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Home Roof Vents Felt Lap Ventilators Manthorpe Felt Lap Vent - White

Manthorpe Felt Lap Vent - White

Code:
G630SPLIT
Brand:
Manthorpe

Suitable for refurbishment applications, the Manthorpe Felt Lap Vent is designed to increase the amount of ventilation in existing roof spaces. Though usually fitted retrospectively to properties with additional loft insulation installed, the felt lap vent will help combat the... Read More

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Description Specification Downloads Q&A Reviews

Description

Suitable for refurbishment applications, the Manthorpe Felt Lap Vent is designed to increase the amount of ventilation in existing roof spaces. Though usually fitted retrospectively to properties with additional loft insulation installed, the felt lap vent will help combat the problem of condensation build-up in any roof space with a lapped felt/membrane construction.

Following installation, each unit provides 3,000mm² per metre of free airflow into the batten void. This helps prevent the risk of condensation built up caused by the additional insulation.

Features & Benefits: Manthorpe Felt Lap Vent - White

  • Easy to fit using tapered lead in to help slot the product between felt laps
  • Three felt clips help secure the product in place (even when the edge of the felt is degraded)
  • Suitable for fitting at joist centres ranging from 400mm to 600mm
  • 3,000mm²/m free airflow helps prevent the risk of condensation

Please note:

  • Insulation must be used in conjunction with the vent as it will not meet the requirement for roof ventilation solely on its own and only provide airflow through the felt laps.
  • Other measures may need to be in place to ensure adequate ventilation is provided for the roof space.

Details

Type Lap Vent Colour White Material Polypropylene Profile Low Profile

Questions & Answers

Question:

When inserted in between felt in the attic roof, will this product not create a slight opening between each roof tile from the outside? And therefore allowing insects to enter the attic from the roof tile gaps?

Answer:

technically no, as it doesn't go all the way to the bottom of the felt

Question:

How many vents are required for a typical semi detached roof space

Answer:

They are fitted on every exposed overlap of felt - have a look at the fitting instructions on our site, 

Question:

Manthorpe Felt Lap Vent - White, will I be able to fit this product between joists that have a gap of only 300mm?

Answer:

These are 275mm wide so you should have room to fit them.

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