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How to Install Roof Tile Vents

How to Install Roof Tile Vents

Roof tile vents are important for the ventilation of your home and roofing space. In this article, we explore the skills, tools and experience necessary for the DIY installation of roof tile vents.

To DIY or not to DIY?

Installing roof tile vents is a fairly straightforward process. However, it may not be a project you want to take on if you have little DIY experience. Lets take a look at some of the pros and cons of DIY, roof tile vent installation below:


• Save money: As with any DIY project, you'll be sure to save money if you take on roof tile vent installation yourself. Professional installation of roof tile vents can cost anywhere from £200 to £1000 or more (excluding materials) depending on the size of the project.
• Skill Expansion: Taking on any DIY job is a great way to expand your personal skills and knowledge. Furthermore, knowing exactly what goes into a roof tile vent installation will also mean you are able to spot signs of damage early and understand how to maintain it properly.
• Sense of Achievement: There's nothing like a successful DIY project to create that feeling of accomplishment. If you're up for the task, theres little reason not to give it a go, providing safety remains top priority.


• Time: taking on anew DIY project with little experience will typically take far longer to complete than the same tasks performed by a professional. If this is something you're willing to accept, then the DIY route may be for you!
• Danger: When it comes to DIY, there is always an element of risk, and some projects are riskier than others. Installing roof tile vents requires working at height and in hazardous conditions. You can reduce the risk of these hazards by wearing correct safety equipment and adhering to recommended safety practices.
• Result: Proper installation of roof tile vents is vital to ensure their proper function, not to mention the protection of your roofing structure. If roof tile vents are installed poorly, you may encounter problems further down the road such as leaks, poor ventilation, wind uplift and mould. If you are not confident in your installation abilities, it's probably best to call in a professional.

old roof tiles

TO DIY - How to install roof tile vents?

Step 1: Determine How Many Roof Tile Vents are Needed

Before ordering and installing your roof tile vents, you'll need to determine how many are needed.

Calculate the total area of your roof in square feet or square meters. To do this, you'll want to multiply length by slope height, then multiply the result by two. To find these measurements, you may need to check your original building plans. Alternatively, if your roof is small and access is relatively easy, you can take these measurements by hand.

Step 2: Determine Ventilation Requirements

The amount of roof tile vents required in your home will depend on factors such as the roof pitch, attic insulation, and local climate conditions. As a general rule of thumb, you'll need approximately 1 square foot of ventilation area for every 150 square feet of loft space (for roofs without breathable felt). If your roof does have breathable felt, you can add 1 vent for every 300 square feet. These requirements can change depending on vent type so consult the manufacturer or retailer for more information.

home building plans

Step 3: Source Safety & Installation Equipment

Once you've determined how many roof tiles are needed, the next step is gathering all the tools and equipment necessary for the job. Consider any potential hazards and assess risks to determine what safety equipment you'll need. Typically, work at height requires a safety harness and depending on the size of your roof, you may also need some scaffolding. These are all things that can be hired but be sure to hire only from a reputable company who's equipment is in good working order and ensure you are clued-up on how to use all equipment safely and correctly.

Step 4: Remove Existing Roof Tile:

In the space you plan to install the roof tile vent, the old roof tile will need to be removed. Do so carefully, making sure not to damage any surrounding tiles.

Step 5: Mark Ventilation Hole in Roofing Felt:

On the under side of your roof tile vent you will find a hole. This needs to penetrate the roofing felt to allow ventilation. To get the correct size, refer to the manual supplied with your roof tile vent. Alternatively, measure the diameter of the hole top to bottom and side to side, then draw a square of the same size on the felt. Draw two diagonal lines from each corner of the square and pierce the centre with a hole. From this, cut along the diagonal lines and fold each triangle outwards.

Tack the top piece of roofing felt into the batten above with a nail.

Step 6: Fit the Roof Tile Vent:

Now, all that's left to do is fit the vent into the space of the removed tile, Align the hole on the underside of the vent with the hole you previously made in the felt. Secure with a nail to the batten underneath.

Not To DIY - How to Find a Reputable Professional

Finding a reputable professional can seem like a daunting task at first. A good place to start is by asking for recommendation from family, friends or even neighbours, especially if they have had similar work done.

The second option is to check online directories or review websites for roofing contractors in your area. Make a list of potential professionals and do a little research on each one; visit their websites, look for reviews and check for qualifications and certifications. Its also a good idea to look for roofers who are members of recognised trade associations such as the confederation of roofing contractors (CORC) or the National Federation of Roofing Contractors (NFRC). Additionally, get in touch with each potential professional to discuss your job specifications and request a quote.

Finally. compare quotes from each professional and make a final decision. Remember, cheaper is certainly not always better so cross reference each quote with the experience, certifications and testimonials of each professional to make the best decision.


Whether you choose to try your hand at DIY or call in a professional to do the job for you, fitting roof tile vents is certainly a worthwhile task that will help to ensure the long term health of your home.

Disclaimer: The information provided in this article is intended for general guidance purposes only. While we strive to provide accurate and up-to-date information, the installation of roof tile vents involves working at heights and with roofing materials, which can pose inherent risks and hazards. It's important to note that roofing work should be carried out by trained and experienced professionals who have the necessary skills, knowledge, and safety equipment to perform the task safely and effectively. Readers are advised to exercise caution and seek professional assistance if they are not familiar with the proper installation techniques or if they are unsure about their ability to complete the installation safely. We do not accept any liability for any injuries, damages, or losses that may occur as a result of using the information provided in this article. By attempting to install roof tile vents yourself, you acknowledge and accept the associated risks and release us from any responsibility or liability.
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