Reasons for ventilation in the home and DIY projects about how to fit and maintain ventilation products

This page includes links to all of our Ventilation DIY how to projects. Browse through the below list and click on your chosen link to view the project information.

Available DIY How To Projects

This section covers a wide range of ventilation related DIY Projects. Find out how to fit and maintain air bricks and fans. Understand what ventilation is needed in kitchens, toilets and bathrooms.

Extractor fans must be fitted in all bathrooms with ducts leading to outside

Extractor fans must be fitted in all bathrooms with ducts leading to outside

Home ventilation is important for a number of very reasons. When completing a project either yourself or if you get someone else to do it for you should consider ventilation.

4 reasons why ventilation is so important

  1. Removing harmful gases: combustion appliances such as stoves and fires produce potentially deadly gases that can kill you if they cannot be removed and repaired with clean, oxygen rich air
  2. Condensation is dangerous: Ventilation helps to remove the saturated air and replace it with dry air. This is important because the excess moisture in the air can condense and lead to mould growth which can threaten health, it can impair insulation and also cause structural damage
  3. Extra Costs: higher humidity can cause cooling equipment like air conditioning to work harder and therefore making the cooling system more expensive to run
  4. Unpleasant odours: Ventilation helps to remove unpleasant smells that can be present in bathrooms and kitchens

The basic types of ventilation for your home:

Broadly, there are 3 types of ventilation that are can be used in homes and they are as follows:

Grill flaps stop insects and birds getting into ventilation ducts

Grill flaps stop insects and birds getting into ventilation ducts

  1. Natural Ventilation: This is the uncontrolled movement of air in and out of the home through windows, doors and air bricks. It also includes cracks and all the unwanted movement of air in and out of your home. Clean air from outside naturally replaces the stale air from inside.
  2. Local or Spot Ventilation: This is the controlled movement of air in specific locations. For example extractor fans are commonly used in bathrooms to remove moisture or in Kitchens they are used to remove odours and potentially harmful gasses. This form of ventilation will be used in conjunction with natural ventilation. This section has advice and information about fitting timed fans and ducting to install spot ventilation
  3. Whole house ventilation: This is where controlled ventilation is provided throughout the whole house buy one or more fans. They can be one of three types:
    • Exhaust: This simply extracts air from your home which is replaced with air leaks from the building
    • Supply: This drives air into the building which allows the stale air to exit through crack and air leaks in the natural fabric of the building.
    • Balanced systems: These are systems which control the intake and exhaust air. They are typically only found in very modern homes that are airtight enough to control the air flow in and out. For further information see the project on ventilation and mechanical heat recovery.

The dangers of Carbon Monoxide

Carbon Monoxide (CO) is deadly. It is a colourless, odourless gas that is created when natural gas and even wood is burnt. It is heavier that air and therefore can collect in a home, potentially reaching deadly levels.

The good news it that Carbon Monoxide detector are very cheap and easy to install. They are of a similar size to a smoke detector and will alert you when there is a build of CO2. They should be fitted in all rooms particularly bedrooms where there is a combustion device.

Ventilation while carrying out DIY Projects

There are real dangers to not having sufficient ventilation in your home, but also don’t forget to ventilate while you are carrying out your DIY project; some products that you will be working with might have harmful vapours. Always read the label if you are unsure or are concerned.

This section explains the dangers of not ventilating your home sufficiently and there are a range of projects to that you can fit ventilating products.