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Technical
DataTechnical Data |
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| Cowl and Roofline Vents Technical Data |
|
| Nett
Ventilation Area |
|
| CV20K
large cowl |
|
20,000mm² |
| CV10K
small cowl |
|
10,000mm² |
| RV8K
roofline |
|
8,000mm² |
| RV8K
small tile |
|
8,000mm² |
| HV1
economy slate |
|
7,200mm² |
|
|
|
|
| Air Flow Resistance |
| CP20K
large cowl |
|
9.5 Pascals at 30 litres/sec |
| CP10K
small cowl |
|
18.5 Pascals at 30 litres/sec |
| RP10K
roofline |
|
19.5 at 30 litres/sec |
| RP8K
small tile |
|
20.0 Pascals at 30 litres/sec |
|
|
|
| Water Resistance |
| All roof vents have been subjected to 3 separate wind & rain
penetration tests and a deluge test to simulate extremely harsh
weather, based on conditions developed as part of a DoE Partners
in Technology Programme as used by the Building Research Establishment
(BRE). All the Harcon roof ventilation range exceed the pass
criteria under all conditions. |
|
Vent |
Vent
Area |
Type
of Roof |
Spacing
to give continuous ventilation |
|
|
|
|
| |
|
|
5mm |
10mm |
25mm |
| CV10K |
10,000mm² |
slate/ tile |
2.0m |
1.0m |
|
| CV20K |
20,000mm² |
slate/ tile |
4.0m |
2.0m |
0.8m |
| RV8K |
8,000mm² |
small tile |
1.6m |
0.8m |
|
| RV10K |
10,000mm² |
slate/ tile |
2.0m |
1.0m |
|
| HV1 |
7,200mm² |
slate |
1.4m |
0.7m |
|
|
|
| Ridgeline Vents Technical Data |
|
| Nett
Ventilation Area |
|
TV3N/TV31N
gives12,500mm 2 (less for shorter ridge
vents), for 5mm continuous air gap install every 2.5m.
Air Flow Resistance
| TV3SN
with 125mm outlet |
4.0 Pascals at 30litres/sec |
| TV3SN
with 110mm outlet |
9.9 Pascals at 30litres/sec |
|
|
|
|
|
|
| Water Resistance |
| All roof vents have been subjected to 3 separate wind & rain
penetration tests and a deluge test to simulate extremely harsh
weather, based on conditions developed as part of a DoE Partners
in Technology Programme as used by the Building Research Establishment
(BRE). All the Harcon roof ventilation range exceed the pass
criteria under all conditions. |
|
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