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Comar 5P.i. Reversible Pivot Window: Exceeds on water tightness, wind resistance and low air permeability

Comar Architectural Aluminium Systems are pleased to announce that their thermally efficient Comar 5 P.i. Reversible Pivot Window exceeds the requirements of the BS 6375 Part 1: 1989 Classification for Weather Tightness.

The test sequence, conducted by Wintech Engineering, was undertaken in order to determine the weather tightness of the Comar 5 P.i. Reversible Pivot Window in respect to air permeability, water penetration and wind resistance. The test methods were in accordance with BS 6375 Part 1: 1989, BS 5368 Part 1: 1976, BS 5368 Part 2: 1980 and BS 5368 Part 3: 1978.

For accurate test results a Comar 5P.i. window was mounted on to a rigid test chamber. The pressure within the chamber was controlled by means of a centrifugal fan and a system of ducting and valves.

The Air Permeability Test calculated air leakage through the Comar 5P.i. window at the maximum air pressure of 600 Pa. As a result, the air permeability equalled 4.54 (m3/hr/lin m), well under the permissible level of 6.65 (m3/hr/lin m).

In the test for the Comar 5 P.i. water tightness under static pressure, water was sprayed on to the window sample from a distance of 400mm. The pressure was increased from 50 Pa to 600 Pa in increments of 50 Pa, each stage being held for 5 minutes. As a result, no water leakage was observed. In the second part of the test, the water pressure was increased further to 700 Pa and 1000 Pa. Throughout the test the Comar 5P.i. remained watertight.

The Wind Resistance (Wind Design Load) test assessed the Comar 5 P.i. resistance to wind pressure. The window was subjected to five positive and five negative pressure pulses of 2400 Pa. As a result, the Comar 5 P.i. window showed no evidence of any permanent deformation or damage.

For the Wind Resistance (Safety) Test, which assessed the window’s resistance to high pressure pulse, the Comar 5 P.i. was subjected to a single positive (3300 Pa) and then one negative (3550 Pa) pressure pulse. Once again, the Comar 5P.i. remained impervious to the wind pressure.

The Comar 5P.i. reversible pivot window is part of the energy efficient Comar 5P.i. window suite. Thermal performance is achieved with a 20mm polyamide strip rolled-in between two separately extruded profiles. Copies of the test results, DVD and full Technical Manuals are available upon request.

Email: alisond@parksidegrp.co.uk