---
product_id: 47894208
title: "DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft."
brand: "lapvent"
price: "R$2758"
currency: BRL
in_stock: true
reviews_count: 8
category: "Lap Vent"
url: https://www.desertcart.com.br/products/47894208-diy-fit-roof-vent-for-extractor-fan-to-vent-from
store_origin: BR
region: Brazil
---

# DIY Roof Vent 100mm Diameter Weatherproof Install DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft.

**Brand:** lapvent
**Price:** R$2758
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Ventilation Game!

## Quick Answers

- **What is this?** DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft. by lapvent
- **How much does it cost?** R$2758 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/47894208-diy-fit-roof-vent-for-extractor-fan-to-vent-from)

## Best For

- lapvent enthusiasts

## Why This Product

- Trusted lapvent brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **No Mess, No Fuss:** Say goodbye to core cutting and cleanup.
- • **Complete Fitting Kit:** Everything you need for a seamless setup.
- • **Proudly Made in the UK:** Support local craftsmanship with every purchase.
- • **Weather-Resistant Design:** Perfect for any weather conditions.
- • **Quick & Easy Installation:** Install from the loft without scaffolding!

## Overview

The DIY fit roof vent for extractor fans is a revolutionary solution for bathroom ventilation, allowing for quick and easy installation from the loft without the need for scaffolding or roof access. This complete kit includes a 3m flexi hose and all necessary components, making it ideal for DIY enthusiasts and professionals alike. Proudly made in the UK, it combines efficiency with quality craftsmanship.

## Description

Shop DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft.. Free delivery on eligible orders of £20 or more.

Review: Works great! Everything included - This product works as described. It was easy to fit, although working in the loft is never fun. Everything I needed was included in the kit, making this job breeze. I read the instructions carefully and soon realised that my roof was slightly different to what was described in the instructions. I had to modify the felt arrangement a little, but still used all of the items provided. The parts appear robust and well-made, these are high-quality parts. The instructions are clear but need to be read a couple of times before starting. You will, of course, need to make a base to sit/stand on when fitting. This is not a job to do standing on the joists. I would recommend this product to anybody that needs to install an extractor vent in a loft space, avoiding the need for outside access. The entire job took me about an hour to install.
Review: Easy fit piece of Kit. - Received on time. The actual principle appears sound. Easy and quick to fit. For that alone I rated it 4 stars. It is basically a piece of shaped plastic, a couple of small bits of wood, a couple of screws, a plastic strap, a hose clip and a vent hose. You pay for the convenience, not for the cost of the materials! I am sure the price will come down. For me, I paid for the convenience of not scrambling on a wet roof in the winter, rather a warm dry loft. I hope the unit proves it's worth and advertised glowing description!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Heritage Structural Ventilation Ltd |
| Part Number | EV1 |
| Manufacturer reference | EV1 |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft. - Image 1](https://m.media-amazon.com/images/I/31Z+X+3+CAL.jpg)
![DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft. - Image 2](https://m.media-amazon.com/images/I/414PBOIZEyL.jpg)
![DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft. - Image 3](https://m.media-amazon.com/images/I/41GAfsyKSLL.jpg)
![DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft. - Image 4](https://m.media-amazon.com/images/I/41uUI-AEqaL.jpg)
![DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft. - Image 5](https://m.media-amazon.com/images/I/71yw5pystOL.jpg)

## Questions & Answers

**Q: can you fit 6ins fan to 4ins duckting**
A: Yes,you can buy a 6inch to 4 inch reducing collar.

**Q: Will this be suitable for use under a slate roof?**
A: Thank you for your interest in lapVent. To answer your question, yes, it is suitable for use under a natural slate roof, providing the roof is traditionally built with membrane/felt (for the lapVent to fit into) which needs to be in good condition throughout. You need to make sure that the gap between the rafters is no less than 315mm wide or there will not be enough room for the lapVent to fit.

**Q: How does this not rot the battens that the tiles sit on?**
A: Hi thank you for your interest in lapVents. The filtered lapVent system consists of a sloped, multifaceted reservoir area which unlike all similar products controls ingress as well as extraction.
During the seasons, the undersides of all common free-laid roofing materials will remain damp to some extent or other throughout their lives. The lapVent system does not add to this but in fact ‘improves’ aeration.  Uninterrupted airflow through interconnected batten cavities has preserved vulnerable roofing materials for centuries.
Any moisture extraction/exhaust/ingress condenses on the cooler side of lapVents unique mesh faced aperture and settles on collective surfaces that direct any flow harmlessly down the weather-side of the underfelt, and so to atmosphere.
The entirely unique Millennium Award lapVent system is expertly designed to do the job. Hope this answers your question.

**Q: What is the "weather side" of the felt? The blacker side or the grayer side?**
A: The blacker side is the weather side.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great! Everything included
*by C***S on 11 February 2023*

This product works as described. It was easy to fit, although working in the loft is never fun. Everything I needed was included in the kit, making this job breeze. I read the instructions carefully and soon realised that my roof was slightly different to what was described in the instructions. I had to modify the felt arrangement a little, but still used all of the items provided. The parts appear robust and well-made, these are high-quality parts. The instructions are clear but need to be read a couple of times before starting. You will, of course, need to make a base to sit/stand on when fitting. This is not a job to do standing on the joists. I would recommend this product to anybody that needs to install an extractor vent in a loft space, avoiding the need for outside access. The entire job took me about an hour to install.

### ⭐⭐⭐⭐ Easy fit piece of Kit.
*by A***1 on 14 January 2018*

Received on time. The actual principle appears sound. Easy and quick to fit. For that alone I rated it 4 stars. It is basically a piece of shaped plastic, a couple of small bits of wood, a couple of screws, a plastic strap, a hose clip and a vent hose. You pay for the convenience, not for the cost of the materials! I am sure the price will come down. For me, I paid for the convenience of not scrambling on a wet roof in the winter, rather a warm dry loft. I hope the unit proves it's worth and advertised glowing description!

### ⭐⭐⭐⭐⭐ DIY Roof Vent
*by K***I on 26 March 2018*

I am delighted with this product. I live in a listed building that could have necessitated scaffolding if a roof tile vent had to be fitted. We, as complete novices, were able to fit it in the loft, following the online demonstration, without difficulty. The electrician fitted the extractor fan and connected it easily. It seems to be working effectively.

## Frequently Bought Together

- DIY fit roof vent for extractor fan to vent from a bathroom or ensuite. No need to get on the roof or remove a roof tile with lapVent. Fitted from the loft.
- 10 x Felt Lap Vents Prevents Loft roof Condensation. Attic Space Ventilation

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-27*