Clear the way to the crawl space hatch before we come, so we can reach every corner under the floor.
A crawl space mold inspection in Falls Church covers the soil, the framing and the ducts under the floor, the part of the house few people see. In a house built before 1980, as 43.6 percent of Fairfax County's housing was (Census Bureau, 2020 to 2024), the crawl space may have had plumbers, electricians and HVAC installers working in it over the years, and any of those visits can leave the vapor barrier torn or pushed aside.
A musty smell in the rooms above is a common clue, because air moves up through the gaps around pipes and ducts. We go under the floor, measure what's wet and send samples to the lab when the readings leave a question open. Our mold inspection and testing page covers the other kinds of visit.
This page sits under our mold inspection & testing service.
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“Ron did a great job explaining everything. I am so excited about this process. Initially I was planning to use a mold remediation company for the whopping price tag of $25K. Enviro Pure is charging me $5K and I don't have to replace all my drywall, kitchen cabinets, carpet and furniture which the mold remediation company had instructed me to do. I'm very excited about this.”
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“Working with EnviroPure was excellent. They were professional, personal, and thorough They listened carefully to our needs and goals for optimal health of our home so that we can all start feeling better. I highly recommend them.”
“This review is long overdue. I discovered mold in a closet in a basement room this past fall. I reached out to several different services for quotes. Ron was very responsive and provided a fair quote. Working with him and his team was fantastic. Ron got my home onto his schedule quickly so that I could accommodate guests for the holidays. He also helped me resolve the cause of the mold, as opposed to just mitigating a problem that would return. He was not only incredibly professional, he was also kind. I wholeheartedly recommend EnviroPure to resolve any mold issue!”
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Tell us where the access is when you book: a hatch in a closet floor, a door in the foundation wall or a panel behind the stairs. Move stored boxes away from it, and if the outside door is behind shrubs, clear a path. Leave the crawl space itself as it is, so we see it the way it has been.
We look at the soil first: standing water, damp patches, and whether the vapor barrier covers all of it and is sealed at the walls. Standing water on top of a barrier has come from above it, often a downspout or a leak.
A tide line on the block or a crust of silt on the soil shows where water has stood after heavy rain, even when the crawl space is dry on the day we visit.
We take moisture readings in the wood and compare damp areas with dry ones:
Air-conditioned supply ducts run colder than the crawl space air in summer, so a bare or poorly sealed duct can drip onto the insulation and joists beneath it. We follow the ducts, the supply and drain lines, and any dryer vent that ends under the house instead of outdoors.
If you know where the dryer vent ends, tell us. Warm, wet air and lint from a dryer venting under the floor can feed growth on the joists around the outlet.
When the readings leave a question open, we take air samples in the crawl space, the living area and outdoors, plus tape samples from the framing. Counts higher below than upstairs, and higher upstairs than outdoors, suggest the crawl space is feeding the house.
Samples go to an accredited third-party lab with no affiliation to EnviroPure. Air and tape results usually come back in 2 to 3 business days.
The report gives the spore count per cubic meter and the genus of what was found, compared against outdoor and baseline samples. It is written in plain language with clear next steps, and it is yours to keep.
If you go ahead with treatment, the clearance samples go to the lab that read these, so both sets come from one source.
EnviroPure is a licensed provider of Pure Maintenance's patented VaPURE process.
This page covers one part of the job. The mold inspection & testing page covers the rest.
A crawl space isn't sealed from the house. Air moves up through gaps around pipes, wires and ducts, so a smell upstairs can start below.
A sealed crawl space can still take on water from a plumbing leak or a torn liner, so a smell or a stain is reason enough. Readings show whether it is staying dry.
We note how deep and where, read what we can reach, and put the water source first in our notes. A plumber or crawl space contractor deals with the water, and samples are more useful once it is gone.
Call or book online and we'll set up the first conversation.
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