How to install a roof vent

View the video

How to install a roof vent

View the video

Project Overview

Installing a roof vent is a simple DIY project that will help keep your roof-space cool in summer and dry in winter. It’s easy to do yourself and we’ll show you how. Learn about all the tools you’ll need, what safety precautions to take when working on a roof, how to waterproof your vent and how to adjust the vent so that it sits correctly. 

Continue to step-by-step instructions

Step by Step Instructions

1 Before you start
2 Remove the tiles
3 Install the flashing
4 Secure the flashing
5 Install the whirly-vent on the flashing
6 Adjust the angle of the whirly-vent
7 Secure the whirly vent
  • Step 1. Before you start

    Before you start installing the roof vent, take the appropriate safety precautions. Make sure that you have easy access to get up and down the roof, and that your ladder is secure. Install perimeter scaffolding around the roof area where you’re working and make sure you’re wearing work boots or appropriate footwear. Also, check with your local government to see if you need permission to install the roof vent.

  • Step 2. Remove the tiles

    Choose the location where you’re going to install the roof vent. Near the top of the roof is ideal for extracting heat from the roof-space during summer. Remove two tiles that are next to each other. To remove the tiles, lift up the tiles above them and slide the tiles out. This space is where the flashing will be installed.
  • Step 3. Install the flashing

    Install the flashing by sliding it into place, so that it is sitting under the tiles above it. Run a bead of silicone on the two tiles next to the flashing. Use the mallet to gently tap down the sides of the flashing, so that it follows the profile of the tiles. With your hands, roll the front edge of the flashing, to form a lip. This gives the flashing more water protection. Make sure you’re wearing gloves when working with the flashing because it has sharp edges.
  • Step 4. Secure the flashing

    Secure the flashing by drilling one end of the strap that comes with the roof vent, to the roof batten under the flashing. Make sure the strap is attached to the batten, so that it is approximately in the centre of the flashing. Bend the strap up and over the lip of the roof vent. Use your hands to shape the strap, so that it matches the front profile of the flashing.

  • Step 5. Install the whirly-vent on the flashing

    Do not remove the foam packers on the whirly-vent before you install it. The packers stop the vent from spinning around. Place the whirly-vent on top of the flashing, so that it is sitting snugly. Use the cordless drill to screw the whirly-vent to the flashing using the pre-drilled holes in the vent.

  • Step 6. Adjust the angle of the whirly-vent

    After securing the whirly-vent to the flashing, remove some of the foam packers so that you can turn the vent to its optimal angle. The top and bottom of the whirly-vent turn independently. Adjust the two halves of the whirly-vent to change the vent angle. Keep adjusting it until the top of the whirly-vent is sitting flat when you look at it from all angles. If it isn’t, the vent won’t work efficiently. Once the whirly-vent is sitting flat, take the last of the foam packers out, to make sure the vent spins freely.

  • Step 7. Secure the whirly vent

    Use the cordless drill to screw down the flanges on the side of the roof vent. This stops the bottom half of the vent from moving. Drill three screws into the pre-drilled holes at the bottom of the whirly-vent to fix it into position. After securing the vent, clean up the silicone on the sides of the flashing and make sure the front of the flashing is properly tucked over the tile. Don’t forget to take away any tiles that you removed during the installation.
Man marking hole in ceiling 07:37

Roofing How to install a skylight Making the most of the available natural light is a great way to save on your energy costs. We’ll show you how to install a skylight to brighten up the rooms in your home.

paint roof

Roofing How to paint a roof Whether it's tiled or corrugated, painting your roof is a great way to add value to your home. To get the job done properly and safely, it's important to prepare thoroughly and use the right equipment.

Person securing the flashing to the roof 03:48

Roofing How to install a roof vent Find out how to install a roof vent to keep your roof-space cooler in summer and drier in winter.

Cleaning roof tiles spraying anti moss 02:19

Roofing How to clean roof tiles Cleaning old roof tiles is a quick way to give any house a facelift. Discover how to do the cleaning yourself.

gutter guards 01:26

Roofing How to choose gutter guards Gutter guards play an important role in maintaining your home and keeping it safe. There’s four different types including plastic, galvanised mesh and powder coated metal gutter guards, as well as the hedgehog filter. Find out which one is best for ...

Man removing the temporary blocks 07:27

Roofing How to install attic ladders Create more space in your house. This video will show you how to carefully frame a cavity and install an attic ladder.

how-to-replace-a-fascia-board 03:36

Roofing How to replace a fascia board This video shows you how to repair a rotten section of fascia board, without replacing the whole board.

Man drilling the plasterboard to the battens 04:12

Roofing How to plasterboard a ceiling Find out everything you need to know about how to plasterboard a ceiling. It’s easy to do yourself, just follow these steps.


Planting & Growing How to create an allergy-friendly garden If you suffer from hay fever or other allergies, then being out in the garden can, at times, be less than enjoyable. But there are some steps you can take to create an allergy-friendly garden so you can spend more time gardening and less time sneezi...

pallet coffee table

Outdoor Living Five D.I.Y. ideas to update your outdoors Autumn is a great time of the year to tick off a few D.I.Y. projects from your to-do list. Here are a few good ideas to get you started.


Planters How to choose the right plant pot Pots are a great way to add colour, interest or texture to your outdoor space. Tuscan Path’s Elaine Foster shares her top tips on how to choose the perfect pot.


Planting & Growing How to plant and care for sunflowers Sunflowers are a great way to add colour to your garden, and they’re easy to grow and care for. Bunnings Greenlife buyer Katie explains the basics of how to grow sunflowers and shares some tips on how to care for them.


Planting & Growing How to care for orchids Orchids are a low-maintenance flower that can be grown indoors or outside in a protected location. And, with a little care, they will provide you with lots of colour.

DIY balcony and courtyard garden

Planters D.I.Y. balcony and courtyard garden Even if your outdoor space is limited to a balcony or courtyard, it doesn’t mean you have to miss out on having a garden. The team at Tuscan Path, who have been supplying pots to the Australian marketplace for over 40 years, share some ideas on how ...

 kitchen benchtop materials

Benchtops & Cabinets A guide to kitchen benchtop materials The perfect benchtop will add style to any kitchen. It’ll also see the most action, so choosing the right benchtop for your kitchen – and budget – is an important decision explains Bunnings Kitchen Designer Ben Carey.

Top of the content