A 2022 survey in the US on foundation types, indicates that 14% of the homes have crawl space. Several houses in the United States have crawl space because they’re cheaper than full-basements. It is quite similar to the basement but has ventilation, and provides access to plumbing, electrical wiring, and ductwork for HVAC systems. These spaces usually have a height of 1-3 feet tall or shorter.
If you are trying to figure out if your home has a crawl space, this blog is for you!
What is a Crawl Space?
A crawl space, as the name suggests, is a hollow space underneath a home where people need to crawl to get into it. It works as a buffer between your home and the soil underneath. However, unlike basements, it cannot be converted into a room or other functional space. But these are great if you want to hide pipes, HVAC equipment, electrical wires, etc.
Crawl spaces help with three things -
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Support the home structure.
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It keeps out the groundwater.
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Acts as a barrier against soil and water vapor.
Crawl space allows outside air to circulate beneath the house. Apart from this, there are two major reasons why some homes have a crawl space -
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Convenience - These spaces are best to install HVAC units, in addition to distributing water and sewer throughout the house.
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Cost-Effectiveness - A crawl space eliminates the need to move dirt to level a sloping lot.
Types of Crawl Spaces
There are two types of crawl spaces available -
Vented Crawl Space
Vented crawl space was considered the best because of the openings, also known as crawl space vent. Though these vents allow the flow of air in and out of the space, it also worked as an entryway for pests to come inside. Also, vented spaces are more prone to mold, mildew, pest infestation, etc.
Encapsulated Crawl Space
Encapsulated crawl spaces are also known as conditioned crawl spaces. They are beneficial in not letting pest or humidity inside, which keeps it dry and mold free. Insulation drainage, vapor barrier, a sump pump, and a crawl space dehumidifier can be added to store things inside and protect from damage from outside elements.
How to Know if Your Home Has a Crawl Space?
As crawl spaces sometimes can be mistaken to be a basement, it’s quite challenging for some to know if their home has a crawl space or a basement. Many use the terms interchangeably which makes it confusing to figure out what it is. So, let’s figure out the difference between the two.
Size of the Space
Basements are much larger than crawl spaces. The average height of a basement is about 8 feet, whereas crawl spaces measure around 3 feet. Thus leaving enough space to crawl inside on your knees and hands. As basements have more walking space, they are more functional. It can be turned into an additional room or a recreational area. However, crawlspaces are mostly used as storage.
No matter how small the basement is, they don't go below 3 feet. So if you have anything that matches the 3 feet criteria, you have a crawlspace in your home.
The Purpose of the Space
Basements can be used for all sorts of things, such as storing items. However, a crawl space is not made for such things. The primary function of a crawl space is to give you enough space to access wires and ductwork, HVAC systems, and other essential components.
But, that does not mean a home with no crawl space won’t have access to them. In such a case, you can get access to wires, HVAC systems, etc, via the basement. So, if you see wires and other electrical components in a small claustrophobic space - you have a crawl space in your home.
The Airtightness
Basements do not have ventilation, but crawl spaces do have them. Hence, when you step inside the basement, you’ll find it cold and moist. Crawl spaces don’t have a concrete slab as their flooring. They usually have dirt. However, a basement has a concrete slab, which cuts off the space above the ground.
They also have ventilation, like a small opening, which makes them susceptible to hot weather, cold, moisture, pests, etc. Hence, if you have a crawl space with no flooring, it is better to get it encapsulated. This makes the foundation more secure and safe from outside elements.
Are Crawl Spaces Good for Your Home?
Crawl spaces suffer from moisture-related issues because of their surroundings. The moisture in the space can lead to several issues, such as -
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Mold and mildew.
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Insects and dust mites.
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Decreased insulation R-values.
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Increase in heating and cooling bills.
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Rotten wood and structural damage.
But all these can be eliminated with the use of a humidifier or vapor barrier, installing and cleaning gutters and downspouts, proper grading of the home, waterproofing the interior and exterior of the home, etc. So, the answer depends on how well you maintain these spaces for optimal functioning. If you take proper precaution for crawl spaces - they are great. However, if you leave them to be and don’t put time or attention insulating or maintaining them - they can damage the house.
Conclusion
Not every home has a crawl space. But if you think there is one in your home, it can easily be identified by checking the size of the space, flooring, ventilation, etc. Also, this eliminates the confusion between a basement and a crawlspace. These are functional spaces and can hide pipes, ductwork, etc. - but not suitable for people with claustrophobia.
