NEMA
My wife wanted environmentally friendly living, I wanted low-energy housing and I we both wanted it as soon as possible. Nema met all our requirements and gave us a discount for building in winter.
Living in modern wooden
houses of superior quality at joyful prices. Moving to your own house in the spring.

Low-energy Houses

Low-energy wooden house means a building, in which the annual energy consumption ranges from 15 to 50 kWh/(m²a). To achieve these savings, we use highly effective insulation of walls, roofs and floors of a thickness of 220-300 mm, high-quality filling of the holes and we generally ensure a proper airtight building envelope. In these wooden houses you do not have to invest in the system of forced ventilation-the so-called heat recovery, although its installation is always beneficial. In the low-energy standard we implement wooden constructions with a diffusion-open and diffusion-tight wall structure.

What is a diffusion-open and diffusion-tight wooden house?

The essential task of constructing each wooden building is functionality.  Whether it is a diffusion-open and diffusion-tight system, the correct and precise design is a must.  Diffusion-open wall structure is such a structure where the water vapor permeability of the structures is controlled through the internal vapor barrier layer used.  Such a structure more naturally regulates the indoor humidity that arises from normal household operation.  An internal vapor barrier is used in the diffusion-open structure and as a result, moisture can not enter the structure.  Generally a diffusion-open structure is easier to implement and allows the elimination of errors in execution.  In any case, it is always necessary to evaluate each structure.

In certain cases it may be preferable to use the diffusion-tight wall structure.  For example if the house is near the border of the neighboring land.

We recommend a personal meeting to each customer first to thoroughly clarify the issues of the individual structure types and possibly choose the optimal solution.

Diffusion-open wall system:

Diffusion-tight wall system:

• Final sheating-plasterboards, thickness 12.5 mm
• Installation Shaft Wall - thickness 60mm
• OSB Boards - thickness 15 mm
• KVH supporting structure 60/160
• KNAUF insulation within the wall support system - thickness 160 mm
• Wood fiber insulation board th. 60 mm
• Diffusion-open plaster system - th.
10 mm

Total thickness of the wall = 317.5 mm
Thermal resistance of the structure: R = 5.44 m2K/W
Heat transfer coefficient of the structure: 
U = 0.18 W/m2K

Difúzně otevřený systém stěn

• Final sheating-plasterboards, thickness 12.5 mm
• Installation Shaft Wall - thickness 60mm
• Vapour barrier
• KVH supporting structure 60/120
• KNAUF insulation within the wall support system - thickness 120 mm
• Fibre reinforced gypsum board - th. 12.5 mm
• Facade polystyrene - th. 120 mm
• Plaster system - th. 10 mm

Total thickness of the wall = 335 mm
Thermal resistance of the structure: R = 6.45 m2K/W
Heat transfer coefficient of the structure: 
U = 0.16 W/m2K

Difúzně uzavřený systém stěn

 

   Wooden houses by NEMA from beganing to handover

Low-energy wooden house: diffuse open and diffuse closed

Passive houses

   Wooden houses from large massive wood panels

3D projects


Do you have any questions? You can ask to:
David Javorský:
+420 722 616 602, javorsky(tecka)david(na)nema-drevostavby.cz

 

 


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