Designed specifically for use on low pitch roofs, this lightweight bituminous underlay sheeting has been rigorously tested and is at least three times less likely to leak compared to a traditional tile system.
The installation guide explains what ISOLINE® LOW LINE is, the installations that it is suitable for, the benefits of the system and how it works. It then goes on to describe step-by-step fitting of the system with handy imagery and illustrations.
Ardit Strica, Technical Manager for Onduline Building Products, said: “We have received fantastic feedback from within the construction industry since the launch of ISOLINE® LOW LINE. As it’s the only bituminous corrugated under roofing system in the UK that can be used on a pitch as low as 10o, it is having a really positive impact on new and renovation projects alike.
“The launch of the brochure and installation guide on the Onduline website means that professionals have the opportunity to take a look at how ISOLINE® LOW LINE works, the benefits of the system, what projects it is suitable for and see step by step just how easy it is to install.”
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.
Not only does this help to meet the demand for maximising living space, as the low pitch means the roof void can be minimised, it also enables traditional tiles to be used in situations where they wouldn’t have been able to be utilised previously, such as extensions or large roofing projects, greatly enhancing the aesthetic quality of a property.
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.
Sustainable ventilation solution
Due to the corrugations, ISOLINE® LOW LINE allows increased ventilation and airflow both above and below the sheet and tile battens positioned above the corrugations allow moisture to drain to the eaves which, with the enhanced ventilation, maintains excellent moisture control within the cavity.
The material is also in line with the growing awareness of ‘green’ issues and the need to offer sustainable solutions as ISOLINE® LOW LINE sheets are made of a minimum 50% recycled cellulose fibres, contain no asbestos and do not release any hazardous substances.