Buffalo Anti Flood Air Brick

Description

Buffalo Anti-Flood Air Brick Achieves Formal Kiwa BSI Kitemark (KA-26-1002) with Industry-Leading 4156 mm² Certified True Airflow

We are pleased to announce that the single-unit Buffalo Standard Anti-Flood Air Brick has officially been awarded the prestigious Kiwa BSI Kitemark certification (KA-26-1002), proving absolute compliance with BS 851188-1:2019 following rigorous independent tank testing with zero leakage.

For architectural specifiers, asset managers, and local authorities navigating the strict requirements of Awaab’s Law and the Social Housing Regulation Act, this certification represents a major evolutionary step in Property Flood Resilience (PFR) design.

Historically, specifying anti-flood assets has presented a design challenge regarding sub-floor building health. Under Building Regulations Approved Document F (Section 3), retrofitted modifications are legally barred from degrading a building's original ventilation performance, mandating a strict minimum threshold of 1500 mm² of continuous ventilation per linear metre of wall. Lower-airflow alternatives can inadvertently drop below this statutory line when spaced at standard intervals, trapping moisture and creating severe damp liabilities for the property owner.

To address this structural conflict, Larson Enterprises Ltd commissioned independent, third-party engineering analysis from PDSVISION. The verified data (Buffalo Brick Free Area Calculation 4156mm2.pdf) confirms that the single Buffalo unit delivers a true internal minimum free area of 4156 mm² through its tightest internal flood seal orifice.

At a standard 2-metre spacing, a single Buffalo unit delivers 2078 mm² per linear metre of continuous ventilation, comfortably exceeding the Building Regulations baseline and protecting landlords from the long-term structural and legal risks of sub-floor void choking.

Our fully updated, BIM-compliant object files have been revised to reflect these certified airflow parameters and are now available for direct integration into your Revit and digital twin workflows. Deliver verified flood resilience and building health simultaneously.

Download the updated, Kitemarked Buffalo BIM models directly from this listing.

For more information visit the Buffalo Flood Systems website here.