20K Slate Ventilator
Uses
- Large capacity ventilating slate to suit 600x300 and 500x250mm double lap slates.
- For new build or refurbishment work
- Suitable for roof pitches between 20° and 70°
- For use at high level or low level where the roof construction does not allow eaves or ridge vents
Features & Benefits
- Low profile design to blend with the roof line
- Slate grey caps to suit most man-made or natural slates
- Fully wind tunnel tested
- Built in downpipe to ensure direct ventilation path into the roof space
- Can be installed as required during slating process
- Efficient, unobtrusive and easy to install
- Prevents entry of birds and large insects
- Suitable for 600x300 or 500x250mm
- Complies with current Building Regulations; BS5250 & BS5534, ICP2
Installation
- Mark the position of the slate vent with a cross. Cut the adjacent slate to suit size of vent adaptor.
- Cut the underlay diagonally and peel back to the surrounding batten and under the slate for the sides. Fix the underlay onto the battens.
- Slide the vent with the spigot first into the opening. Using the centring line on the vent, align with the joint line of the two slates directly below. Fix vent by nailing through centre nail holes. Place the adjacent slates around the slate vent accordingly.
- Fix the slates either side of the vent ensuring that they overlap the side flashing by the correct distance.
- Clip the cap of the slate vent securely. Continue to fix subsequent slate courses as normal. No slate cutting of the course above the vent is required
Specifications
| Free Area | 20,000mm² per vent |
| Size | 500x250mm & 600x300mm |
| Material | Rigid PVC |
| Colour & Code | Slate Grey (9795-0429), Black (9795-0450), 150mm adaptor (979700) |
| Suggested spacing | 5000mm²/m = 4.0m, 10 000mm²/m = 2.0m, 25 000mm²/m = 0.8m |
