Flat Roof Abutment Ventilator - Grey - 1200mm
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Product Information
Full details
The Cavity Trays Flat Roof Abutment Ventilator is designed for roofing contractors and builders who need a high-performance solution to manage airflow at the critical junction where flat roofs meet vertical masonry walls. This 1200mm unit provides a robust 25,000mm² per metre of airflow while preventing pest intrusion via an integral grille, though users should note it requires precise alignment with masonry to ensure a weathertight seal.
All features
| Colour | Grey |
|---|---|
| Model Part Number | RAV-FL |
| Brand | Cavity Trays |
Extended Product Information
FAQs
What is the airflow performance of this unit?
This unit provides an airflow performance of 25,000mm² per metre run.
Can this be used on sloped roofs?
This ventilator is specifically designed for flat roof abutments where the roof meets vertical masonry walls.
How long is each individual ventilator unit?
Each unit is 1200mm in length.
Is the unit permanent?
While durable, the unit is designed to be removable to facilitate easy access during future re-roofing operations.
Does it require extra pest protection?
No, it features an integral insect-resistant grille as part of its standard design.
Is it compatible with other brands?
It is designed for compatibility with Cavity Trays horizontal intersection systems to ensure integrated moisture protection.
Troubleshooting
Airflow appears restricted
Check the insect-resistant grille for blockages such as leaves or accumulated dust and clean with a soft brush.
Unit not closing flush against masonry
Verify that the board upstand is perfectly vertical and that no debris is trapped in the pivot hinge mechanism.
Loose fixing to wall
Ensure the correct wall plugs for the specific masonry type were used and re-tighten the fasteners.
Pros and Cons
Pros
- Ensures effective, code-compliant ventilation at complex roof-to-wall junctions
- Durable heavy-duty construction for long-term reliability
- Removable design simplifies long-term roof maintenance
- Integrated insect mesh provides immediate pest defense
Cons
- Requires precise vertical installation for optimal water shedding
- Limited to specific flat roof and masonry intersection profiles
- Must be used in conjunction with secondary moisture protection layers for full compliance
Setup, Compatibility & Care
For installation, ensure the vertical upstand is level and clean before attempting to fix the pivot hinge. When fixing to masonry, use appropriate fasteners that will not cause spalling of the brickwork. This ventilator is part of a larger ecosystem; for best results, ensure your project utilizes complementary Cavity Trays horizontal intersection components. Regular maintenance involves inspecting the insect grille during roof servicing to ensure it remains clear of dust or debris that could impede airflow. If the unit is removed during roof maintenance, check the integrity of the hinge before re-installing to ensure a tight, pest-proof seal.