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- Article author: Christian Taylor
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š§± Introduction: Stocking the Right Ventilation for the Right Job
When it comes to ventilation in domestic construction, few components are as misunderstood or overlooked as soffit vents and air bricks. Both play critical roles in keeping homes dry, breathable, and compliant with regulations. For stockists, understanding when to recommend or stock each option means delivering the right product and advice to installers, contractors, and merchants.
In this edition of The Stockistās Handbook, we break down the key differences between soffit vents or air bricks, explore when each is typically specified, and showcase the trusted products available from Stadium Building Products.
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Ā Feature Ā |
Ā Soffit Vents Ā |
Ā Air Bricks Ā |
Ā Application Ā |
Ā Roofline ventilation (eaves) Ā |
Ā Subfloor or wall ventilation Ā |
Ā Installed in Ā |
Ā Horizontal soffit boards Ā |
Ā Brickwork at or below DPC level Ā |
Ā Main purpose Ā |
Ā Prevent condensation in roof space Ā |
Ā Reduce moisture in underfloor voids Ā |
Ā Airflow style Ā |
Ā Passive, continuous airflow Ā |
Ā Localised cross-ventilation Ā |
Ā Appearance Ā |
Ā Circular or rectangular grills Ā |
Ā Brick-sized louvred or slotted units Ā |
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Soffit ventilators are the go-to choice for pitched roofs with eaves. Builders often install them in new builds or roof refurbishments to prevent damp and mould in loft spaces.
Key advantages:
Easy to install in plastic or timber soffits
Inconspicuous once fitted
Supports compliance with Part F of the Building Regs
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Colours: Brown (BM406/B), White (BM406/W)
88mm outer diameter, 76mm spigot
Centres for roof pitches over 15 degrees.
Free air space: 25 cm²
Rated input: 12 kW
Pack size: 20
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Colours: Brown (BM407/B), White (BM407/W)
145mm x 85mm faceplate, dual 75mm dia. spigots
Free air space: 45.6 cm²
Rated input: 16.1 kW
Centres for roof pitches over 15 degrees. Overlapping double 76mm (3ā) holes.
Air bricks are best for subfloor ventilation, wall ventilation, or serving combustion appliances. Theyāre often specified in refurbishment projects, timber floor installations, or homes with suspended floors.
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Designed to match brick dimensions
Various finishes to suit regional building styles
Used with cavity liners or sleeves for through-wall systems
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216 x 76mm
Free air space: 72 cm²
Rated input: 21.4 kW
Pack size: 50
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Colours: Terracotta (BM483/T), Sand (BM483/S), Brown (BM483/B)
216 x 76mm
Free air space: 46 cm²
Rated input: 16.2 kW
Pack size: 10
Ribbed finish for mortar grip
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Colours: Terracotta, Rustic Red, Sand, Brown
216 x 152mm
Free air space: 125 cm²
Rated input: 32 kW
Pack size: 10
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Brown finish
66 cm² free air space
Rated input: 20.2 kW
Pack size: 10
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Colours: Grey (BM413/G), Sand (BM413/S), Terracotta (BM413/T), Brown (BM413/B)
104 x 65 x 10mm
Internal insect and water battier
Pack size: 25
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For builders and contractors, both are essential. As a stockist, you should:
Offer a core range of both soffit vents and air bricks
Provide multiple colours and finishes to suit regional requirements
Bundle with liners, sleeves, and cavity extensions to upsell complete solutions
Ensure staff can advise on application use cases
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Curious how this fits into wider ventilation systems? Check out our previous guide:
š Why Ventilation Is So Important
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Approved Document F ā Ventilation Regulations
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Browse our full ventilation range, including soffit vents and air bricks, in the Stadium Product Catalogue.
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We help stockists offer ventilation products with confidence.
š© Contact our team today for pricing, merchandising, or product advice.
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