10 Best Manthorpe Felt Lap Vents Attic Roof Loft Ventilation in The UK

Last updated on 04/09/2025
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1
50 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation
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50 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation
Manthorpe
Why We Love It
  • Pack of 50.
  • Easy to fit.
  • Prevents roof condensation.
Main Highlights
  • Felt Lap Roof Vents.
  • Felt Lap Roof Vents.
  • Pack of 50.
  • Can be installed from inside of loft.
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
9.8
Exceptional
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9.8
Exceptional
Manthorpe
50 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation
Why We Love It
  • Pack of 50.
  • Easy to fit.
  • Prevents roof condensation.
Main Highlights
  • Felt Lap Roof Vents.
  • Felt Lap Roof Vents.
  • Pack of 50.
  • Can be installed from inside of loft.
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
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
Free Shipping
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
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
Free Shipping
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
3
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack
Manthorpe
Free Shipping
Why We Love It
  • Improves loft insulation ventilation.
  • Reduces condensation buildup.
  • Mitigates adverse weather effects.
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.
9.4
Superb
Product image 1
9.4
Superb
Manthorpe
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack
Free Shipping
Why We Love It
  • Improves loft insulation ventilation.
  • Reduces condensation buildup.
  • Mitigates adverse weather effects.
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.
4
Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow
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Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow
Manthorpe
Free Shipping
Why We Love It
  • Efficient airflow system.
  • Fits various joist centers.
  • Easy and secure installation.
Main Highlights
  • 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
9.3
Superb
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9.3
Superb
Manthorpe
Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow
Free Shipping
Why We Love It
  • Efficient airflow system.
  • Fits various joist centers.
  • Easy and secure installation.
Main Highlights
  • 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
5
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
9.1
Superb
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9.1
Superb
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
6
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
8.9
Excellent
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8.9
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
7
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
Manthorpe
3% Off
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.
8.7
Excellent
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8.7
Excellent
Manthorpe
Pack 20 Roofing Felt Lap Vent Stops Loft roof Condensation/Attic Space Ventilation Airflow
3% Off
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.
8
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
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.
8.7
Excellent
Product image 1
8.7
Excellent
Manthorpe
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.
9
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.
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.
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
Free Shipping
Why We Love It
  • Prevents roof condensation effectively.
  • Easy installation from inside loft.
  • Pack of 10 offers value.
Main Highlights
  • Felt Lap Vent Prevents Roof Condensation
  • Pack of 10
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
  • Can be installed from inside of loft
8.7
Excellent
Product image 1
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8.7
Excellent
Homesmart
10 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation
Free Shipping
Why We Love It
  • Prevents roof condensation effectively.
  • Easy installation from inside loft.
  • Pack of 10 offers value.
Main Highlights
  • Felt Lap Vent Prevents Roof Condensation
  • Pack of 10
  • Easy to fit just slots between the felt laps.
  • Prevents roof condensation and moisture drops.
  • Can be installed from inside of loft

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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 Manthorpe, 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 9781 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.

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