Manthorpe Felt Lap Vent
Product code: RJJ41300
A refurbishment product designed to increase the amount of ventilation into existing roof spaces.
Product description
The Manthorpe Felt Lap Vent is usually fitted retrospectively to properties with additional loft insulation recently installed, however, the Felt Lap Vent will help to combat the problem of condensation buildup in any roof space with a lapped felt/membrane construction.
The product has been designed as a remedial solution to help overcome the build-up of condensation in the roof space, however like all products that open the felt lap to provide ventilation it does not meet the code of practice BS 5534:2014+A2:2018 6.2.1.1. The specifier or user should be aware that the opening of felt laps on the roof may adversely affect the driving rain resistance of the slates, tiles or shingles, as well as increase the wind uplift forces acting on them.
Product details
Dimensions
275mm x 194mm
Panel Depth
20mm
Material
Polypropylene
Airflow Area
3000mm2
Brand
Manthorpe
Manufacturer Brand Name
Manthorpe
Manufacturer Product Code
G630
Barcode
5038108009620
Key features
- Easy to fit, the tapered lead in helps to slot the product between the felt laps
- 3,000mm² airflow per G630
- The 3 felt clips help secure the product in place even if the edge of the felt is degraded
- Can be fitted at joist centres ranging from 400mm to 600mm