Specification Sales Headshot - Justin Lewis

Flat roofs are doing more than ever before. They’re expected to support plant and solar PV,  manage rainwater, provide usable external spaces, and meet ever-increasing performance requirements.

As the role of the roof has evolved, so has the challenge of specifying it. The question is no longer whether a roof can meet one requirement, but how the whole system performs together.

This webinar explores what multifunctional roofs demand from specification – and why it's time to think beyond individual performance requirements.

Why attend

If you specify, design, or install flat roof systems, this webinar will help you navigate the challenges shaping modern flat roof specification.

You’ll explore what “extensive loading” really means, challenge common misconceptions around stone wool, and discover why the whole roof system matters.

What you'll learn

  • How modern roof demands (plant, solar PV, access, and social use) are challenging traditional flat roof design.
  • Why loading, fire, thermal, acoustics, moisture, and durability should be considered together, not individually.
  • When typical loading becomes extensive loading.
  • An early look at ROCKWOOL's upcoming flat roof solution. 

Join the conversation live

  • CPD points included
  • Receive a certificate of attendance
  • Ask our expert your questions directly during the session

Save your seat!

 

Meet the host: Justin Lewis (Head of Roofing)

As Head of Roofing, Justin has over 15 years' experience helping architects, specifiers, and contractors deliver compliant, high-performing flat roof systems.  

Webinar details

1pm, 25th August 2026

Duration: 1 hour

Online only (Zoom)

Stone wool: A different perspective

One of the most common misconceptions in flat roof specification is that stone wool isn't suitable for today's roof demands. The reality is very different.

Modern high-density stone wool boards deliver compressive strengths of up to 70 kPa, while also providing the fire, thermal, acoustic, moisture, and long-term durability performance that modern, multi-use roofs demand.

 

 

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