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How to Tell If You Need to Replace Your Crawl Space Insulation
June 24, 2022 at 5:00 AM
Crawl space insulation that has just been replaced.

The crawl space is one area of the home that is often neglected. Whether you use this room for extra storage or you haven’t touched it in years, a poorly insulated crawl space can be detrimental to your property. It is, however, difficult for the average homeowner to recognize the signs of a poorly insulated crawl space.

Our team at St. Louis Insulation is here to support your needs by combining high quality materials, prompt service, and excellent workmanship. Continue reading to learn about a few signs that indicate you may need to call a home insulation contractor for assistance.

Air infiltration

Air infiltration occurs when air from the outdoors makes its way inside a building. This often happens due to a lack of insulation in the crawl space. Contractors frequently disregard this part of the home while insulating a new residential property. This can lead to many consequences including a drastic increase in utility bills during both the hot and cold seasons, along with low air quality throughout your home. An example of this is during the summer months when allergens are floating around outside, causing extreme discomfort for many. If you have identified signs of air infiltration in your home, call a professional to inspect your crawl space, and find out if there are openings where the air from outside may be coming through.

Pest infestations

In extreme cases, the sealant around a crawl space may contain gaps that are large enough for animals to creep into your home. More commonly however, a poorly insulated crawl space poses a major risk of insect infestation. Without a strong barrier, it is easy for these pests to come in from outside and eat away at structural materials such as wooden beams. Infestations can be extremely disruptive and expensive to resolve. If you notice signs of an infestation such as animal droppings in your crawl space, the first step is of course, to hire an exterminator. However, for a more long-term solution, it is crucial to follow this up with a crawl space insulation service.


One of the major consequences of introducing outside air into your home is that it can cause excess moisture to circulate, leading to problems such as mold and mildew. If these problems persist, they could be dangerous to your health, develop an odor, and seriously impact your living conditions. If you notice moisture in your home and are not sure of the cause, you may want to check your crawl space for gaps in the sealed edges. This is one of the most common causes of moisture inside the home, and can easily be remedied with crawl space insulation.

Lack of temperature control

If your space does not seem to be heating up or cooling down according to the temperature you set your thermostat to, this is another sign that you may have a gap in your current insulation where warm and cool air is escaping. If this is the case, we recommend having an inspection done by a professional and finding out if your crawl space is the culprit. A crawl space insulation service will not only help you maintain a comfortable temperature inside your home throughout the year, but it can also save you money on utility bills by taking the burden off of your HVAC system.

If you have noticed any of these signs, your best course of action is to contact a contractor for an immediate crawl space insulation service. If you are in the St. Louis area, contact our team at St. Louis Insulation today to request an estimate on our top-rated services.