3,000mm² airflow per G630.
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Outsunny 7 x 4ft Lockable Metal Garden Tool Storage Shed, Outdoor Storage Shed with Foundation and vents, Light Brown
Aliexpress UK
The Felt Lap Vent is specifically designed to alleviate these issues, enhancing ventilation in existing roof spaces. Felt Lap Vent for Attic Spaces. Effective Roof Condensation Prevention. With its simple installation process and secure fittings, the Felt Lap Vent is the perfect addition to safeguard your roof's integrity.
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Outsunny 6.5 x 4FT Galvanised Metal Shed with Foundation Kit, Lockable Tool Garden Shed with Double Sliding Doors, Vents, Light
Aliexpress UK
Repeat the installation process with further lap vents until the required ventilation rate is achieved. • Can be fitted retrospectively after increased loft insulation. For specifiers including the lap vent, consideration must be given to increased risk of wind uplift and driving rain resistance outlined in BS5534:2014.
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8 x 6 ft Galvanised Garden Shed, Outsoor Metal Storage Shed with Double Doors Window Air Vents for Patio, Lawn, Grey
Aliexpress UK
BBA approved for use in Warm and Cold, Ventilated and Non Ventilated Roofs. Certified for use in warm and cold, ventilated and non-ventilated roofs. Water Vapour Resistance: 0.16. Water Vapour Transmission: 1258.
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PINGGO 7ft x 4ft Lockable Garden Metal Storage Shed Storage Roofed Tool Metal Shed w/ Air Vents Steel Grey
Aliexpress UK
Felt Vents for Loft: Each unit will provide 3000mm² of free airflow into the loft space. Lap Vents for Loft: Can be fitted at joist centres ranging from 400mm to 600mm, suitable for most roofs. The arched design can withstand greater pressure and has multiple holes to greatly increase ventilation.
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PINGGO 9x6ft Metal Garden Storage Shed with Lockable Double Doors Vents Foundation Waterproof Outdoor Tool Organizer House Brown
Aliexpress UK
If further ventilation is required, install one lap vent into every rafter space at low level or into lap joints at higher level. To provide typical ventilation, allow for 1 lap vent every alternate rafter space at low level, on opposite sides of the roof.
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Ye 7 x 4ft Metal Garden Storage Shed with Vents, Floor Foundation Kit and Lockable Double Doors, Light Brown
Aliexpress UK
Loft vents for the felt. Can message me to order a specific quantity if needed. Easy to use and apply to felt and highly effective
eBay
4x8 FT Resin Shed: Large Waterproof Outdoor Plastic Storage Shed with Floor, Lockable Door, Window & Vents for Garden Tools
Aliexpress UK
Felt Vents for Loft: Each unit will provide 3000mm² of free airflow into the loft space. Lap Vents for Loft: Can be fitted at joist centres ranging from 400mm to 600mm, suitable for most roofs. The arched design can withstand greater pressure and has multiple holes to greatly increase ventilation.
eBay
Artificial Flower Balls Hanging Decorative Simulated Fake Plant Landscaping Outdoor Courtyard Roof Home Garden Durable Decor
Aliexpress UK