Description:
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 tiles/slates or the driving rain resistance of the roof, for more information see BS 5534:2003, 5.8.1 & 6.2.1.1.
- 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.
Installation:
- Initially it is recommended that one ventilator be placed into the laps in every other rafter bay, down at low level (as near to the eaves as possible) and on both sides of the roof space to ensure a cross flow of ventilation.
- In extreme circumstances, additional ventilators can be positioned in the vacant felt laps to increase the overall amount of ventilation provided.
- Only one product should be positioned into a single felt lap. If additional vents are required, then more vents can be placed into the other felt laps within the same rafter spacing at higher intervals.
- The product can be installed in roof spaces with rafter spacings ranging from 400mm to 600mm.
- Each unit will provide 3,000mm² of free airflow into the batten void.
- For further information on the recommended ventilation requirements for roof spaces refer to BS 5250 Code of Practice for Control of Condensation in Buildings.
Reviews:
5.0 out of 5 stars Simple solution to possibly serious problem
Excellent product. Solved the problem of condensation in the roof space after increasing loft insulation.
5.0 out of 5 stars Dry loft...
I have a T shaped roof in a 4 bed detached house.The eaves got covered by loft insulation by the previous owner, and last winter I had dripping water off the roof felt and mold on fabric stored in the loft.I got the 50 pack and it took hardly any time to fit them, my house has concrete roof tiles and some heavy thick felt, and my teenaged girls fitted a few.After I fitted them, I had my girls shut the loft hatch with me in the loft (they failed the trust exercise...) and I could feel a breeze in the loft space.This winter, no issues what so ever. The air feels fresher and less dusty when I go into the loft now.Expensive for some plastic, but cheap compared to other solutions.
5.0 out of 5 stars They work!
I’ve bought and fitted 100 of these in my loft now over 2 winters, I can safely say that they work, I have a supper insulated bungalow with old fashioned roof felt (none breathable) every winter it would be dripping wet through in the loft…. there’s not a drop of moisture build up now and you can feel the movement of air now… a great buy definitely recommend if you have a problem with condensation in the loft
5.0 out of 5 stars Simple to fit and effective.
Our 1970's house has a moderate problem with roof space condensation. These simple to fit vents have increased air flow and seem to have cleared the problem. The house is about 140 sq. m and 50 vents seems to be about the right amount. Quite expensive for what they are, but much cheaper and easier than other solutions.
5.0 out of 5 stars Really handy way to ventilate a roof space.
I like everything about this product. If the roof is normal felt and lath with concrete tiles then the ventilators slip in easily from the roof space and form a good air path. I fitted them high up and low down on both sides of the roof and they produced a good cross draught. The roof space is now much fresher and no condensation is formed even during very cold weather.
5.0 out of 5 stars WORK WELL AND EASY TO FIT
WE USE THESE FOR VENTILATION AND THEY WORK VERY WELL AND EASY TO FIT ALSO OR GET A ROOFER TO FIT FOR YOU
5.0 out of 5 stars Quick effective grear value
Quick and easy to install. Would definitely recommend. We had alot of condensation in the loft this year, within 3 weeks of fitting these as you can see from thr pictures we could see improvements. Now even following the recent beast from the east with ambients below freezing for a week the loft is dry, no condensation at all on the roof felt
5.0 out of 5 stars Good quality, easy to fit
Excellent product, easy to fit, perfect for increasing ventilation in loft space to cut down on condensation buildup. Great price & fast delivery.
Visit the Manthorpe Store
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack
AED1,01582
Quantity:
Order today to get by 7-14 business days
This item qualifies for free delivery
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Imported From: United Kingdom
At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.
BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.
Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.
If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.
Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.
All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.
While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.
Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.
BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.
All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.
All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.
Similar suggestions by Bolo
More from this brand
Share with
Or share with link
https://www.bolo.ae/products/KO01A035ZCY
Visit the Manthorpe Store
Manthorpe Felt Lap Vents Attic Roof Loft Ventilation Cures Condensation 50 Pack
AED1,01582
Quantity:
Order today to get by 7-14 business days
This item qualifies for free delivery
Imported From: United Kingdom
At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.
BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.
Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.
If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.
Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.
All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.
While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.
Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.
BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.
All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.
All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.
Description:
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 tiles/slates or the driving rain resistance of the roof, for more information see BS 5534:2003, 5.8.1 & 6.2.1.1.
- 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.
Installation:
- Initially it is recommended that one ventilator be placed into the laps in every other rafter bay, down at low level (as near to the eaves as possible) and on both sides of the roof space to ensure a cross flow of ventilation.
- In extreme circumstances, additional ventilators can be positioned in the vacant felt laps to increase the overall amount of ventilation provided.
- Only one product should be positioned into a single felt lap. If additional vents are required, then more vents can be placed into the other felt laps within the same rafter spacing at higher intervals.
- The product can be installed in roof spaces with rafter spacings ranging from 400mm to 600mm.
- Each unit will provide 3,000mm² of free airflow into the batten void.
- For further information on the recommended ventilation requirements for roof spaces refer to BS 5250 Code of Practice for Control of Condensation in Buildings.
Reviews:
5.0 out of 5 stars Simple solution to possibly serious problem
Excellent product. Solved the problem of condensation in the roof space after increasing loft insulation.
5.0 out of 5 stars Dry loft...
I have a T shaped roof in a 4 bed detached house.The eaves got covered by loft insulation by the previous owner, and last winter I had dripping water off the roof felt and mold on fabric stored in the loft.I got the 50 pack and it took hardly any time to fit them, my house has concrete roof tiles and some heavy thick felt, and my teenaged girls fitted a few.After I fitted them, I had my girls shut the loft hatch with me in the loft (they failed the trust exercise...) and I could feel a breeze in the loft space.This winter, no issues what so ever. The air feels fresher and less dusty when I go into the loft now.Expensive for some plastic, but cheap compared to other solutions.
5.0 out of 5 stars They work!
I’ve bought and fitted 100 of these in my loft now over 2 winters, I can safely say that they work, I have a supper insulated bungalow with old fashioned roof felt (none breathable) every winter it would be dripping wet through in the loft…. there’s not a drop of moisture build up now and you can feel the movement of air now… a great buy definitely recommend if you have a problem with condensation in the loft
5.0 out of 5 stars Simple to fit and effective.
Our 1970's house has a moderate problem with roof space condensation. These simple to fit vents have increased air flow and seem to have cleared the problem. The house is about 140 sq. m and 50 vents seems to be about the right amount. Quite expensive for what they are, but much cheaper and easier than other solutions.
5.0 out of 5 stars Really handy way to ventilate a roof space.
I like everything about this product. If the roof is normal felt and lath with concrete tiles then the ventilators slip in easily from the roof space and form a good air path. I fitted them high up and low down on both sides of the roof and they produced a good cross draught. The roof space is now much fresher and no condensation is formed even during very cold weather.
5.0 out of 5 stars WORK WELL AND EASY TO FIT
WE USE THESE FOR VENTILATION AND THEY WORK VERY WELL AND EASY TO FIT ALSO OR GET A ROOFER TO FIT FOR YOU
5.0 out of 5 stars Quick effective grear value
Quick and easy to install. Would definitely recommend. We had alot of condensation in the loft this year, within 3 weeks of fitting these as you can see from thr pictures we could see improvements. Now even following the recent beast from the east with ambients below freezing for a week the loft is dry, no condensation at all on the roof felt
5.0 out of 5 stars Good quality, easy to fit
Excellent product, easy to fit, perfect for increasing ventilation in loft space to cut down on condensation buildup. Great price & fast delivery.
Similar suggestions by Bolo
More from this brand
Share with
Or share with link
https://www.bolo.ae/products/KO01A035ZCY