Visqueen Air Brick Gas Outlet – Terracotta

Visqueen Airbricks are manufactured from UV stabilised polypropylene – this unit is available in terracotta. The airbrick replaces an external masonry brick. It incorporates a front mounted louvered grill to permit airflow while blocking out wind driven rain and prohibiting large insects from gaining access.

Visqueen Adjustable Z Vent and Airbrick system is used within external masonry cavity wall constructions to provide a clear airflow passage to the void beneath precast suspended segmental ground floors e.g. beam and block.

The system is used to achieve a passive subfloor ventilation system in accordance with BS8485:2015 + A1:2019, effectively diluting any hazardous ground gases accumulating in the underfloor void.

The telescopic feature enables the vent to adjust vertically within the cavity to between three and five brick courses (225mm and 375mm). The airbrick replaces individual masonry bricks in the external leaf.

The system includes a Visqueen Extension Sleeve which increases the adjustment of the vertical portion of the vent by a further two brick courses (150mm). Additional sleeves can be used to extend the coursing indefinitely. The extension sleeves can also be used to extend the horizontal portion of the vent e.g. for wider cavity applications.

Features and benefits

• Functional solution for exhausting ground gases from underfloor voids

Approvals and standards

• Visqueen certified with Quality Management System ISO 9001:2015
• Visqueen certified with Occupational Health and Safety System ISO 45001:2018
• Visqueen certified with Environmental Management System ISO 14001:2015