Vent Extension – Black – Underfloor Ventilation

Product Overview

The Telescopic Underfloor Vertical Vent Extension Piece is engineered to extend the vertical reach of a primary underfloor ventilation system. This modular component seamlessly connects to the main vent body, increasing the effective depth between the external air brick and the sub-floor void. Crafted from UV-stabilised, weather-resistant polypropylene, this extension offers long-term durability even in damp or below-ground conditions. By maintaining a continuous and unobstructed air pathway, it ensures efficient air exchange, drawing in fresh air and expelling moisture-laden air, regardless of deeper foundations or uneven ground levels.

Features & Benefits

• Increased Vertical Adjustment: Extends the reach of the main underfloor vent to accommodate deeper foundations and varying ground levels.
• Secure System Integration: Precision-engineered for seamless connection with compatible vent units, ensuring full airflow continuity.
• Durable Construction: Made from high-impact polypropylene, it is resistant to decay, moisture, and soil chemicals for a long service life.
• Preserved Airflow Efficiency: Ensures a clear ventilation path from the external air brick to the sub-floor void.
• Simplified Installation: Allows straightforward on-site adjustments without the need for bespoke ducting.
• Cost Effective: An economical solution to extend ventilation systems for non-standard depths.
• Regulatory Compliance: Supports UK Building Regulations, including moisture control and ventilation standards.

Applications

• Sub-Floor Ventilation Extension: Extends the vertical depth of vent systems to reach lower sub-floor voids.
• Deep Foundation Adaptation: Ideal for air brick positions above standard height due to uneven ground.
• New Build Installations: Ensures compliant underfloor ventilation in varied foundation designs.
• Refurbishment Projects: Adapts existing systems to meet modern standards or altered floor levels.
• Moisture Management: Prevents damp, condensation, and timber decay in underfloor spaces.

Installation Guidance

• Connection to Vent Unit: Securely attach to the primary vent body for a tight fit that maintains airflow.
• Height Adjustment: Stack one or more extensions as needed to achieve desired depth.