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Secondary Glazing Technical
Information and Testing
| Test
for Watertightness |
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Test
in accordance with BS6375. Part 1: Water temperature
17ºc classified for watertightness.
Test pressure
class (Pa): 300
| Occurrence
of Leakage |
Position
of Leakage |
| Pressure
(Pa) |
Time
(min) |
|
| 400 |
41 |
Leakage
through fixed joint at X |
| 500 |
47 |
Upwards
spray at Y |
| 600 |
50 |
Leakage
through beading applied to cill at Z |
| Limit
of Watertightness (Pa) |
300Pa |
|
| Air
Permeability
Test in
accordance with BS5368 Part 1: Air temperature 19.5ºc,
total window area 2.01m², this window is classified
for air permeability as follows:
Test Pressure
class (Pa):600
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| Acoustic
Performance |
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| Sound
Reduction Index measurements were conducted at the AIRO
Acoustics Laboratory in accordance with BS2750: Part 3:
1980 and BS5821: Part 3: 1984, using a purpose built transmission
suite. AIRO is accredited as a NAMAS TESTING Laboratory
NO.0483. The weighted
sound reduction index, Rw = 45dB (BS5821: Part 3: 1984)
| Frequency
Hz |
R
dB |
Frequency
Hz |
R
dB |
| 100 |
23.2 |
800 |
49.8 |
| 125 |
26.9 |
1000 |
51.9 |
| 160 |
30.1 |
1250 |
51.0 |
| 200 |
36.8 |
1600 |
50.5 |
| 250 |
37.8 |
2000 |
50.0 |
| 315 |
37.1 |
2500 |
48.9 |
| 400 |
34.6 |
3150 |
43.3 |
| 500 |
43.1 |
4000 |
41.0 |
| 600 |
45.7 |
5000 |
44.5 |
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