What NOAA's Springfield record shows
NOAA's engineering weather data includes a station at Springfield, elevation 1,270 feet, and the figures here are that station's.
The Springfield data gives a 1% summer design temperature of 92°F with a mean coincident wet-bulb temperature of 75°F, and a 99% winter design temperature of 9°F. NOAA also counts, in an average year at Springfield, about 578 hours with the wet-bulb temperature above 73°F and about 1,855 hours above 67°F.
How a careful remediation job is set up
Knowing what good work looks like makes bids easier to judge. A sound job usually includes:
- a written description of where the growth is, how far it reaches and which moisture source fed it;
- the work area closed off with plastic sheeting and a zippered door;
- a filtered air machine keeping the work area under negative pressure, so spores stay inside;
- porous materials such as drywall, insulation and carpet bagged inside the enclosure before they move through the house;
- framing and subfloor that stay in place cleaned and dried;
- drying equipment running until written moisture targets are met;
- a stated way of showing the work is finished before anything is rebuilt.
Mold is a water problem first
Every house carries mold spores; they drift in through doors and windows and settle with ordinary dust. Plenty of building materials can feed them, from the paper face of drywall to wood trim, carpet backing and cardboard. The ingredient a homeowner can control is water. Growth takes hold where a material stays wet long enough, and it stalls when that material dries out.
So the order of a lasting job never changes. Someone finds the source of the moisture. The right trade stops it. The structure is dried, and moisture readings show it is dry. Only then is growth removed or cleaned. A crew that starts tearing out drywall before anyone can name the cause is skipping the step that decides whether the problem comes back.
Places water collects without much notice
When you or a remediation company go looking, start with the spots where leaks stay quiet:
- Under sinks and behind appliances. Supply lines, drain joints and dishwasher or refrigerator connections can drip for months into a cabinet floor.
- Toilets and the water heater. A failing wax ring or a weeping tank fitting soaks the subfloor first and the visible surface last.
- Roof edges and penetrations. Worn flashing at chimneys, vents and valleys lets rain into an attic or the top of a wall.
- Windows and doors. Cracked caulk and failed seals send water into the framing below the sill.
- The cooling system. A clogged condensate line can overflow its pan, and ductwork in an unconditioned attic or crawlspace can sweat.
- Bath and laundry rooms. An exhaust fan that is missing, too small or ducted into the attic leaves steam behind.
- Basements and crawlspaces. Gutters that spill near the foundation, grading that slopes toward the house and an uncovered dirt floor all add moisture below the living space.
Warning signs around the house
- an earthy, musty smell that returns soon after cleaning;
- spotting on ceilings, closet walls or window frames;
- paint that bubbles, or drywall that feels soft when pressed;
- baseboards or trim that swell or pull away;
- a stain on the ceiling below a bathroom or attic unit;
- water beading on cold pipes, ducts or glass.
None of these tells you how far growth runs behind a wall. Each one is a reason to trace the moisture and have the area opened and checked.
Looking without spreading it
If you pull back a carpet corner or open a panel to see what's there, wear gloves, eye protection and a well-fitting disposable respirator. Keep children and pets out of the room. Don't dry-brush visible growth or aim a fan at it, since moving air can carry spores into other rooms. Anyone with health concerns about mold should talk with their own doctor.
Questions for each remediation company
- What is causing the moisture, and who will fix it before cleanup begins?
- Who is writing up the extent of the growth, and is that a separate company?
- How will the work area be sealed, and how will air pressure be controlled?
- Which materials will be removed, and which can be cleaned and kept?
- What moisture readings will show the structure is dry, and will I get them in writing?
- Will your own employees do the work, or a subcontractor?
- What does the final report include?
A note on Springfield's water plants
Springfield's drinking water from McDaniel Lake is treated at City Utilities' Fulbright plant, and water from Fellows Lake at the Blackman plant. Fellows and McDaniel share a watershed, and together they hold about 11.5 billion gallons.
Coverage and permits
Ask every company for proof of liability coverage and workers' compensation, and keep copies. If the work involves cutting into walls, replacing framing or moving plumbing or wiring, ask the contractor which local permits the job needs and who will pull them. Call your own insurer early to learn what your policy says about mold and about the water damage behind it, and what records it wants.
Comparing scopes, not totals
Give each bidder the same written description of the problem, and ask each to price exactly that work: rooms, materials, containment, drying targets and the way completion will be shown. Two totals mean little until they cover the same scope. Keep every photo, report, receipt and letter in one folder from the first day.