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Products Wood PVC-U Secondary Glazing Glass Fly Screens General Info About Us Contact Us You Should Know Comments Prestige 
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The choice when sound insulation or in conservation area's. Secondary glazing can incorporate
Stadip Silence glass to give high sound reduction levels.
It is made to fit to the inner reveal of the existing window and maintain the original character of the building. It has excellent draught proofing properties. Installation is quick with the minimum amount of disruption, of particular importance in the work environment. It is suitable for Listed buildings, flats, commercial and domestic properties.  | 
Water Tightness BS6735.
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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 test was preformed 19 September 1997.
The Weighted Sound Reduction Index, Rw=45db (BS5821: Part3: 1983)
| 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 |
| 630 | 45.7 | 5000 | 44.5 |
Test for Water tightness:
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Test at the University of Paisley. 1 July 1999 in accordance with BS6375 Part1: Water Temperature 17 degrees centigrade classified for water tightness. Test pressure class (Pa):300
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Air Permeability:
Test at the University of Paisley. 1 July 1999 in accordance with BS5368 Part1: Air Temperature 19.5c, total window area 2.01m2, this window is classified for air permeability as follows: Test pressure class (Pa):600
| Rate of Air Permeability (m3/h per meter length of opening joint) |
 Pressure Difference (Pa) |