Bridgeport/Sikorsky: NOAA's wet-bulb counts
NOAA's tally for Bridgeport/Sikorsky, about 18 miles southwest of New Haven, comes, in an average year, to about 305 hours with the wet-bulb temperature above 73°F and about 1,261 hours above 67°F. Those hours were counted at the Bridgeport/Sikorsky station.
New Haven by the numbers
Census QuickFacts lists New Haven's population estimate for July 1, 2025 (V2025) at 138,774. The population counted in the Census on April 1, 2020 was 134,023, according to the same source, and QuickFacts gives the city's land area in square miles, 2020, as 18.69.
Is the stain the problem, or a sign of one?
A sign. Dark speckling on drywall or a closet ceiling marks the place where moisture has stayed long enough for growth to take hold. Spores can ride into a building on clothes, pets and open-window air, and they can sit on paper, wood, fabric and dust without doing much until something keeps those materials wet. The useful question, then, is not "what kills this?" but "where is the water getting in, and since when?"
Can I just scrub it off?
Wiping a surface leaves the source untouched, and dry-brushing or sanding can send spores into the air of rooms that were clean. Growth on a painted wall may also be the visible edge of a larger patch on the back of the drywall. Before anyone cleans, ask who will trace the moisture, which trade will repair it, and how the materials will be measured as dry.
Where should I look for the water?
Think in systems rather than rooms:
- Supply and drain plumbing. Shutoff valves, braided supply hoses, trap joints, toilet seals, tub and shower pans, the dishwasher hose and any ice maker line can each leak slowly into a cabinet or subfloor.
- The roof and its openings. Flashing at chimneys, plumbing vents, skylights and valleys can let rain into an attic or the top of a wall.
- Siding, windows and doors. Gaps in caulk, cracked sills and missing flashing can steer water into the framing below an opening.
- Heating and cooling. A blocked condensate line can spill its pan, and ducts in an attic or crawlspace can sweat.
- Exhaust air. A bath fan that is missing, undersized or ducted into the attic, or a dryer that vents indoors, leaves damp air behind.
- The ground around the house. Gutters that spill beside the foundation and soil that slopes toward it can push water into a basement or crawlspace.
- Indoor humidity. Cold surfaces such as closet walls on an outside wall, window glass and cold-water pipes can collect condensation.
Who should size up the job?
Ask whether the person who writes the assessment works for the company that will do the removal. A separate written assessment, from someone whose mold experience you can ask about, gives each bidder one target and gives you a yardstick for the finished work. If one firm does both, ask how it keeps the scope tied to what it found rather than to the size of the contract.
What should a proposal say?
Ask each company for a written plan that covers:
- where the growth is, how far it reaches and the moisture source behind it;
- how the work zone will be sealed off, and where the entry will be;
- how air in that zone will be filtered and held at negative pressure;
- which porous materials come out, and how they are bagged before leaving the zone;
- what happens to framing and subfloor that stay;
- the moisture target, the meter used and the schedule of readings;
- what you will be shown before any wall is closed.
What can I safely do before help arrives?
If you open a panel or pull back a rug to look, wear gloves, eye protection and a well-fitting disposable respirator, and keep children and pets in another part of the house. Don't sweep or brush dry growth, and point fans away from it. Anyone with health concerns should speak with their own doctor.
What should I ask each company?
- Where do you believe the moisture is coming from, and who will stop it?
- Is the assessment yours, or someone else's?
- What state license or registration, if any, covers this work, and what is the number?
- Who will be on site: your employees or a subcontractor?
- May I see proof of liability coverage and workers' compensation?
- What moisture number counts as dry, and will the readings come to me in writing?
- What paperwork will I get at the end?
Do I need a permit, and what about insurance?
Mold removal can turn into carpentry, plumbing or electrical work once a wall is open. Ask which local permits the work would need, and whose name goes on them. For coverage, call your insurer early. Ask what the policy says about mold and the water damage that led to it, what photos and records it wants, and whether an adjuster should see the damage before anything is removed.
How do I compare bids?
Hand every company the same written assessment and ask each to price that scope and nothing else. Line the bids up item by item: containment, materials removed, cleaning, drying target, proof of completion. A total only means something once you know what it covers. Keep photos, notes, bids, readings and receipts together from the first day.