features
- Natural slate finish
- Low profile vents
- Blocks wind driven rain
-
Reduces felt tearing
guidance
Full installation details are available on request from the Technical Department.
Slate Cowl Vent Technical Data
| Slate Vent |
Ventilation Area |
Airflow Resistance |
Roof Pitches |
Water Resistance |
| CV10K |
10 000mm2 |
N/A |
Over 20° |
Exceeds all relevant parts of DoE Partners in Technology Programme |
| CP10K |
10 000mm2
|
18.5 Pascals @ 30ltr/sec |
Over 20°
|
Exceeds all relevant parts of DoE Partners in Technology Programme
|
| CV20K |
20 000mm2 |
N/A
|
Over 20°
|
Exceeds all relevant parts of DoE Partners in Technology Programme
|
| CP20K |
20 000mm2
|
9.5 Pascals @ 30ltr/sec |
Over 20°
|
Exceeds all relevant parts of DoE Partners in Technology Programme
|
Installation: Cowl or Roofline Vents for Slate Roof
- Complete roofing to one course below the position for the slate vent.
- Hold vent in position as centrally as possible between the rafters and mark where the vent spigot touches the underlay. For 500mm x 250mm slates only - cut and remove section of batten.
- Cut underlay in a cross, fold up and back, nail over battens.
- Cut slates for next course below vent.
- Fit slate vent and nail to batten.
- Cut slates for next course (not for 600mm x 300mm roofline vents).
accessories