--- product_id: 58608207 title: "Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow" brand: "manthorpe" price: "R5444" currency: ZAR in_stock: true reviews_count: 8 url: https://www.desertcart.co.za/products/58608207-pack-40-roofing-felt-lap-vent-stops-loft-roof-condensation store_origin: ZA region: South Africa --- # Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow **Brand:** manthorpe **Price:** R5444 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow by manthorpe - **How much does it cost?** R5444 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/58608207-pack-40-roofing-felt-lap-vent-stops-loft-roof-condensation) ## Best For - manthorpe enthusiasts ## Why This Product - Trusted manthorpe brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Manthorpe | | Part Number | 8625350 | | Package Dimensions | 28 x 27 x 23 cm; 3.1 Kilograms | | Manufacturer reference | 8625350 | | Material | felt | | Item Package Quantity | 1 | | Batteries included? | No | | Batteries Required? | No | | Item Weight | 3.1 kg | ## Images ![Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow - Image 1](https://m.media-amazon.com/images/I/71Ax5y1ZuZL.jpg) ![Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow - Image 2](https://m.media-amazon.com/images/I/41WXCfJYr2L.jpg) ![Pack 40 Roofing Felt Lap Vent Stops Loft roof Condensation / Attic Space Ventilation Airflow - Image 3](https://m.media-amazon.com/images/I/415q68i8WEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Easy and simple to fit, and surprisingly effective *by J***E on Reviewed in the United Kingdom on 7 February 2021* Very good items , which proved very easy to fit between the felt overlaps in the felt.Sometimes the felt need a bit of prising apart.I used a non stick spatula from the kitchen for this purpose!The vents have cured the damp problem in my loft after about a fortnight. Even in the corners. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Worth getting! *by E***R on Reviewed in the United Kingdom on 20 February 2020* Worked like a dream! Our loft was getting so wet that the a frame was soaking too! Put all 40 in our felt (20m long bungalow on an exposed windy position with north-west driving rain) and within a month the a frame is dry and no more puddles of water or soaking wet boxes! Saved us having to get a whole new roof. Still, quite expensive for relatively simple pieces of plastic that probably cost pence to manufacture but they did the job! ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars The easiest and most economical solution to loft airflow problems *by M***N on Reviewed in the United Kingdom on 3 January 2015* Great contraption. I bought a pack of these in order to cure a bad condensation problem in my loft. The condensation was collecting on the inside of my roof felt and dripping onto everything that was stored in the loft. This was causing everything to go mouldy. I decided that the best thing to do is to try and improve the airflow through the loft space. These lap vents are by far the easiest to install and also the most economical of all the solutions currently available. I bought the 40 pack which was enough to do every other roof felt lap in my loft on a reasonably sized detached 4 bedroom house. I half expected there to be at least some air flow between the roof felt laps before fitting these. However there was absolutely zero airflow. As soon as you fit these lapvents you will feel the air breezing in. It's as though the loft breathes a sigh of relief. Make sure that you apply the same number of lapvents to both front and back sections of roof to promote an even airflow. Manthorpe were very helpful. I had 8 damaged lapvents when the package was delivered and they replaced them without question in very quick time. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/58608207-pack-40-roofing-felt-lap-vent-stops-loft-roof-condensation](https://www.desertcart.co.za/products/58608207-pack-40-roofing-felt-lap-vent-stops-loft-roof-condensation) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-06-02*