Best Manthorpe Felt Lap Vents Attic Roof Loft Ventilation of 2026

Last updated on 03/04/2026
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1
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack

Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack

Ashbrook Roofing
Why we love it
  • Improves loft insulation ventilation.
  • Reduces condensation buildup.
  • Mitigates adverse weather effects.
Main Highlights
  • 50 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation
Show More
9.8
Exceptional
Product image 1
9.8
Exceptional
Ashbrook Roofing

Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack

Why we love it
  • Improves loft insulation ventilation.
  • Reduces condensation buildup.
  • Mitigates adverse weather effects.
Main Highlights
  • 50 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation
Show More
Value for Money
2
Pack 50 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow
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Pack 50 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow

Manthorpe
Main Highlights
  • 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. The specifier should ensure that the opening of felt laps on the property will not adversely increase the wind uplift load on the
Show More
9.6
Superb
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9.6
Superb
Manthorpe

Pack 50 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow

Main Highlights
  • 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. The specifier should ensure that the opening of felt laps on the property will not adversely increase the wind uplift load on the
Show More
3
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 40 Pack
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Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 40 Pack

Ashbrook Roofing
Why we love it
  • Fits various roof types.
  • Provides ample airflow.
  • Easy and secure installation.
Main Highlights
  • ✔ Can be fitted in joist centres with a range of 400mm - 600mm, suitable for most roofs
  • ✔ Provides the loft space with 3000mm² airflow per unit installed
  • ✔ Easy to fit product with a tapered lead to allow easy insertion between the felt lap vents
  • ✔ Each unit has an additional 3 clips to a secure fit, even on degrading shed felt.
Show More
9.4
Superb
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9.4
Superb
Ashbrook Roofing

Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 40 Pack

Why we love it
  • Fits various roof types.
  • Provides ample airflow.
  • Easy and secure installation.
Main Highlights
  • ✔ Can be fitted in joist centres with a range of 400mm - 600mm, suitable for most roofs
  • ✔ Provides the loft space with 3000mm² airflow per unit installed
  • ✔ Easy to fit product with a tapered lead to allow easy insertion between the felt lap vents
  • ✔ Each unit has an additional 3 clips to a secure fit, even on degrading shed felt.
Show More
4
50 x Refurbishment Eaves Panel Vents Suits 400mm Rafter Width for Roof Air Flow, Roof Felt Vents, Lap Vents Air Conditioner for Condensation, Keep Attic Space Ventilation Airflow
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50 x Refurbishment Eaves Panel Vents Suits 400mm Rafter Width for Roof Air Flow, Roof Felt Vents, Lap Vents Air Conditioner for Condensation, Keep Attic Space Ventilation Airflow

Home Smart
Why we love it
  • Promotes proper roof ventilation.
  • Easy to install and replace.
  • Pack of 50 for convenience.
Main Highlights
  • Enhanced Roof Ventilation: Designed to optimize airflow in your roof space, these panel vents prevent condensation and improve attic ventilation for a healthier, moisture-free environment. Our premium panels create a clear air gap between the loft insulation and felt.
  • Universal Fit for Rafters: Precision-engineered to suit standard rafter widths, these vents help reduce condensation build-up by promoting steady air circulation, protecting your roof and insulation from dampness.
  • Comprehensive Ventilation Solution: Loft ventilation pack of 5 vents (400mm) features an innovative arched design with multiple airflow channels, having size 360 x 350 x 48mm, ensuring maximum coverage and efficiency across your entire roof.
  • Durable and Long-Lasting: Roofing felt made from high-quality, weather-resistant materials, these panels are built to withstand the demands of both residential and commercial roofing systems.
  • Quick and Easy Installation – Simply align and push the vents into place between felt joins. No tools or specialist skills required, saving you time and effort. A flexible hinge allows the vents to adapt to any roof pitch.
Show More
9.3
Superb
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9.3
Superb
Home Smart

50 x Refurbishment Eaves Panel Vents Suits 400mm Rafter Width for Roof Air Flow, Roof Felt Vents, Lap Vents Air Conditioner for Condensation, Keep Attic Space Ventilation Airflow

Why we love it
  • Promotes proper roof ventilation.
  • Easy to install and replace.
  • Pack of 50 for convenience.
Main Highlights
  • Enhanced Roof Ventilation: Designed to optimize airflow in your roof space, these panel vents prevent condensation and improve attic ventilation for a healthier, moisture-free environment. Our premium panels create a clear air gap between the loft insulation and felt.
  • Universal Fit for Rafters: Precision-engineered to suit standard rafter widths, these vents help reduce condensation build-up by promoting steady air circulation, protecting your roof and insulation from dampness.
  • Comprehensive Ventilation Solution: Loft ventilation pack of 5 vents (400mm) features an innovative arched design with multiple airflow channels, having size 360 x 350 x 48mm, ensuring maximum coverage and efficiency across your entire roof.
  • Durable and Long-Lasting: Roofing felt made from high-quality, weather-resistant materials, these panels are built to withstand the demands of both residential and commercial roofing systems.
  • Quick and Easy Installation – Simply align and push the vents into place between felt joins. No tools or specialist skills required, saving you time and effort. A flexible hinge allows the vents to adapt to any roof pitch.
Show More
5
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 30 Pack
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Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 30 Pack

Ashbrook Roofing
Why we love it
  • Fits most roof designs easily.
  • Ensures optimal airflow efficiency.
  • Secure installation on degrading felt.
Main Highlights
  • ✔ Can be fitted in joist centres with a range of 400mm - 600mm, suitable for most roofs
  • ✔ Provides the loft space with 3000mm² airflow per unit installed
  • ✔ Easy to fit product with a tapered lead to allow easy insertion between the felt lap vents
  • ✔ Each unit has an additional 3 clips to a secure fit, even on degrading shed felt.
Show More
9.1
Superb
Product image 1
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9.1
Superb
Ashbrook Roofing

Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 30 Pack

Why we love it
  • Fits most roof designs easily.
  • Ensures optimal airflow efficiency.
  • Secure installation on degrading felt.
Main Highlights
  • ✔ Can be fitted in joist centres with a range of 400mm - 600mm, suitable for most roofs
  • ✔ Provides the loft space with 3000mm² airflow per unit installed
  • ✔ Easy to fit product with a tapered lead to allow easy insertion between the felt lap vents
  • ✔ Each unit has an additional 3 clips to a secure fit, even on degrading shed felt.
Show More
6
Pack 25 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow
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Pack 25 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow

Manthorpe
11% Off
Why we love it
  • Prevents roof condensation effectively.
  • Simple and easy installation.
  • Large pack of 25.
Main Highlights
  • Felt Lap Vent Prevents Roof Condensation
  • Pack of 25
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
  • Can be installed from inside of loft
Show More
8.9
Excellent
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8.9
Excellent
Manthorpe

Pack 25 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow

11% Off
Why we love it
  • Prevents roof condensation effectively.
  • Simple and easy installation.
  • Large pack of 25.
Main Highlights
  • Felt Lap Vent Prevents Roof Condensation
  • Pack of 25
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
  • Can be installed from inside of loft
Show More
7
Timloc 5560 Roofing Felt Lap Vent Stops Loft roof Condensation/Attic Space Ventilation Airflow (50)
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Timloc 5560 Roofing Felt Lap Vent Stops Loft roof Condensation/Attic Space Ventilation Airflow (50)

Eroofing
Why we love it
  • Prevents roof condensation effectively.
  • Easy to install vents.
  • Increases roof space ventilation.
Main Highlights
  • Felt Lap Vent Prevents Roof Condensation
  • Easy to fit, just slots between the felt laps
  • Can be installed from inside of loft
  • Designed to increase the amount of ventilation into existing roof spaces
  • Designed to increase the amount of ventilation into existing roof spaces
Show More
8.7
Excellent
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8.7
Excellent
Eroofing

Timloc 5560 Roofing Felt Lap Vent Stops Loft roof Condensation/Attic Space Ventilation Airflow (50)

Why we love it
  • Prevents roof condensation effectively.
  • Easy to install vents.
  • Increases roof space ventilation.
Main Highlights
  • Felt Lap Vent Prevents Roof Condensation
  • Easy to fit, just slots between the felt laps
  • Can be installed from inside of loft
  • Designed to increase the amount of ventilation into existing roof spaces
  • Designed to increase the amount of ventilation into existing roof spaces
Show More
8
Pack 20 Roofing Felt Lap Vent Stops Loft roof Condensation/Attic Space Ventilation Airflow
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Pack 20 Roofing Felt Lap Vent Stops Loft roof Condensation/Attic Space Ventilation Airflow

Ashbrook Roofing
Why we love it
  • Easy to retro-fit.
  • Increases roof ventilation.
  • Helps reduce condensation.
Main Highlights
  • The Manthorpe G630 Felt Lap Ventilator is a refurbishment product that is designed to increase the amount of ventilation into existing roof spaces with a lapped felt/ membrane construction.
  • The product is intended to be fitted retrospectively to properties that have had additional loft insulation recently installed. The vent will help to combat the problem of condensation build up caused by the extra insulation by adding additional ventilation into the roof space.
  • The product will not meet the requirement for roof space ventilation solely on its own it will only provide airflow through the felt laps into the batten void.
  • 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.
Show More
8.7
Excellent
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8.7
Excellent
Ashbrook Roofing

Pack 20 Roofing Felt Lap Vent Stops Loft roof Condensation/Attic Space Ventilation Airflow

Why we love it
  • Easy to retro-fit.
  • Increases roof ventilation.
  • Helps reduce condensation.
Main Highlights
  • The Manthorpe G630 Felt Lap Ventilator is a refurbishment product that is designed to increase the amount of ventilation into existing roof spaces with a lapped felt/ membrane construction.
  • The product is intended to be fitted retrospectively to properties that have had additional loft insulation recently installed. The vent will help to combat the problem of condensation build up caused by the extra insulation by adding additional ventilation into the roof space.
  • The product will not meet the requirement for roof space ventilation solely on its own it will only provide airflow through the felt laps into the batten void.
  • 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.
Show More
9
Pack 20 Roofing Felt Lap Vent Stops Loft Roof Condensation / Attic Space Ventilation Airflow by Manthorpe

Pack 20 Roofing Felt Lap Vent Stops Loft Roof Condensation / Attic Space Ventilation Airflow by Manthorpe

Ashbrook Roofing
Why we love it
  • Reduces roof space condensation.
  • Environmentally friendly with recycled content.
  • Easy installation between felt laps.
Main Highlights
  • The Manthorpe G630 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.
  • 3,000mm² airflow per G630, Can be fitted at joist centres ranging from 400mm to 600mm, Easy to fit, the tapered lead in helps to slot the product between the felt laps. The 3 felt clips help secure the product in place even if the edge of the felt is degraded
  • 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.
  • Note: You many notice some small flecks or blemishes visible on your felt lap vents. This is because we use recycled content to manufacture these products as part of our commitment to sustainability and protecting the environment. Please be assured this does not impact the performance of the product.
Show More
8.7
Excellent
Product image 1
8.7
Excellent
Ashbrook Roofing

Pack 20 Roofing Felt Lap Vent Stops Loft Roof Condensation / Attic Space Ventilation Airflow by Manthorpe

Why we love it
  • Reduces roof space condensation.
  • Environmentally friendly with recycled content.
  • Easy installation between felt laps.
Main Highlights
  • The Manthorpe G630 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.
  • 3,000mm² airflow per G630, Can be fitted at joist centres ranging from 400mm to 600mm, Easy to fit, the tapered lead in helps to slot the product between the felt laps. The 3 felt clips help secure the product in place even if the edge of the felt is degraded
  • 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.
  • Note: You many notice some small flecks or blemishes visible on your felt lap vents. This is because we use recycled content to manufacture these products as part of our commitment to sustainability and protecting the environment. Please be assured this does not impact the performance of the product.
Show More
10
10 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation
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10 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation

Homesmart
Why we love it
  • Prevents roof condensation effectively.
  • Easy installation from loft interior.
  • Fits seamlessly between felt laps.
Main Highlights
  • Felt Lap Roof Vents.
  • Menu options.
  • Can be installed from inside of loft.
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
Show More
8.7
Excellent
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8.7
Excellent
Homesmart

10 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation

Why we love it
  • Prevents roof condensation effectively.
  • Easy installation from loft interior.
  • Fits seamlessly between felt laps.
Main Highlights
  • Felt Lap Roof Vents.
  • Menu options.
  • Can be installed from inside of loft.
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
Show More

We scanned 798 products

We reviewed these offers relevant to the Manthorpe Felt Lap Vents Attic Roof Loft Ventilation within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Ashbrook Roofing, Manthorpe, Home Smart, Eroofing, Homesmart, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Manthorpe Felt Lap Vents Attic Roof Loft Ventilation in the market, we considered we took a deep dive into 3991 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that: