How to Insulate Basement Walls?

basement walls

When considering insulating your house, basement insulation is probably the last thing to cross your mind. You perhaps believe that it is much more necessary to take care of your internal walls and floors than deal with your basement space. That is where you are wrong. 

Insulating your basement can not only turn your basement into a multifunctional space to be utilized for more than only storing things. It will also improvise the overall insulation of your house. How? Not many homeowners know that up to 35% of heat can be lost through a poorly insulated basement, and therefore it should not be neglected. However, the question remains: “How to insulate my basement?”

Basement insulation techniques

There are three popular ways of insulating your basement. It is essential to know that these methods do not usually exclude each other but can be combined if you have enough time and funds. The first option is insulating your basement walls, which can be insulated externally or internally. Another option is insulating the ceiling.

Insulating basement walls

Internal wall insulation is probably a more manageable task that can be performed regardless of outside weather conditions since it is done inside. It will mainly keep the warm air in and cold air out, and the other way around, increasing the overall thermal insulation of your basement. It will also contribute to your house’s acoustic insulation, keeping your home well protected from outdoor noise. 

However, know that if you opt for this insulation method, you must first deal with moisture leak issues in your basement before insulation and ensure that your plumbing and wiring are adequately protected. When choosing the proper insulation material, the most commonly used is rigid insulation. In this, the boards are tightly glued on the wall and covered with plaster. 

External wall basement insulation is a pretty challenging task, and therefore best performed by experts. It includes the use of some insulation material like PIR boards or spray foam. This insulation method will also enable you to add a decorative finish and make your house more appealing. Furthermore, unlike interior wall insulation, it will not reduce your interior space and prolong your basement wall life by protecting the brickwork.

Note: Most people also like to install Fire Extinguisher in Toronto in their basement to save it from fire hazards. 


Another great way of basement insulation is ceiling insulation. Ceiling insulation is an efficient way to protect the upper floors of your home since heat will not be able to travel down through the basement ceiling. If you decide to insulate your basement ceiling, always ensure to seal all the cracks and gaps (especially those around pipes and wires). If not, cold air will find its way up to the rest of your home from your basement, thus affecting the temperature and thermal performance. Insulation materials best for this insulation are spray foam.  Now that you know how to insulate basement walls in Ontario or your region give your nearby insulation contractor a call and get it done today!

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