Highly compression resistant wood fiberboard insulation for floors, walls, ceilings and roofs. Can be used in facades and fully sheathed roofs in rainscreen application when protected by ProClima WRB or roof underlayment.


  • Biologically safe (natureplus® certified- biologically save, carbon sequestering insulation that is vapor open
  • High thermal mass, allows product to protect interior from solar heat in summer. Highly sound absorbing
  • Raw material for all GUTEX insulation boards comes solely from wood that is harvested and grown using sustained forestry management practices
  • Boards are made using the dry process meaning that the boards contain 96% wood, and maximizes the use of this sustainable, recyclable natural resource
  • When used as insulation in exterior walls or roofs, THERMOSAFE WD needs protection by WRB (Pro Clima MENTO Membranes) or cover board by GUTEX cover boards (MULTIPLEX TOP, ULTRATHERM, THERMOWALL or MULTITHERM)


  • R-value/in: R- 3.6 per inch (U-value 0.039 W/mK)
  • THERMOSAFE-WD 40 Board R-value: 5.8
  • Custom orders in bulk possible for other thicknesses
  • Perm rating: 44/inch (Sd 0.24m for 40 mm board)
(800) 995-6329
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Green Fiber

Whether you need our dry blow-in insulation that’s perfect for most attics, one of our specialty formulas or even insulation for agricultural use, you can always count on our cellulose for the best results. Discuss this Product

Owens-Corning Pure Safety

Introducing Pure Safety® insulation by Owens Corning. In addition to being the world's first certified asthma & allergy friendly® insulation, Pure Safety® is a high performance insulation that has up to 65% less dust and is mold and mildew resistant. It’s Class A fire rated and reduces noise up to 50%. Pure Safety® insulation contributes to the health, safety and comfort of your home. And that’s important. Pure Safety® insulation is an unfaced, 3½ " thick x 15" wide x 93" long mineral fiber, high performance building insulation designed to contribute to a safe and healthy home. Discuss this Product


COMFORTBOARD™ 110 is a rigid, high-density, non-combustible, stone wool insulation board, and is designed for use as an exterior continuous insulation in commercial applications. COMFORTBOARD™ 110 is a thermally efficient, moisture-resistant, vapor permeable board and takes the place of other external sheathing insulations to create high-performance wall assemblies. These assemblies are effective against fire, moisture and thermal bridging, and allow for superior drying potential. Properties:
  • Vapor Permeable
  • Fire-resistant, non-combustible product with a melting point of approximately 2150°F (1177°C)
  • Environmentally Sustainable
  • Moisture-resistant
  • Stable long-term R-value
  • Dimensionally stable
  • UV-resistant
  • Sound absorbent
  • ROCKWOOL™ can contribute to earning LEED® points
(454) 084-1526
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Mitsubishi Hyper Heat

Please Note: The Zero Energy Project has not tested any of the products listed and lists them only as products builders may want to consider when evaluating various products to be used in their projects. The responsibility for evaluating them rests solely with the designer, builder or homeowner.