Why Do You Need Mold Testing? How To Write A Mold Report?

Helen Skeates
Helen Skeates
14 min read

Professionals can benefit more from learning how to produce a mold report than the general public, but everyone can benefit from knowing what to look for when reading a mold report. A good mold report should make it clear to the reader or user whether or not there is a mold infestation, how terrible it is, where it is, and what should be done to remove it.

Clients and laypersons may find it difficult to understand a report that is riddled with technical jargon. For more information on how to write a clear mold report, continue reading.

What is mold?

Mold is a type of fungus that prefers damp environments to grow. Mold spreads through the release of spores, which are minuscule particles as small as a single cell. Until they touch down on a surface, spores float through the air. Mold spores can be found both inside and outside of your home. Without a big industrial clean room filtration system, it would be very difficult to eliminate all mold spores from a home.

How To Write A Mold Report Easily: Basic 6-Question Guide - Krostrade

When mold spores settle on a wet surface, they produce mold. There is no need to worry about mold if you can keep the inside of your home dry. A mold-free home is one where spills and leaks are cleaned up immediately, ventilation in the kitchen and bathroom is correctly installed, and the roof, plumbing, and HVAC systems are properly repaired.

Mold can wreak havoc on the surface it is growing on, and it can exacerbate allergies or asthma symptoms if left unchecked.

When to inspect for mold

It’s a good thing that if you can see mold in your home, you have it. Seeing mold growing in the crevices and corners of your walls is a sure sign that it is spreading its spores and causing more damage to your property. Think about where mold can grow in your ducts or between your walls; you may not be able to notice it at first. It is also possible for it to establish colonies that are so small that they are invisible to the naked eye. There are a few scenarios in which you should be on the lookout for mold in your home.

  • Damage from water. Whether your basement was flooded, your roof leaked, or a busted pipe sprayed water all over your kitchen, you need to check for mold. All areas where water has been present for more than 24 to 48 hours are at risk of mold contamination.
  • Making a down payment on a new house. When purchasing a home, it’s impossible to tell what kind of water damage has occurred. There is only one way to find out if there is mold in your home: an inspection.
  • After a residence has been left unattended. Moisture can accumulate inside a property if it has been left unattended for a long period of time. If you live in a location with a lot of humidity, this can be an issue.
  • After the mold was removed. You should have frequent mold inspections if you have dealt with a mold problem and have gone through the often expensive and laborious steps of getting rid of it.
  • MOLD IS SEEN IN THE AREA! You should get a mold check done if you observe green, blue, black, or white material growing in your home. An outbreak could take place in multiple locations.

What To Include In A Mold Report

In most cases, a mold inspection report is generated during mold cleanup or when a client detects mold growth in the area. As a result, a mold report must be easy to comprehend and valuable to the client, as the findings may influence the course of action that needs to be taken.

The findings of an inspector and the implications for the customer should be clearly stated in a professional mold report. It is possible to include the data and measurements that were taken, but the requester will only be able to use the numbers.

The following questions should be answered in a mold report:

  • Is the building contaminated by mold, allergies, volatile organic compounds, or any other environmental issue?
  • If there is a problem, where is it, and how severe is it?
  • Whether or not there are any underlying health concerns, the results of the laboratory tests are important to consider.
  • In your opinion, what is the best method for eliminating the mold? How much work is required in terms of cleaning, demolishing, or remediation?
  • Is there anything that can be done to prevent the mold from returning?
  • Have you completed the cleaning and remediation process correctly and successfully?

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What should you watch out for in reading a report from a mold testing lab

Limitations of of Confusing Mold Test Reports Without Expert Site Inspection

Is the person who inspected and tested the site an expert? Mold testing results were delivered to one of our clients, as illustrated in the illustration.

Some nice graphs were included in this mold lab report, however it also contained a few errors.

  • a lack of a structural inspection
  • no evidence of leaks or mold in the building’s history
  • no complaints from customers about the building
  • There was no evaluation of the risk of mold.
  • Inconsistent and conflicting findings from the lab.
  • then…
  • No one had any idea how to proceed.

It’s laudable that researchers are making an effort to standardize the way mold levels in buildings are reported, in this case through the use of a “mold score”. As it stands, a “mold score” doesn’t tell us anything about the building conditions at the time the sampling was done, making it useless and unclear.

An specialist in the mold testing lab alone, with no knowledge of the building’s circumstances, test conditions, or the sensitivities of its occupants, may only make a limited interpretation of the results. A thousand-fold variation in the “mold score” can be made by waving a notebook at a surface or not waving it during mold sampling.

“No-Content” Mold Lab Reports

Another “no content” mold test report has been provided. What on earth does that digit even mean? Is it a high, low, harmful, or safe level of exposure? Is it at its maximum, or is it at its lowest level? Using a single count, a total of five mold species are identified. I don’t know what to make of it.

Mold Inspections by Untrained People

Mold inspection and testing report recorded on a Pest Control Service Agreement received by another of our clients.

No harmful mold was found in the report, and the findings were not made public. Pest control service agreement paperwork gave the client with a scribbled description of mold to be “treated” by demolition, sprays, and the usage of an air scrubber instead of an accurate description.

According to the expert, a termite treatment firm, mold was included in their definition of “pests in structures,” which was reasonable.

Inaccurate or Misleading Mold Inspection and Test Reports

What about reports that contain inaccuracies or misinformation? Defects of this type can be extremely dangerous, as the report should include information on the presence of toxic materials in the environment and in the samples taken. Even though the investigator or laboratory may be protected by too-broad cautions in a report, it could also end up wasting the client’s effort and money.

Particles discovered in the air, surface, vacuum, or other samples should be identified in a good mold test lab report. The laboratory should inform whether it cannot “specify” the genera.

An issue material may be present or growing someplace in the building as little as the presence of one or two harmful spores can sometimes be important. It is important to distinguish between what is clearly significant (by visual inspection or, if necessary, quantitative measurement if it was an air sample) and what was observed but not necessarily significant.

As an example, an unspecific mold test report would indicate that “Cladosporium sp.” was identified, which would indicate the presence of a common and well-known genus like Cladosporium.

Using an asterisked note to indicate that “* Some members of this genera are hazardous” is a way for a lab to protect itself from exposure to Cladosporium, which is one of the most frequent mold genera and has at least 40 or more members or subspecies.

In addition, while some species are more commonly found in and linked with outside air, others can be found in abundance indoors as well.

This distinction could be a hint as to the condition and quality of the building’s air. Is it permissible to undertake a costly cleanup effort without first determining the presence of a harmful species? I don’t know. To be fair, visual inspection may not always be able to determine species based on sample quality, condition, and content.

Lack of Repeatability of Mold Test Results Limits the Meaning of Some Mold Inspections and Tests

Most of the variance in mold test findings is attributable to a lack of systematic documenting of the conditions present in the structure at the time of testing. In as little as a minute or two, turning on or off a fan can drastically alter the concentration of airborne particles in a structure.

How did you go about gathering the information for your mold and indoor air quality investigation report? When it comes to determining the total level of fungal contamination in indoor air, mold cultures cannot be relied upon. There is a role for home test kits, settlement plates, spore samplers, and sterile swabs in the arsenal of instruments, but they cannot be used to characterize a whole structure.

How Much Is A Mold Inspection?

An inspection for mold might be pricey. In terms of cost, it depends on how much inspection and testing is done as well as other considerations.

Mold inspections might cost anything from $300 to $400 on the low end. Expect to pay anything from $700 to $900 if your property is more than 4,000 square feet.

Consider the fact that these rates only include an examination. As a result, skipping any tests that aren’t absolutely necessary can save you money.

What Should You Do If Your Report Showed A Mold Problem

Your landlord should be informed if there is a mold infestation in your home if you are a tenant. Before it becomes any worse, you can remove the fungi.

There are two options when it comes to mold removal: you may either hire a mold remediation expert or handle the cleanup yourself. Learn more about how to remove mold from concrete block walls by checking out this useful article.

Why do you need Mold Testing?

A leak or water infiltration can quickly lead to a mold problem, which is a typical occurrence. There are various health risks associated with mold, not to mention the fact that it can cause significant property damage. Mold development can give off a musty odor that leads some people to believe there is water damage even when there is none. Having mold testing and mold inspection done by a competent testing firm like AirMD is essential if you’ve recently had water damage or think that there is mold in your home.

Only mold testing and remediation professionals that meet AirMD’s high standards are considered for membership in our network. As a result of our network of independent environmental experts, AirMD has served thousands of residential, municipal, educational and commercial clients who have come to rely on us. In Fresno, California, as well as in many other locations across the country, the AirMD network offers mold testing and mold inspection services.

Who should have a Mold Remediation Protocol Written?

Any company or organization that plans to do work on a property where mold has been found, either visually or through the use of a licensed Mold Assessor.

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What is performed with a Mold Remediation Protocol?

An authorized representative of the property will meet with the claimant to review and discuss the current conditions that led to the claim.

If mold is present, air and direct samples can be taken for mold testing. Room/floor drawings can be made to indicate the areas of concern. A physical site inspection of the property in the area(s) of concern is required.

  • This type of air sampling provides an approximation of the amounts of airborne microbial (fungal) spores. At a minimum, a control sample is normally taken outside the building’s most frequently used entrance, and then one or more air samples are taken in the areas of concern within the facility. This can point to the need for cleaning of personal belongings and/or HVAC systems as part of an overall microbial remediation strategy when elevated spore concentrations are found in the air.
  • Samples taken directly from damaged materials are used to determine the kind and concentration of microbial spores present on such items. When air samples are conducted, the sampling results are utilized as a reference for determining the source of contamination.

Identifying visually and reviewing records are examples of non-scope items.

  • Building Materials with Asbestos in Them (ACM)
  • Paint that contains lead
  • Chemicals to Prevent Fires

At the moment, there are no federal requirements for this position. However, in some states, Mold Assessors and Mold Remediators must be licensed. You should use a person who:

  • Mold assessment and remediation courses totaling at least 24 hours have been completed by the candidate.
  • abides by one or more industry standards and norms.
  • A minimum of 8 CEUs (Continuing Education Units) must be obtained every two months.

As long as the individual is under the direct supervision or responsible charge of a person who has the required qualifications, they can help in the conduct of a Mold Remediation Protocol.

There is less danger of a conflict of interest because most site inspections are performed by private companies that are not affiliated with the remediation company.


Having a good understanding of how to write a mold report is essential because it will help you communicate your findings to the customer in a way that they can understand. In order to devise a strategy for dealing with the mold problem, the report’s recipient has to know whether or not one exists, where it is situated, and how serious it is.

Helen Skeates

Helen Skeates

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