Welcome to The Build Up, the Polyfoam XPS email newsletter. This month we’re focusing on flat roof design and specification, including how to achieve inverted flat roofs that perform as intended. As well as the usual round-up of news stories that have caught our eye, this month’s resources include a new white paper we’ve put together.

Demystifying Standards

Architects and specifiers are often told that they need to know all about standards and codes of practice. But many standards are big documents with a hefty price tag, meaning they are not always accessible or digestible.

Our new blog post series is demystifying some of those standards. We’re explaining how we apply them as part of providing you with extruded polystyrene (XPS) insulation products, and technical services such as U-value calculations. This month it is the code of practice for flat roofs, BS 6229.

guidelines folders

What do architects need to know about BS 6229:2018?

Design Resources

    • Inspiration to achieve better buildings doesn’t come much better than Passive House + magazine. Every issue features multiple in-depth case studies telling the stories of low energy new-build and retrofit projects. Each is illustrated with site photos and supported by in-depth technical detail of how the end result was achieved. Comprehensive news articles, enlightening expert columnists, and technical examinations of current building performance issues complete each highly readable edition.


  • Although focused on helping to put London “on the path to a zero carbon future”, the London Energy Transformation Initiative (LETI) is creating resources that any construction professional can apply to their work, wherever they are based. Their Climate Emergency Design Guide is helping architects to approach a topic for which no formal standard currently exists, while documents like this Net Zero 1-Pager give a useful summary for anyone looking to engage with this complex topic.

Getting More From Polyfoam XPS

We’re excited to launch our new white paper, which is a detailed look at how the performance of inverted roofs is assessed and certified. If buildings are going to perform as they were designed to then it’s essential that designers and specifiers have confidence in the products and systems they select. This white paper explains everything you might look for in an inverted roof system.


What Caught Our Eye This Month ?


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