100% 鋁窗的防漏水測試 Water-Tightness Test to Windows

所有鋁窗必須100% 全數進行鋁窗試水 

Water-Tightness Test to Windows

測試方法和程序   

Testing Method and Requirements:

Water-Tightness Test to Window

Time :	After window is glazed, conduct water-tightness test as early as practicable before the scaffolding is removed. (The test can still be feasible after scaffolding is demolished, but it will be more difficult to carry out remedial work if any.)
Method:	a) The water shall be applied using a “1/2” nozzle. The nozzle shall be used with a “3/4” garden hose and shall be provided with a control valve and a pressure gauge between the valve and the nozzle. The water flow to the nozzle shall be adjusted to produce water pressure between 30-35 psi (210-240 KPa).
	b) Working from the exterior, with the window in a closed position. To spray a continuous jet of water at the specified pressure directly onto the window joints, including joints between window frame & concrete surround, between glass & window frame and around openable window sash. The nozzle shall be moved slowly back and forth at 300 mm perpendicular from the joints and at a rate of 2 m per minute.
	c) To start the test from the lowest horizontal joint at the sills, then gradually moving upwards, and lastly the topmost horizontal joint at window head.
	d) During water test, the bottom glazing bead of the side hung/top hung window and fix light must be removed or not installed. Should there be any leakage found, all other 3 glazing beads shall be removed for locating the leaking point and further testing.
	e) Detail testing method and requirements shall be referred to the specification.
Inspection:	l) To observe the whole water-tightness test from the inside of the flat to check for water leakage / seepage, the test is passed if no water leakage occurs. g) If water leakage occurs, identify the location for making good, and then repeat for the test.