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Walter Schweikart
hightech Holzteile e.K.
Gottlieb-Daimler-Straße 2
D-72172 Sulz a. N.

Inhaber: Walter Schweikart
Amtsgericht: Stuttgart HRA 480 874
Umsatzsteuer Identifikationsnr.: DE 185218034

Tel.: +49 (0) 74 54 / 96 34-0
Fax.: +49 (0) 74 54 / 96 34-15
Email: walter@schweikart-hth.de

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The Energy Conservation Regulations (EnEV)

Practical Application

Schweikart Venstersysteme fulfills all the relevant points of the new and current European-wide regulations in the field of EnEV the energy conservation regulations
Testing “Schweikart Venstersystem” (wood/alu window system)
  • Efficiency
  • Heat retention properties (U-value)
  • Air permeability
  • Water tightness
  • Resistance to wind load
  • Resistance to static distortion
  • Resistance to vertical loading
  • Impact resistance
  • Coefficient of thermal transmittance Uw / Uf
Test results
Air permeability
Testing standard
DIN EN 1026
Classification according to
DIN EN 12207
Class 3 (test pressure 600 Pa = highest pressure)
Water tightness
Testing standard
DIN EN 1027
Classification according to
DIN EN 12208
Class 9 A (No ingress of water)
Resistance to wind load
Testing standard
DIN EN 12211
Classification according to
DIN EN 12210
Class C 3 Distortion:
test pressure 1600 Pa 3
Pressure-suction: test pressure 800 Pa, 50 cycles
Security test: test pressure 2400 Pa
Resistance to static distortion
Testing standard
prEN 948-1
Classification according to
DIN EN 13115
Class 4 (Loading 350 N)
Resistance to vertical loading
Testing standard
prEN 947-1
Classification according to
DIN EN 13115
Class 4 (Loading 800 N)
Impact resistance
Testing standard
prEN 13049
Classification according to
prEN 13049
Class 4 (from a height of 450 mm)
Coefficient of thermal transmission Uw (window) / Uf (frame)
Calculated according to prEN ISO 10077-2 numerical table
Coefficient of thermal transmission Uf (frame) Uf = 1,5 W / (m2K)
Coefficient of thermal transmission Uw (window) Uw = 1,3 W / (m2K)
Coefficient of thermal transmission Uw (window with triple glazing, Ug 0,7 W m2K)
Calculated according to prEN ISO 10077-1 numerical table
Original Schweikart Venstersystem V-Isolux with high insulation layer Uf = 0,8 W / (m2K)
All tests were executed by eph ENTWICKLUNGS- UND PRÜFLABOR HOLZTECHNOLOGIE GmbH D-01217 Dresden in July 2009