What should I do first when I see mold after a leak?
Stop the water if it is still coming in, avoid disturbing the growth, keep people and pets away from the area, and call a licensed Mold Assessment Consultant. Do not scrub, paint over or spray the growth yourself, because that can spread it.
Photograph the growth and the area around it before anything is touched. Write down when you first saw it and what had happened before, so the assessor has the history it needs.
Tell the water damage crew, if one is on site. The crew will record the growth in the job file, and it will not move forward in the area until the assessor has seen it.
Why does Texas require separate firms for mold?
Under TDLR's rules, one party may not both assess and remediate mold on the same project, except for a school district project. The separation keeps the assessment independent from the removal, so the person deciding the scope is not the one paid to carry it out.
The separation protects the homeowner. A single firm could find more mold than is there or call for more removal than the assessment supports, and there would be no one to check the decision.
The separate-firms page on this site explains how the rule applies in practice, and what to ask a firm before you hire it.
How do I check the assessor and the contractor?
Ask for each person's license number and the company's license number, then check each with the Texas Department of Licensing and Regulation. The company that does the removal must also carry commercial general liability insurance of at least one million dollars per occurrence, as TDLR requires.
Make sure the assessor and the contractor are different companies on your project, and that each holds the license for its part. Keep the names and numbers in writing, with the date you checked them.
A firm that cannot give you a license number, or that suggests one is not needed for the work, should be checked further before you go on. The license is what the Texas rules require, and it is the first thing to confirm.
Can mold come back after it has been removed?
It can, if the moisture source has not been stopped or the area was not dried to the readings. Removing mold does not fix a leak, and a surface that stays damp will grow mold again. The remediation and the drying need to be complete.
That is why the water source is checked first, and why the drying readings are kept after the work is finished. A post-remediation check, where the assessment calls for one, is carried out by the assessor, not by the contractor who did the removal.
Ask the assessor to tell you what to watch for after the work. A musty smell, a new stain or a damp patch are the usual signs that something has been missed.
What affects the cost of mold work?
The size and location of the growth, the number of materials to be removed, the amount of containment, and whether the building is a home, a shop or a school. The licensed assessor and contractor each give their own written price, which is explained before any work starts. This site publishes no figure.
Growth in one closet costs less to assess and remove than growth spread across several rooms and inside the structure. Access, containment and the number of samples also change the price.
The assessment and the remediation are quoted separately by two parties, so you can compare each quote on its own scope.