Lack of proper air ventilation throughout the home can lead to more than a stuffy room – it can eventually result in a damp or mouldy home. And people who live in these homes are 40% more likely to get asthma, which can have lifelong health consequences. A home renovation is a good opportunity to create a proper indoor environment with plenty of fresh air, which can also help prevent minor symptoms like irritated eyes, headaches, fatigue and allergies.