Radiant Roof Testing Laboratory
Radiant roof test equipment is used to determine the performance of roof products and systems to external fire exposure.
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BRoof(t4) Testing
DD CEN/TS 1187 (T4) is a method used to assess the external fire performance of roof systems under severe fire exposure, including burning brands to simulate flaming droplets, wind-driven flame spread and a radiant heat source to replicate the conditions of a nearby fire. Results can be used to support BRoof(T4) classification under EN 13501-5, helping manufacturers strengthen product credibility, and secure specification in compliant roof systems across the entire UK market.

The test is performed in two stages:
Stage 1
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A small burning brand is applied to the centre of the first sample for 1 minute to assess initial ignition behaviour under controlled conditions on a sloped surface. This stage evaluates how the system responds to direct localised ignition at the early stages of fire exposure.

Stage 2
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3 more consecutive tests are done on samples exposed to supplementary radiant heat and airflow conditions, with burning brands re-applied after 5 minutes and moved across the surface to assess fire spread and penetration. The system is monitored for up to 1 hour, simulating more severe, real-world external fire exposure conditions.

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Extended Application Service – Phased Approach:
To help reduce the amount of testing required when covering a wider range of end-use applications, Attain RTC has developed a strategic non-UKAS-accredited “Phased Testing” approach based on the extended application principles of PD CEN/TS 16459. This method allows a BRoof(T4) classification to be achieved with greater efficiency where possible variations are present, while still supporting a broad range of system configurations.

The result is a more cost-effective testing programme that reduces unnecessary duplication, expands the validity of test outcomes, and gives clients confidence that their systems have been robustly and comprehensively assessed.

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Trusted by leading UK manufacturers

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Attain RTC has been instrumental in navigating the complex Broof(t4) fire testing requirements for our varied roof build-ups at EverRoof. From Adam’s initial technical guidance to Phil’s expert onsite feedback and Sreya’s seamless project management, the team consistently goes above and beyond. Their deep understanding of regulations and commitment to service makes them an invaluable partner for our ongoing testing needs.

Dave Wilson

EverRoof

I visited Attain RTC in October 2025 to observe BRoof (t4) fire testing carried out on two different roof build-ups. During our time at the centre, we were given a comprehensive tour of the facilities and had the opportunity to meet with members of the team, who were professional, knowledgeable and welcoming throughout. Attain also provided assistance with budget quotations for future testing programmes and were always on hand to offer guidance and support when required. The service provided was efficient and helpful at every stage of the process.I would not hesitate to recommend Attain RTC.

Olivia Breasley

Longworth Group

The testing process was exceptionally thorough, well‑organised, and delivered with a high level of professionalism. Communication was clear throughout, and the insights provided were both detailed and genuinely valuable to our project. We were extremely impressed with the overall service and would highly recommend it to others.

Colm O’Boyle

T&B Contractors

We have been working with Attain RTC from the very beginning and found them to be highly professional offering a high-quality and reliable testing service. They have bought a new and very much welcomed positive approach to the testing process, and quickly established themselves as a market leader in both the quality of service and thoroughness of testing!

Matthew Sexton

BMI Group

Moy have been working with Attain RTC for over a year and continue to return to them for our fire testing requirements. Dealing with Adam and the team is always straightforward, with clear instructions, realistic timeframes, and excellent communication throughout. Their consistent professionalism and reliability make Attain RTC a trusted partner for us.

Will Russell

Moy Group

Having recently commenced working with Attain we find their expertise and willingness to support in a challenging market refreshing.

Steve McIntryre

Viritopia

Vanquish Systems has worked with Attain RTC on multiple projects and continues to do so, finding their approach to testing and classification to be professional, technically robust, and supportive with good customer service throughout. Communication has been clear and focused on regulatory and technical requirements.

Oliver Bate

Vanquish Systems

Working with Attain RTC has been a real pleasure. From the first initial interaction, they’ve demonstrated professionalism, genuine care, and a deep understanding of our needs. They delivered a high-quality service in a very timely fashion, furthermore their attention to detail is excellent. I regard them as a reliable, innovative, and trustworthy solution provider.

Dean Grady

Sika

Oner and the team at AttainRTC are incredibly professional and knowledgeable. They were very good at explaining and assisting us with understanding the testing process and permitting us to observe first hand. We have and will use their services again without hesitation.

Sue Hopkins

Dynamik

I visited Attain RTC in February 2025 to observe a number of BRoof (t4) fire tests. All the members of staff I came into contact with were both friendly and hospitable and I felt comfortable and confident during the course of my observations. Also, there was a requirement for further information after the classification report was issued and Attain RTC provided the necessary details at no extra charge. I would not hesitate to recommend this company.

Dave Wilkinson

Tor Coatings

Opening Hours

08:30 - 17:00 Monday – Thursday
08:30 - 15:30 Friday

General enquiries

enquiries@attainrtc.co.uk

Where to find us

Hangar One, Leeds East Airport, Church Fenton, Tadcaster, North Yorkshire, LS24 9SE

Give us a call

01937 227 640