How deep should you install a French drain?
It varies by location. In Virginia and surrounding areas, a French drain is usually installed between 8 inches to 1 foot deep for a crawl space.
Who installs a French drain?
Many professional landscapers and foundation specialists can install a French drain. Obviously, their reputation is likely going to affect the quality of the French drain. JES installs a crawl space perimeter drainage system called CrawlDrain™, our version of a French drain with an improved design.
Why is it called a French drain?
Interestingly, French drains aren’t actually from France. They are named after Henry French, a judge and farmer that lived in Massachusetts in the 19th century, who first wrote about them in 1859 and called them “cellar drains.”
How thick should a crawl space vapor barrier be?
A vapor barrier’s job is to seal out moisture, so making sure it’s thick enough to do just that is essential. Big box store liners are typically 6-mil thick. These liners aren’t able to handle the area’s conditions and often rip before installation is even completed. We recommend a 20-mil, zero perm liner. Our liner […]
Is a vapor barrier necessary in a crawl space?
Yes. If you want to protect your family’s health from mold and dust spores and the structural integrity of your home, investing in a vapor barrier in your crawl space is essential.
How is a vapor barrier secured in a crawl space?
Securing the vapor barrier is one of the most important installation steps. If your vapor barrier isn’t properly secured, meaning that gaps are left unsealed, outside air will continue to flow into the crawl space, making the system nearly pointless. Creating a virtually airtight seal is the only way to experience the benefits of a […]
What is the ideal humidity level in a crawl space?
The ideal humidity level in both your crawl space and the rest of your home is 50%-55%. Anything below 50% creates dangerously dry air, but when it’s above 55%, mold can grow easily and spread quickly.
How can I lower humidity in my crawl space?
Crawl space humidity can be lowered by controlling water intrusion, sealing exposed ground, improving drainage, and using a properly sized dehumidifier. JES Foundation Repair addresses crawl space humidity with encapsulation solutions, including interior drainage, sump pumps, vapor barriers, dehumidifiers, and insulation panels.
How can you test humidity in a crawl space?
You can test crawl space humidity with a hygrometer, which measures the amount of moisture in the air. If humidity levels stay high or the crawl space shows signs of moisture, JES Foundation Repair can inspect the area and recommend solutions to help control water and humidity.
How to cover crawl space vents?
Professionals will seal off the vents with sturdy foam insulation blocks, as well as place vent covers on the home’s exterior for aesthetic purposes upon your request.
