How Exterior Colour Affects Home Temperatures

When summer rolls around, people rejoice at being able to go outdoors and enjoy the warm weather. There are so many fun activities to do outside. Many people avoid being inside due to heat being trapped inside the home. Unless they have air conditioning or a lot of fans, many find it too hot to stay inside. Is there a way to lessen the heat inside the home during the hot summer months? One surprising way to be able to do this is by choosing the right shade for the exterior of your home. Does it really make a difference? Yes, it does. The colour of your home outside has a huge impact on the amount of heat coming into your home.

Scientists have long proven that certain colours on materials have heat reflective or absorptive qualities. Did you know that darker colours like black on an outside wall absorbs more heat like around 80 percent from the sun’s rays? That heat can go to the walls and be released inside the home making the rooms hot. Light colours like white on the outside walls have the opposite effect. They actually reflect the sun’s rays and don’t hold most of the sun’s heat energy and have been measured to absorb only about 50 percent of the sun’s energy that’s beamed onto it. That means if you have light-coloured walls, you’ll have less heat coming into your home, translating into less air conditioning use and lower energy consumption.

If you don’t like having white for your outside walls for fear of it looking dirty, you can try other lighter shades of colours like light blue, light red, or light yellow – anything that will reflect light away from the home to prevent the energy from the sun’s rays to be absorbed through the walls of your house. If you need help selecting the perfect colour, Professional Painting Brisbane can give you advice on choosing the best quality exterior paints that will prevent the most heat absorption. The same principles of heat absorption are applicable for exterior vinyl siding. You are better off with lighter vinyl colours if you don’t want your home to absorb a lot of heat from the sun. 

The home building material also has a lot to do with the amount of heat absorbed in your home. Brick or wood homes usually are cooler inside during the summer than other homes with different building materials. They also keep a home warmer during the winter. Dense materials like brick absorb heat slowly during the day so it’s still cooler inside but when the nighttime comes, it releases the heat to the cooler air outside and also keeps the home warm during the cooler nights. If you’re building a home, consider building with materials like brick or materials with similar heat absorption and release properties like brick.

To add to wise colour selection and wise building material choice, other things you can do to lower your power bill is to plant trees around your home which will shade it. If trees are not an option, consider putting awnings or blinds for window cover to prevent harsh sunlight from coming in during the day. Doing those things will help keep your home at a good temperature while not increasing your power bill.

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