INSTALL - Clip between the felt joins, the vents then allow more airflow in the loft to prevent condensation. Included Components Felt Lap Vents. DRY LOFT SPACE - Use to increase airflow in the loft space, and prevent condensation.
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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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3,000mm² airflow per G630.
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Felt Lap Roof Vents are a quick and easy solution for improving loft ventilation and preventing condensation. Designed for universal use, they fit seamlessly between joists spaced from 350mm to 600mm.
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Felt Lap Vent Prevents Roof Condensation Pack of 10 Prevents roof condensation and moisture drops. Easy to fit just slots between the felt laps. Can be installed from inside of loft. The 3 felt clips secure the product in place even if the felt is degraded of loose. Can be fitted between 400mm joists and 600mm joist openings. Provides 3000mm air flow per unit. Felt lap dimensions 275mm x 190mm Meets building regulations. The Manthorpe Felt Lap Vent is a refurbishment product designed to increase the amount of ventilation into existing roof spaces. Usually fitted retrospectively to properties with additional loft insulation recently installed, however the Felt Lap Vent will help to combat the problem of condensation build up in any roof space with a lapped felt/membrane construction.
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INSTALL - Clip between the felt joins, the vents then allow more airflow in the loft to prevent condensation. DRY LOFT SPACE - Use to increase airflow in the loft space, and prevent condensation. Included Components Felt Lap Vents.
eBay
3,000mm² airflow per G630.
eBay
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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