Allergy Symptoms That Only Happen at Home

Someone in the house is congested, headachy or wheezy at home, improves within a day or two away, and declines again within hours of getting back. That pattern is the most useful piece of information anyone brings us, and it is worth taking seriously without over-reading it.

We are not clinicians and nothing here is medical advice. What we can do is measure the building.

Why the pattern is worth measuring

Responses to mold exposure vary enormously between people. Two people in the same house can have very different experiences, and one person reacting while nobody else does is common rather than suspicious. That variability is exactly why a symptom account on its own cannot tell you whether a building has a problem, and why measurement is the way through.

What a building test can establish is whether indoor spore concentrations and the mix of genera differ from outdoor air in a way that indicates an indoor source. It cannot establish that mold is causing anyone's symptoms. Those are different claims and anyone blurring them is selling something.

The Coeur d'Alene versions of this

Seasonal and part-time properties. A house closed for months, then reopened, is a different building than an occupied one. Surfaces have drifted toward ground temperature, nothing has been ventilated, and a small problem has had an uninterrupted run. People who arrive for a summer and feel unwell for the first two weeks are often describing a building that needs to be aired out rather than remediated.

Daylight basements used as bedrooms. On the slope lots common here, the lowest level frequently has a bedroom or a guest suite against the uphill wall. That is the coldest, least ventilated part of the house, backed by soil at full height. If the person with symptoms sleeps down there and the people upstairs are fine, that is a strong location signal.

Forced-air distribution. If the symptoms track with the heating season, the duct system is a candidate, because it moves air from wherever the air handler draws it to every room on purpose. See musty smell when the furnace runs.

What we measure, and where

The sampling plan follows the pattern rather than a template:

• Air samples in the room where the person spends the most time, typically a bedroom, rather than in the middle of the living room
• An outdoor control taken the same day, because indoor numbers are meaningless without it
• A second indoor location for comparison, usually a room where nobody reports symptoms
• Moisture readings anywhere the building could be feeding it: crawl space, uphill basement wall, under windows, around plumbing
• Surface sampling of anything visible

Sampling the room that matters is the part that gets skipped most often, and it is the part that makes the result usable.

What a normal result means

It happens, and it is worth saying plainly what it does and does not mean. A result in line with outdoor air means the building is not showing an indoor mold source at the time and place sampled. It does not mean nothing is wrong, and it does not mean the symptoms are imagined.

A normal mold result narrows the field, which has value even when it is not the answer you expected.

When to call

Call when the pattern is consistent and tied to the building, when the affected person sleeps in a basement or a room with a known damp history, when the building has been closed and reopened, or when a physician has raised environmental exposure and you need something measured rather than guessed.

Pricing

A standard inspection is $425, covering the visit, a moisture and visual survey, one indoor air sample, an outdoor control taken the same day and accredited lab analysis, with lab fees in the price. Coeur d’Alene is about forty minutes from our base in Spokane Valley and there is no travel charge for Kootenai County.

Why an independent tester

We test and never remediate, take no referral fees from removal companies and keep no preferred contractor list. Idaho licenses neither mold assessment nor mold remediation, so one company may legally do both, and many here do. That makes independence a choice rather than a rule, and worth asking about. See Idaho mold testing rules and why we do not remediate.

Frequently asked questions

Can a mold test tell me if mold is making me sick? No, and anyone saying otherwise is overstating what the measurement does. A building test establishes whether indoor spore concentrations and the mix of genera differ from outdoor air in a way that indicates an indoor source. Connecting that to a person's symptoms is a clinical question for a physician, not a sampling question.

Everyone else in the house is fine. Does that mean it is not the house? Not at all. Responses to mold exposure vary a great deal between people, and one person reacting while others do not is common. It does make location worth paying attention to: if the affected person sleeps somewhere the others do not, that room is where the samples should be taken.

We only use the house part of the year. Should we test before we arrive? Open it, warm it and ventilate it hard for several days first. A closed building produces results that describe the closure rather than a real ongoing problem. If symptoms persist after the place has been properly aired out and brought up to temperature, that is when a test tells you something.

What if the test comes back normal? It narrows the field, which is worth something. Other building causes produce similar patterns: dust mites, combustion byproducts from an unvented appliance, VOCs from new finishes or furnishings. Radon is also worth knowing about here because this region sits in a high-radon zone, though it causes no symptoms at all.