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World Record in Thermal Insulation Values

8/17/2017

1 Comment

 
Energy Efficient Wooden Home
Energy Efficient Wooden Home

​Wood naturally insulates, stores and buffers by nature - every wooden house has the potential to become an oasis if the wood is installed unadulterated. Thanks to its patented design, Holz100 doubles the efficiency of full or glued wood, thus keeping the world record in thermal insulation. This makes energy-efficient housing, passive houses without insulation, and complicated building technologies possible.

Yup, you'd better believe it - there are even Holz100 buildings that are built without insulation! We know what architects will ask right away when we tell them our material has an R value of 2.4 per inch: "How is it possible for 100% pure, natural wood to achieve that insulation value on its own?" and here is our answer:

The Thoma Holz100 Thermal walls consist of layers of cross-laminated wooden boards with a thickness of 20mm to 80mm connected by wooden dowels. What’s different are the grooves milled into individual layers of wood. The grooves milled into the layers of wood (integrated structural insulation) function within the Holz100 wall to laminate as microscopic air cushions without circulation, and reduce the wall’s thermal conductivity which results in a substantially improved thermal insulation. At their full static load capacity, the Holz100 Thermal walls show parameters otherwise reserved solely to insulation materials (lambda value =0.079 W/m²K).

It also makes it possible for external walls to have a very high energy standard with only a little additional thickness for insulation. Our research work combines excellent technical parameters with a background of building-specific physical properties, which at least minimizes the building cost.


Here are some tests we took:

​
1. To achieve a thermal rating of U = 0.3 W/m2K, which is the current European norm aspired to build without insulation, would have to use the following wall thicknesses:

Reinforced concrete: 726 cm

Average brick: 60 cm

Conventional timber & glue-laminated wood products: 47 cm

Holz100: 27cm



​2. This diagram shows how much material is needed to achieve the U-value of 0.22 W/m²K:
Holz100 vs Conventional Building Materials
Holz100 vs Conventional Building Materials

Conclusion: an average Holz100 home only needs 1/3 of the heating system compared to a traditionally insulated home with the same R value and requires only 3/5 of wall thickness (laminated commercial timber) to achieve the same thermal rating.

Holz100 is the only known construction methodology that can be built in multiple stories without additional insulation. Passive house standards are achieved by using 35cm of Holz100 (U-value approx. 0.22). This energy saving phenomenon is possible by routing small air-pockets between the timber layers in the solid wood elements.

Wood also acclimatizes a building more efficiently. Not only in winter when it acts as a heat conductor but during summer too. It is thermally slow and more effective than any other building material. This led us to build more and more roofs with solid wood panels in warmer areas which achieved much better ratings than with roof trusses, because they acted like wood frame walls.

This is only 1 out of 12 great benefits of Holz100! See what other benefits make Holz100 an unparalleled multi-purpose building solution for healthier, greener, and safer living spaces.
Healthy, Green & Safe Living
Healthy, Green & Safe Living
1 Comment
Witold
7/15/2019 03:53:08 am

It is true that normal reinforced concrete will need to be almost 10 meters to achieve stated insulation. The thermal mass will also make it very stable,. but also phase shifted. However.

However, even generic reinforced concrete are not as bad as stated. Usual lambda is around 1.1W/(m*K), for concrete with 12mm rebar. A bit less with smaller rebar.

Very heavy concrete and moist (external) can have 1.8 - 2.0. But in insulating applications, a lighter concrete will be used instead.

There are insulating concrets that are way better too.

Misapor AG insulating concrete that uses foam glass as agreggate do have lambda = 0.27W/(m*K). YES. To achieve U = 0.3 W/m²K , one needs 90cm of it. And for U=0.22W/m²K , one needs 120cm. Way better.

Most of the building I have seen with this material do have wall thickness of about 60cm. (Sometimes 50cm, sometimes 80cm). And achieve very good parameters. The steady state U value is usually higher, but the 12 hours phase shift in heat transfer helps a lot, and overall system is efficient as systems with better U values, but lower thermal mass.

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  • Home
  • About
    • Our Company
    • What is Holz100
    • Benefits >
      • Moonwood
      • Ideal Indoor Climate
      • Healthy Living
      • Breathability & Airtightness
      • Thermal Insulation
      • Fire Protection
      • Safety
      • Radiation Shielding
      • Soundproofing
      • Holz100 is #1
      • 100% Wood
      • Circular Economy
      • Manufacturing
    • The Process
    • History
  • Product
    • Products
    • Thoma Holz100® Building System
    • Flooring
    • Finishing Materials
    • Types of Wood
  • MODULAR
    • Laneway House >
      • Model 1A
      • Model 2A
    • Zinipi >
      • Zinipi Basic
      • Zinipi Lodge
      • Zinipi Lodge L
      • Zinipi Loft
      • Zinipi Loft D
    • Mobile Home
  • Projects
    • Feature Projects
    • References
    • Residential
    • Hotels
    • Cottages
    • Institutions
    • Offices
    • Other
  • Resources
    • Downloads
    • Events >
      • WSF 2016
      • IIDEXCanada 2016
      • National Home Show 2017
      • Wood Symposium 2017
      • WSF 2017
      • IIDEXCanada 2017
      • Spring Cottage Life Show 2018
      • Spring Cottage Life Show 2019
    • Articles
    • Certificates & Awards
    • Links
  • SERVICES
    • Design
    • Design-Build
    • Floor Plans
  • Contact