The 40-Year Roof

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THE 40-YEAR ROOF

It's not just possible – it's a reality. A properly installed and maintained protected membrane roof (PMR) with durable, reusable STYROFOAM™ Brand Extruded Polystyrene (XPS) Foam Insulation can last 40 years or more – that's at least twice the expected life of a typical conventional roof. More...
Why use STYROFOAM™ Brand XPS Foam Insulation for PMR?

In a protected membrane roof assembly, the insulation is placed on top of the membrane, improving the performance and longevity of the roof system. And STYROFOAM™ Brand XPS Foam Insulation is perfect for PMR because it offers:

  • Proven long-term performance  – membranes in PMR assemblies incorporating STYROFOAM™ Brand XPS Foam Insulation are still in exceptional condition 40 years after they were first installed!
  • Closed-cell structure  – moisture is inhibited from penetrating the insulation and reducing its thermal efficiency
  • Thermal efficiency  – reducing energy use and HVAC loads, lowering the building's carbon footprint
  • Superior temperature control  – helps maintain membrane at a constant temperature, reducing the harmful effects of freeze-thaw cycling and excessive heat, and extending membrane life
  • Durability and reusability  – high compressive strength stands up to heavy loads; the insulation can be reused in many cases, diverting material from landfills
  • Versatility – a variety of compressive strengths and board styles are available to meet different roof specifications

Design Made Easy

Now it's easier than ever to determine the "constructability" of your designs. We're pleased to announce that CADdetails.com, developer of the widely used construction industry CAD standard and layering system, has produced BIM models for the PMR Roofing system. Access the models here.

  • Lowest life cycle cost
  • Extended membrane life due to inverted assembly
  • Allows for year-round construction since the roof is waterproofed first and insulated second
  • Ease of ballast/insulation removal and re-installation because components are loose-laid

A PMR assembly with STYROFOAM™ Brand XPS Foam Insulation (minimum 40 psi) is also the ideal foundation for sustainable green roof designs. Download Green Roof PMR – A Design Primer (2MB PDF) to learn more.

Still trying to decide between a PMR and a conventional roof? You may find the decision is easier than you thought – especially after learning more about the sustainability benefits of PMR.

November 15, 2012 – Dow Earns Top Honor for Energy-Efficient Insulation Solution from Ontario Building Envelope Council

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- Free on-line continuing education courses
- Provides AIA and state credit
- Qualifies for HWS

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Read our latest PMR White paper

Read our latest PMR White paper (60KB PDF).

 

 

Third-Party Cost Analysis report, now available!

Visit the Third-Party Cost Analysis page for an overview of a recent study conducted by Smith Group and to request a presentation.

 

Listen to our podcast for THERMAX Wall System

Listen to our podcast, "Planning a vegetative roof? Focus on the fundamentals." now playing on facilities.net – the online edition of Building Operating Management magazine.