Description
Novia Reflex is a high-quality metallised synthetic laminate designed for exceptional performance in roof underlay applications and as a wall cladding for timber frame constructions. It is suitable for both cold and warm pitched roofs as well as insulated wall installations, offering a combination of versatility, durability, and affordability.
Fully compliant with EN 13859-1 for roofs and EN 13859-2 for walls, this reflective breather membrane enhances R and U values when installed correctly. It provides excellent water resistance while maintaining high breathability, helping to regulate moisture and improve energy efficiency. Engineered for strength, it offers outstanding tensile and nail tear resistance and meets the EN 13501-1 fire classification grade E.
Features and Benefits
- Excellent tensile and nail tear strength for durability
- High water resistance while maintaining breathability
- Enhances R and U values for improved thermal efficiency
- Versatile, high-quality, and cost-effective solution
- Low-emissivity metallised synthetic laminate for added insulation benefits
- Suitable for roof underlay and wall cladding in timber frame constructions
- Can withstand up to three months of UV exposure
- Roll dimensions: 50m length x 1.5m width (75m² roll size)
- Roll weight: 10kg with a material weight of 131gsm
Installation
Walls
To install Novia Reflex on walls, fix it to the structure with the reflective side facing outward into the cavity. Start at the bottom, ensuring that upper layers overlap lower layers with a minimum overlap of 100mm for horizontal joints. Vertical laps should be at least 150mm and should not begin within 300mm of a corner. Protect the bottom timber with an additional overlap. Secure the membrane using galvanised nails, stainless staples, or other approved fixings.
Roofs
Novia Reflex is suitable for both cold and warm roof applications, as well as BS 5534 wind uplift scenarios. For warm roofs, it can be placed directly on insulation or a boarded roof if required. In conventional cold roofs, install it by overlapping upper layers over lower layers, following the BS 5534: 2014 minimum overlap guidelines. Ensure a 200mm overlap at the ridge and seal all vertical overlaps over a rafter. Entry points for services such as soil pipes and vents should be carefully sealed by cutting the underlay accurately, turning up the edges, and ideally sealing with Novia tape.
Wind Uplift Zones
For compliance with certain BS 5534 wind uplift zones, use the single-sided Novia Breather Membrane Lap Tape. In zones where tape use is mandatory, a 100mm overlap is acceptable. Batten-restrained results were tested with a 150mm overlap without tape.
Low-Emissivity Cavities
For improved U-value performance, the membrane can be installed with the reflective side facing backward into a low-emissivity cavity. A 25mm counter-batten can be used to create this cavity, preventing contamination on the reflective surface. In this setup, an additional breathable membrane such as Novia Black should be installed on top of Novia Reflex, facing outward as usual.
Tapes and Sealing
To achieve optimal airtightness, Novia installation tapes should be used. While not always mandatory, the single-sided Novia Breather Membrane Lap Tape is recommended. For projects requiring a greater focus on airtightness, Novia Double-Sided Adhesive Tape provides additional sealing benefits. Using both tapes ensures a high-quality, durable, airtight, and breathable installation.
Standards and Certification
- CE approved
- Flame resistance: Class E to EN 13501-1
Novia Reflex provides a robust and energy-efficient solution for roofing and wall applications, offering long-term performance and compliance with modern building regulations.
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Some of Our Service Reviews
This company deserves more than 5 stars
This company deserves more than 5 stars! Brilliant help & communication by the staff there. My purchase was delivered the next day. can't fault them at all. Thank you
Date of experience: 21 February 2024
Made up with the cladding and…
Made up with the cladding and corrugated roof sheets
Delivered early which was a bonus
All the sheets were not damaged
And l must say cheapest around
Spot on
Will defo use again
Date of experience: 17 October 2023
Cladding
Very pleased with my grey composite cladding. Staff helpful, free samples received, confirming a good product at a fair price, leading to my purchase.
Date of experience: 11 June 2023
Help with my new garage roof!
Trade Warehouse could not have been more helpful. They very patiently guided a roofing newbie through all of the stuff I would need to do the job and provided helpful tips along the way. It's rare to find a company offering such a fantastic level of customer service as standard. I would highly recommend them and will certainly use them again.
Date of experience: 23 August 2023
Garden Storage
My contractor (Charlie Keep) recommended you to me so I could order the materials online for delivery direct to my home. These were for a project to construct a Garden Storage Area. The materials were perfect and the whole process was simple and slick with materials delivered on time and very well packaged. Charlie has since completed the project & I am very happy with the outcome.
Date of experience: 20 August 2023
Right product, right price, right delivery.
Right product, right price, right delivery. Sure, it was only one length of cast iron guttering but they took the order seriously, packed it well and kept me updated on delivery. And when I opened the very good packaging I found it was exactly what I had wanted. How can you do better!!
Date of experience: 31 January 2023
Fast
Fast , efficient service
Date of experience: 12 September 2023
It was exactly what I wanted
It was exactly what I wanted. Arrived in good order
Perfect
Date of experience: 16 September 2023
Straight forward and helpful with…
Straight forward and helpful with making the order. Delivery guy was friendly and was helpful in bringing the sheets into the back yard (was only a few). Really happy and would highly recommend!!!
Date of experience: 27 August 2023
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