Kingspan TR26 Thermaroof Flat Roof Board Insulation

Kingspan Thermaroof TR26 is a premium PIR insulation board designed for flat roof applications. With an impressive thermal conductivity of 0.022 W/mK, it’s one of the more efficient insulation options on the market. It’s compatible with most mechanically fixed single-ply waterproofing systems as well as green roof systems, making it a go-to choice for a wide variety of roof designs. This board is ideal for both new build and refurbishment projects, providing reliable performance across a range of building types. Its fast and straightforward installation process also makes it a great fit for fast-track building programmes.

Easy Installation and Versatile Compatibility

What sets TR26 apart is its ease of handling and cutting. It’s much more manageable on-site compared to many traditional insulation materials. Whether you're working with a mechanically fixed membrane or implementing a green roof system, TR26 can adapt to your project needs. It’s also available in a tapered version, which helps create the necessary falls in flat roofs to encourage water run-off—crucial for effective drainage. Additionally, TR26 can be specified with FM Approval to FM 4470 for projects requiring certified roofing systems.

Available Sizes

TR26 boards are available in a wide range of thicknesses to suit your U-value requirements: 25mm – 34.56m² per Pack 50mm – 17.28m² per Pack 60mm – 14.4m² per Pack 80mm – 11.52m² per Pack 90mm – 8.64m² per Pack 100mm – 8.64m² per Pack 110mm – 8.64m² per Pack 120mm – 5.76m² per Pack 130mm – 5.76m² per Pack 140mm – 5.76m² per Pack 150mm – 5.76m² per Pack

Key Features

High thermal efficiency: Lambda value of 0.022 W/mK Compatible with single-ply membranes and green roof systems Lightweight and easy to handle Tapered options available for drainage design Ideal for fast-track construction and commercial projects FM Approved version available for added peace of mind

Frequently Asked Questions

1. Can Kingspan TR26 be used on green roofs?

Yes, TR26 is fully compatible with most green roof systems. Its rigidity and durability make it suitable for supporting vegetation layers on flat roofs.

2. Is it suitable for refurbishment projects?

Absolutely. Kingspan TR26 is a great solution for both new builds and retrofits, thanks to its ease of installation and thermal performance.

3. What type of waterproofing system works best with TR26?

TR26 is designed to work with **mechanically fixed single-ply membranes**. It’s also compatible with a wide range of other waterproofing options commonly used in flat roof applications.

Check out our full range of insulation.

Browse more insulation board available online.

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

• Competitive prices on leading brands and quality products.
• Nationwide delivery across the UK
  
• A constantly expanding range of building and landscaping materials.
  
• Friendly, knowledgeable customer support.
  
• A trusted business backed by the JJ Roofing Supplies Group.
  

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.