Buy Felt Lap Vents — Armstrong Cheshire - Armstrong Cheshire
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Felt Lap Vents (Ventilation)

Ventilation is the intentional introduction of outdoor air into an internal space and is mainly used to control indoor air quality. View our range of brick vents, roof tile vents, wall space vents and floor vents.

What are Felt Lap Vents?

Felt Lap Vents are easy-to-fit products that are inserted on the inside of roofs to effectively treat condensation issues in lofts and attics.  

How Many Felt Lap Vents Do You Need?

It is recommended that one felt lap vent be placed at low levels of every other rafter spacing, at both sides of the roof space to ensure the cross-flow of ventilation. For extreme cases with persisting condensation issues, additional felt lap vents can be placed in the roof space to increase ventilation.

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