Basement Insulation Best Practices: Things to Consider

Traditionally, basements are mouldy, damp, smelly, and just downright uncomfortable places. More often than not, they’re not even particularly well-suited to storage, let alone making a living space out of it. Even so, the latest developments and our understanding of building science have come a long way, and most basements, new and old, can be brought up to a standard that will not only make your home safer for your loved one but also save your money in the long run.


Why Are Basements Damp and Mouldy?

Some basements do, in fact, leak and need to be dealt with before proceeding with the insulation procedure, but more often than not, the moisture that forms on the interior walls is actually condensation caused by the temperature differential between the cold walls and the warm air in the house. When the warm air comes in contact with the cold room, it condenses into water, similarly to a cold drink on a hot summer day. When this happens, it’s clear that the walls don’t receive sufficient air movement to complete dry, causing perfect breeding of mould.

However, converting your old basement into habitable space can improve the value of your home, but it won’t be much use if you can even store your innsamlingsbøsser in that place after your big remodelling and insulation project.

Sealing Air Leaks

Remove drafts in your home basement by sealing cracks with special spray foam and forseglingstape. According to experts from “Fine Homebuilding,’’ most air leaks take place between wooden joints and concrete walls of the foundation and connection in your sub-floor structure. This only adds up to your energy bills and causes many of the moisture problems typical of basements.

Weatherstrip Windows and Doors

A straightforward but efficient method to improve your basement’s insulation is to mount weatherstripping on your basement windows and doors. If you’re planning to save more energy, we suggest you use metal or vinyl weatherstripping for doors and windows to reduce the energy cost of your home.

Vinyl, metal weatherstripping and sikkerhetstape are all affordable and long-lasting materials suitable for insulation. While you may be tempted to use felt and open-cell foams because they’re cheaper, these materials can be very inefficient at blocking drafts.

Fibreglass & Hybrid Foam Insulation

Another method is the hybrid system of fibreglass and foam board. These materials are the least expensive, yet we believe they perform well in basements that don’t present visual signs of water infiltration. Note that this material should NOT be used if you have a history of water, even in small amounts.

This practice involves installing a foam board, and sealing it, as previously mentioned. Then a wall will be framed in front of the foam board, where the fibreglass insulation will be installed in the stud cavities.

Finally, it’s important to note that not all basements are acceptable for finished space. More often than not, homeowners try to “force” a finished basement when it’s not feasible due to water problems and flooding. All these practices assume you don’t have any serious water problems in your basement.




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