Insulation Boards offer one-step installation.

Press Release Summary:

Combining flute fill with 4 x 8 ft flat panels, EPS Flute Fill Combo Boards are available with factory-laminated, fire-rated coated-glass fiber mat or polyester facer over expanded polystyrene insulation. Boards are designed for metal building retrofit applications that employ mechanically attached or Duro-Bond® induction welding systems. Providing code approvals, stable R-values, and moisture resistance, boards are 100% recyclable and have no formaldehyde or ozone-depleting CFCs or HCFCs.

Original Press Release:

Duro-Last®, Inc. Adds Flute Fill Combo Board to their Duro-Guard® Insulation Product Line

SAGINAW, MICHIGAN – Duro-Last, Inc. announces an addition to its Duro-Guard insulation product line with EPS Flute Fill Combo Board for another Time off the Roof™ solution.

Duro-Guard EPS Flute Fill Combo Boards combine flute fill with the 4’x8’ flat panels. The custom formed EPS board is available with a factory laminated fire rated coated-glass fiber mat or a polyester facer over the EPS insulation. The one-step insulation installation will speed up installations and reduce labor on metal building retro-fit applications. Duro-Guard EPS Flute Fill Combo Board may be used directly under Duro-Last, Duro-Tuff® or Duro-Fleece® membranes without the use of a separator sheet.

Duro-Guard EPS Flute Fill Combo Boards are specifically designed for metal building retro-fit applications that employ mechanically attached or Duro-Bond® induction welding systems. The advantages of using the EPS Flute Fill Combo Board is the reduced labor from single-piece construction combined with a laminated facer which eliminates the need of a separator sheet. Other benefits include: code approvals, stable R-values, moisture resistance, and environmentally friendliness. The EPS Flute Fill Combo Board has no formaldehyde or ozone-depleting CFC’s or HCFC’s. It also contains 25% recycled material and is 100% recyclable. 

Duro-Last is known for prefabricated roofs, custom curbs and stacks, renowned quality assurance and technical field services, as well as industry-leading warranties. The addition of the EPS Flute Fill Combo Board provides Duro-Last customers with another Time off the Roof solution, one of several new options to save you time and money.

About Duro-Last®, Inc.

Known as the “World’s Best Roof®”, Duro-Last®, Inc. is the world's largest manufacturer of custom prefabricated, thermoplastic single-ply roofing systems.  Factory controlled custom prefabrication eliminates up to 85% of field seams, resulting in lower on-site labor costs and easier installation. This highly sustainable and extremely durable roofing system is leak-proof, virtually maintenance-free and resistant to chemicals, fire, punctures, and high winds. Over two billion square feet of Duro-Last membrane has been installed throughout North America. Duro-Last is headquartered in Saginaw, Michigan with additional manufacturing facilities in Grants Pass, Oregon; Jackson, Mississippi; Sigourney, Iowa, and Carrollton, Texas. For more information on Duro-Last, call 800-248-0280 or visit

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