
Crawl space services
Are you in need of crawl space services?
Keeping crawl space humidity below 60% is key to keeping your home healthy. Excessive moisture can lead to mildew, pests, and odors. Our crawl space services help tackle these issues with vapor barriers, insulation, dehumidifiers, and ventilation systems. This home service is perfect for anyone with a crawl space who wants to prevent damage and humidity, protect their home's longevity and value, and make pest control easier in the long run.
Types of crawl space services from Terminix
Your technician will assess your home to identify its unique needs. Based on this evaluation, we’ll create a customized plan tailored for your crawl space, which may include one or several of the following services:

Encapsulation
Our encapsulation service involves the installation of a high-density, reinforced liner that covers the entire ground area, walls, and support piers within your crawl space. Our crawl space encapsulation services:
- Limit moisture and the pest problems it causes
- Helps protect your home's structural integrity
- Helps remove humidity with a qualified dehumidifier under your home
- Includes a wireless sensor to monitor your crawl space’s humidity levels

Crawl space ventilation
Proper ventilation is another tool to help prevent moisture in your crawl space that can damage your home, attract pests, create odors, and more. Our ventilation system automatically opens and closes your vents according to the humidity. Our crawl space ventilation system can also help:
- Improves air circulation and reduces humidity
- Keeps your crawl space warmer in winter and cooler in summer
- Prevent conditions that attract pests

Vapor barrier
Vapor barriers are applied directly to the soil under your house to help reduce ambient moisture and lower the wood moisture content of your home's floor frame. Our vapor barrier service can help defend against mildew and fungi and the damage they can do to your home, including:
- Wood decay and rot
- Rusty, damaged pipes
- Deteriorating insulation
- Electrical issues
- The presence of pests

Rodent and wildlife exclusion
Our professional rodent and wildlife exclusion services, powered by Flexi Armour™, help seal and protect your home from unwanted critters. A clean crawl space is an essential first step to remove old odors and help ensure the new seals work properly to keep pests out. Exclusion services help protect your home by preventing:
- Future rodent and wildlife infestations
- Costly damage to wiring, plumbing, and insulation
- Odors and allergens from animal waste
- Contaminated indoor air
The Terminix Difference
Here’s what our customers have to say...
Frequently Asked Questions - Crawl Space Treatments
You should check your crawl space regularly to see if it needs servicing, especially if you notice problems like cracks, pooling water, or significant wear and tear. The frequency of your checks can vary based on the condition and the weather in your area.
The cost of crawl space moisture control can depend on several factors, such as the location and size of your home. During your inspection, our technicians will give you an estimate for the cost of the crawl space service for your home.
While it is possible to DIY crawl space vapor barriers, it is not the best solution. Our experts are trained to ensure that the vapor barrier is installed correctly and efficiently, helping provide maximum protection against moisture and its potentially damaging effects. In addition, improperly installed crawl space moisture barriers can lead to moisture build-up, mildew or fungi growth, and even structural damage over time. Taking the DIY approach can be more expensive in the long run if not done correctly.
At Terminix, we offer several solutions to effectively moisture-proof your crawlspace and combat mold growth and wood rot. Encapsulation seals your crawlspace with a high-quality vapor barrier that prevents moisture penetration. In addition, enhancing ventilation can help reduce moisture levels and improve air quality by circulating dry air throughout the space. Together, these services form a reliable defense against moisture.
Homeowners' insurance usually covers water damage caused by a sudden and accidental event, such as a burst plumbing pipe or an appliance leak. However, it does not typically cover damage from gradual issues like long-term seepage, chronic high humidity, or lack of maintenance. Policies can vary, so it’s always best to review your policy to see what is covered and what isn’t.
While the terms are often used interchangeably for crawl spaces, they have a technical difference. A moisture barrier primarily slows the movement of liquid water, whereas a vapor barrier is specifically designed to stop the movement of water vapor from the soil into the air above it.
Mold growth under a properly installed vapor barrier is unlikely, as the barrier is intended to separate the soil from the air. However, the risk increases if the barrier is installed over existing wet wood or debris, or if a persistent liquid leak causes water to pool underneath a loose section. In these cases, the barrier can trap the moisture, creating a perfect environment for mold to thrive.







