British Standard Testing

British Standard Testing

Weather tests, low u-values and energy efficiency test report W11036-5

The Townhouse Sash Window has low U-values and great air tightness. The weather tightness classification tests were performed by Buildcheck, an independent test centre in the UK, and were performed in accordance with the following standards:

  • Air permeability tests in accordance with BS EN 1026:200o
  • Water tightness test in accordance with BS EN 1027:2000
  • Wind resistance tests in accordance with BS EN 12211:2000
  • Exposure category classification in accordance with BS 6375-1:2009 (clauses 6, 7 and 8)

British Standard Testing Classification

The Townhouse Sash Window has been rigorously and independently tested for weathering by Build Check Ltd, residing at Montrose House, Lancaster Road, Cressex Business Park, High Wycombe, Bucks, HP12 3PY, England who are the authorised British standards, agents, for window testing. Official signed certification available on request. This report records the test data and documents all of the calculations in accordance with the equations contained within the above standards.

U-Values

  • 28mm double glazed unit, argon gas
  • filled soft coat low-e and warm edged spacer,
  • centre pane U-Value 1.1 W/m2K.
  • Overall window U-Value, 1.3 W/m2K.
  • 28mm triple glazed unit, argon gas filled,
  • soft coat low-e and warm edged spacer,
  • centre pane U-Value 0.7 W/m2K.
  • Overall window U-Value 1.0 W/m2K.

British Standards Air Tightness Weathering

Under extreme pressure the window has been tested and has passed the maximum exposure to air permeability and water tightness, passing both with zero air and water leakage, classification BS 6375-1:2009.

Air permeability pressure tested to max 600 Pa achieving class 4, classification BS EN 1026:2000 Water tightness pressure tested to max 900 Pa achieving class 4, classification BS EN 1027:2000.

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