours

Description

Product Benefits

Suitable for any type of roof tile
Eco friendly: made from 50% recycled content
BRE tested with BBA Accreditation
Low pitches maximise living space
Pitch can be as low as 10 degrees
Adapts easily to each roof structure: adaptable to roof shape, ideal for renovation
Ideal for house extensions, greatly enhancing the aesthetic quality of a property
Increased ventilation and airflow due to the corrugations
Quick weatherproofing
Watertight
30-year warranty
BBA Accredited

ISOLINE LOW LINE: Market leading underlay for low pitched roofs

The most reliable waterproofing solution for very low pitched roofs
The low profile configuration of ISOLINE LOW LINE, makes it the perfect underlay solution for a reduced roof section making it ideal for projects on which the height restriction or the aesthetic appearance of the roof line is of prime importance.

Engineered to be 100% leak free, ISOLINE LOW LINE roofing underlays deliver long-lasting waterproofing to any building, offering complete peace of mind to professionals and homeowners. ISOLINE LOW LINE acts as a roof under the roof. 

ISOLINE LOW LINE roofing underlay sheets work with any type of roof tile
ISOLINE LOW LINE compliments and enhances the performance and reliability of traditional tile or slate roofs. The ISOLINE LOW LINE underlay system can be used in both new constructions and renovation to keep the aesthetics of the original heritage of a building, whilst acting as the primary waterproofing material and protection for the building.

With a corrugation height of just 24mm, ISOLINE® LOW LINE is fixed below the primary tile or slate roof covering, acting as the primary waterproofing layer of a roof. Thus, making roof tiles a secondary line of defence enabling the pitch of the roof to be much lower than the minimum as recommended by the tile manufacturer.

 

Support battens and full deck installation

ISOLINE LOW LINE BBA underlay system

 

Ridge detail 

ISOLINE LOW LINE BBA underlay system

 

Innovation of ISOLINE LOW LINE 

The innovation of ISOLINE LOW LINE has provided opportunities to allow roofing tiles and slates to be laid below the manufacturers minimum recommended roof pitch with confidence. With this type of underlay technology, roofs can be designed with lower pitches, allowing you to use any type of tile or to deliver more usable floor area. 

Applications

INSTALLATION INSTRUCTIONS

ISOLINE roofing underlay sheets are provided with a 30-year waterproofing warranty going along with the respect of our installation guidelines and the use of ONDULINE accessories.

For additional ventilation, use ONDUTISS AIR permeable membrane.

Documentation

ISOLINE LOW LINE DISTRIBUTORS

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