Mold inspection in Dundalk, Maryland
Most mould in Dundalk homes is found by smell before it is found by sight, because the majority of it grows where nobody is looking.
Why Dundalk housing holds moisture
The neighbourhoods went up in waves through the 1920s and again during the war, largely as rowhouses and small detached homes with full basements. Galvanized supply lines that were never replaced are now well past the age at which they begin to fail from the inside. The area sits low against Bear Creek and the Patapsco, so storm surge is a real event here rather than a theoretical one, and the storm drainage was designed for a neighbourhood with far less pavement than it has today.
The moisture matters more than the species
The EPA does not recommend routine sampling to identify what is growing, because the recommended action does not change based on the answer: remove the growth, and fix the water feeding it. An inspection that maps moisture is generally more useful than a test that names a species.
Where a lab report does earn its cost is when you need documentation rather than information — a sale, a landlord dispute, or a claim where somebody else will read the file.
Where it hides in Baltimore County homes
- Behind panelling in a basement finished decades after the house was built
- Under carpet laid directly over a concrete slab floor
- Inside the wall behind a laundry connection
- Above a ceiling below a second-floor bathroom
- In the joist bay a central air condensate line runs through
- In the shared basement of a two- or three-family house, which nobody inspects
It usually starts with water
A basement that took water and was dried with a couple of fans, a supply line that seeped behind a wall for a season, a foundation that gets wet a few times a year and dries slowly — each leaves material damp out of sight.