ISOLINE LOW LINE
ISOLINE LOW LINE
The Ultimate Solution for Low Pitch Roofs & Guaranteed Waterproofing for Complex Roofs
ISOLINE® LOW LINE is the only UK waterproofing system guaranteed for 30-years, at a 10 degrees pitch with BRE testing and BBA accreditation. Designed to be used with all roof tiles, new or existing; and specifically for use on low pitch roofs.
The ISOLINE® LOW LINE system isn't just another underlay; it's a revolutionary sub-roof solution designed to give you peace of mind. Rigorously tested by the BRE and holding BBA accreditation, this lightweight bituminous sheeting acts as your roof's primary waterproofing layer. With a unique corrugation height of just 24mm, it sits discreetly beneath your tiles or slates, creating an impenetrable barrier against leaks.
This means your roof tiles are no longer the only line of defence. The ISOLINE® LOW LINE system handles the heavy lifting, protecting your property from water damage that can occur over time as tiles shift or crack.
DESCRIPTION
Product Benefits
WHAT'S A SUB-ROOF?
A sub-roof is an additional protective layer within the roof structure. The ISOLINE® LOW LINE sub-roof is ideal for:
Heritage sites: the existing roof tiles can be re-used, as the ISOLINE® sub-roof becomes the main waterproofing element, helping to conserve the original aesthetics of a building.
Extra guarantee / protection: the ISOLINE® sub roof is forgiving, meaning any issues with the roof tiles are taken care of by the 'roof beneath the tiled roof'.
Low pitch roofs: the pitch of a roof can be limited to the roof tiles used, by integrating the ISOLINE® sub-roof, all roof tiles can go down to 10 degrees, allowing lower pitched roofing, in some cases this could mean an additional floor
WHY CHOOSE THE ISOLINE® LOW LINE SUB-ROOF?
The most reliable waterproofing solution for very low pitched roofs
The low profile configuration of ISOLINE LOW LINE, make it the perfect underlay or sub-roof 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.
ISOLINE LOW LINE sub-roof delivers long-lasting waterproofing to any building, offering complete peace of mind to professionals and homeowners. ISOLINE LOW LINE acts as a watertight 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 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.
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.
WHY USE ISOLINE® LOW LINE?
As light weight roofing systems and waterproofing specialists, Onduline's ISOLINE® sub-roof systems provide long-term protection against any potential water ingress that may happen over time through a breach in the primary roof covering, as well as being:
> Easy to install: easy to carry, handle and fix due to the light weight of the system, and vertical overlaps embossed in to the sheet for ease of cutting.
> Ideal for retrofit or new roofing projects: existing tiles can be re-used.
> Ventilated: allows increased ventilation to minimise condensation and maintain excellent moisture control within the cavity, preventing mould build up.
> Made from 47% recycled cellulose fibres, contains no asbestos and does not release any hazardous substances.
> Suitable for use with all major roof tiles.
> Suitable for roof pitches as low as 10 degrees, which could mean an additional floor.
> Tried and tested: BRE tested and BBA accredited.
> Guaranteed with a 30-year waterproofing guarantee.
ISOLINE LOW LINE PROJECT PACK
Designed specifically for specifiers, the ISOLINE LOW LINE Project Pack offers the various documentation and technical details to streamline your design and specification process. With this all-in-one pack, you gain access to comprehensive resources, detailed technical specifications, and cutting-edge product insights to integrate ISOLINE LOW LINE seamlessly into your projects.
ISOLINE LOW LINE PROJECT PACK
APPROVED INSTALLERS
To ensure your project meets the highest standards of durability and compliance, we’ve made it easy to connect with our network of Approved Installers. Every contractor on our approved list has successfully completed our Certified Training Course. View here
TECHNICAL CHARACTERISTICS
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Item Length (cm)
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200
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Item Length Tolerance
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[-0.4 ; +2] cm
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Item Width (cm)
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100.8
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Item Width Tolerance
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± 2cm
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Item Thickness (mm)
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2,4
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Item Thickness Tolerance
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±10 %
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Corrugation Height (mm)
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24
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Corrugation Height Tolerance (mm)
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2
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Corrugation Pitch (mm)
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48
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Corrugation Pitch Tolerance (mm)
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2
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Corrugation Number
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21
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Item Surface (SQM)
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2,016
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Mean Net Weight (kg)
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6,24
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Item net weight Tolerance
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± 0.30 kg
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Bending Under Downward Load (N/m²)
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> 500
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Reaction To Fire (Class)
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E
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External Fire Performance (Class)
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NPD*
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Harmonised Standard
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EN 14964:2006
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Declaration of Performance
Technical Data Sheet
30-Year Waterproofing Guarantee
APPLICATIONS
INSTALLATION & DOCUMENTATION
