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Find Mold testing and remediation specialists in Frederick

Avatar for SIS Mold & Home Inspections

SIS Mold & Home Inspections

5.00(
2
)
Approved Pro

SIS Mold & Home Inspections

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

We are a small, veteran-owned local business, your safety is our priority. We inspect and test for mold and radon. SIS only performs testing and inspections, not remediation. We have no conflict of interest. For mold testing and inspections, you will receive a report that is clear and easy to understand with lab results interpreted. The mold inspector has done thousands of inspections and tests in the Delaware valley and keeps current with mold education. For radon testing, SIS uses Continuous Radon Monitors (CRM's) to perform short term tests. We provide professional test results and reports. PA state license # 3589 and nationally certified (NRPP).

"Bob from SIS is a straight shooter, provides options, clear explanations and associated costs on the necessary steps to remediate the problem. Good communication, timely and professional. Pleasantly surprised with my experience with SIS and the contractor they recommended to do the work. Easy 5-star rating, not too common these days."

Dennis H on February 2024

We are a small, veteran-owned local business, your safety is our priority. We inspect and test for mold and radon. SIS only performs testing and inspections, not remediation. We have no conflict of interest. For mold testing and inspections, you will receive a report that is clear and easy to understand with lab results interpreted. The mold inspector has done thousands of inspections and tests in the Delaware valley and keeps current with mold education. For radon testing, SIS uses Continuous Radon Monitors (CRM's) to perform short term tests. We provide professional test results and reports. PA state license # 3589 and nationally certified (NRPP).

"Bob from SIS is a straight shooter, provides options, clear explanations and associated costs on the necessary steps to remediate the problem. Good communication, timely and professional. Pleasantly surprised with my experience with SIS and the contractor they recommended to do the work. Easy 5-star rating, not too common these days."

Dennis H on February 2024


Avatar for Mold Test Company PA

Mold Test Company PA

4.18(
110
)
Approved Pro

Mold Test Company PA

4.18(
110
)
Approved Pro
Customers say: Quick response
269 local quotes requested
17 years of experience

When you have mold, making the correct decisions right away is critical. Whether it is mold in your home, school, place of work, or apartment there are many factors to consider. Are you going to be involved in a mold lawsuit? Will you be seeking property damages? Is anyone sick from mold exposure? Will you be seeking medical damages? Will you need expert witnesses? If so, what kind? Do you just want to test to be sure your environment is safe? Do you need post mold remediation testing to ensure a good job was done? These and other factors are questions which need to be answered before any environmental testing starts. It is important to know what your goals are and why your testing. Different goals require different environmental tests, i.e. medical damages and property damages require different environmental tests to prove your case in court. Tests that a common, or inexperienced, mold inspector would not typically use or know to use.

"The mold testing is fine. The mold remediation company is very sketchy. Just buy some air purifiers."

Dan T on June 2024

When you have mold, making the correct decisions right away is critical. Whether it is mold in your home, school, place of work, or apartment there are many factors to consider. Are you going to be involved in a mold lawsuit? Will you be seeking property damages? Is anyone sick from mold exposure? Will you be seeking medical damages? Will you need expert witnesses? If so, what kind? Do you just want to test to be sure your environment is safe? Do you need post mold remediation testing to ensure a good job was done? These and other factors are questions which need to be answered before any environmental testing starts. It is important to know what your goals are and why your testing. Different goals require different environmental tests, i.e. medical damages and property damages require different environmental tests to prove your case in court. Tests that a common, or inexperienced, mold inspector would not typically use or know to use.

"The mold testing is fine. The mold remediation company is very sketchy. Just buy some air purifiers."

Dan T on June 2024


Avatar for The Radon Bros LLC

The Radon Bros LLC

4.88(
12
)
Approved Pro

The Radon Bros LLC

4.88(
12
)
Approved Pro
Super Service Award
Customers say: Quick response
300 local quotes requested
1 years of experience

The Radon Bros LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Brian from The Radon Bros LLC was fantastic, did a great job, provided explanations about his equipment, what he was doing and what the process entailed."

Megan C on October 2025

The Radon Bros LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Brian from The Radon Bros LLC was fantastic, did a great job, provided explanations about his equipment, what he was doing and what the process entailed."

Megan C on October 2025


Avatar for The Radon Bros

The Radon Bros

5.00(
5
)
Approved Pro

The Radon Bros

5.00(
5
)
Approved Pro
Super Service Award
Customers say: Terrific value
212 local quotes requested
7 years of experience

The Radon Bros is a certified provider specializing in radon testing, mitigation, and system repairs for homes, businesses, and schools across Pennsylvania, Delaware, and Maryland. They also offer mold testing and comprehensive indoor air quality assessments to ensure safer living and working environments. The company provides tailored solutions, including radon system installation and expert consultations for contractors, with a commitment to safety, health, and air quality.

"They were really helpful and polite they explained the job from start to finish and they explian how radon is harmful."

David R on November 2025

The Radon Bros is a certified provider specializing in radon testing, mitigation, and system repairs for homes, businesses, and schools across Pennsylvania, Delaware, and Maryland. They also offer mold testing and comprehensive indoor air quality assessments to ensure safer living and working environments. The company provides tailored solutions, including radon system installation and expert consultations for contractors, with a commitment to safety, health, and air quality.

"They were really helpful and polite they explained the job from start to finish and they explian how radon is harmful."

David R on November 2025


Avatar for Atlas Environmental Inspections

Atlas Environmental Inspections

4.94(
78
)
Approved Pro

Atlas Environmental Inspections

4.94(
78
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
39 local quotes requested

ATLAS Environmental Inspections is a fully licensed and fully insured environmental inspection firm offering experienced and professional mold and asbestos testing services to residential, commercial, and industrial clients in the greater Philadelphia, Chester, Montgomery, Bucks, and Delaware counties. ATLAS Environmental Inspections continually strives to provide professional, courteous, and accurate environmental inspection services with an emphasis on total customer satisfaction. Atlas Environmental Inspections believes in partnering with its clients and attempts to simplify highly technical industrial or chemical jargon into a more understandable context. Most of our clients have never been exposed to an environmental hazard and consequently do not know where to turn for testing or what steps to take in addressing these concerns.

"I had a bad experience with a different company, and so, I was a little skeptical and wary when I started working with Jason. He was very patient with me, showed me all his credentials, took the time to explain what he would be doing and why, and otherwise showed me that he runs a competent and professional outfit. The type of test they took satisfied my insurance company and they even offered to let me pay after the test was done. In short, I am 100% satisfied with Jason and Atlas Environmental Inspections. It was great being able to work with such a great company after having had that previous bad experience."

Ronald M on September 2023

ATLAS Environmental Inspections is a fully licensed and fully insured environmental inspection firm offering experienced and professional mold and asbestos testing services to residential, commercial, and industrial clients in the greater Philadelphia, Chester, Montgomery, Bucks, and Delaware counties. ATLAS Environmental Inspections continually strives to provide professional, courteous, and accurate environmental inspection services with an emphasis on total customer satisfaction. Atlas Environmental Inspections believes in partnering with its clients and attempts to simplify highly technical industrial or chemical jargon into a more understandable context. Most of our clients have never been exposed to an environmental hazard and consequently do not know where to turn for testing or what steps to take in addressing these concerns.

"I had a bad experience with a different company, and so, I was a little skeptical and wary when I started working with Jason. He was very patient with me, showed me all his credentials, took the time to explain what he would be doing and why, and otherwise showed me that he runs a competent and professional outfit. The type of test they took satisfied my insurance company and they even offered to let me pay after the test was done. In short, I am 100% satisfied with Jason and Atlas Environmental Inspections. It was great being able to work with such a great company after having had that previous bad experience."

Ronald M on September 2023


Avatar for Oak Leaf Environmental

Oak Leaf Environmental

New on AngiNew on Angi
Approved Pro

Oak Leaf Environmental

New on AngiNew on Angi
Approved Pro
209 local quotes requested

If you're a property owner seeking peace of mind regarding mold, asbestos, lead, radon, or air quality issues, the skilled environmental team at Oak Leaf Environmental is here to assist you. We offer a comprehensive range of services designed to keep your home or business environment healthy, allowing you to focus on the well-being of everyone inside.

If you're a property owner seeking peace of mind regarding mold, asbestos, lead, radon, or air quality issues, the skilled environmental team at Oak Leaf Environmental is here to assist you. We offer a comprehensive range of services designed to keep your home or business environment healthy, allowing you to focus on the well-being of everyone inside.


Avatar for BOR of Montgomery County

BOR of Montgomery County

5.00(
1
)
Approved Pro

BOR of Montgomery County

5.00(
1
)
Approved Pro
111 local quotes requested
1 years of experience

At Best Option Restoration of Montgomery County, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of mold, water, and storms. Here’s what sets us apart: Mold Remediation: Our certified experts assess and isolate mold contamination, ensuring thorough removal and preventing further spore spread. We identify the root cause, devise effective solutions, and prioritize your safety. Water Removal and Storm Damage Restoration: When water wreaks havoc due to storms or other incidents, we’re here to help. Our 24/7 emergency response team swiftly tackles water extraction, drying, and structural repairs. Comprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup Choose Best Option Restoration of Montgomery County for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.

At Best Option Restoration of Montgomery County, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of mold, water, and storms. Here’s what sets us apart: Mold Remediation: Our certified experts assess and isolate mold contamination, ensuring thorough removal and preventing further spore spread. We identify the root cause, devise effective solutions, and prioritize your safety. Water Removal and Storm Damage Restoration: When water wreaks havoc due to storms or other incidents, we’re here to help. Our 24/7 emergency response team swiftly tackles water extraction, drying, and structural repairs. Comprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, basement flood cleanup Choose Best Option Restoration of Montgomery County for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property.


"Everything went great. From the estimate to scheduling to the work that was completed the job went smoothly."

Adam R on July 2025

ACI-Tech Inc. is a licensed and fully-certified provider of remediation services. Asbestos removal is not offered in New Jersey.

"Everything went great. From the estimate to scheduling to the work that was completed the job went smoothly."

Adam R on July 2025


Sleep Tite Mold and Odor Removal

4.33(
6
)

Sleep Tite Mold and Odor Removal

4.33(
6
)
Customers say: Terrific value
2 years of experience

We remove mold and odors and germs. Looking for top-notch mold remediation services in PA? Look no further! At Sleep Tile Mold and Odor Removal, we specialize in providing high-quality solutions for homeowners. We have the expertise and attention to detail. Contact us today for all mold and odor removal needs!

"We had some storage stuff in the barn that got moldy. After treatment the black mold was bleached and just brushed off. The barn was left smelling clean almost like a pool. I would definitely use this company again."

Jennifer J on July 2024

We remove mold and odors and germs. Looking for top-notch mold remediation services in PA? Look no further! At Sleep Tile Mold and Odor Removal, we specialize in providing high-quality solutions for homeowners. We have the expertise and attention to detail. Contact us today for all mold and odor removal needs!

"We had some storage stuff in the barn that got moldy. After treatment the black mold was bleached and just brushed off. The barn was left smelling clean almost like a pool. I would definitely use this company again."

Jennifer J on July 2024


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Mold Testing and Remediation questions, answered by experts

The symptoms of mold exposure for sensitive parties include a skin rash, runny nose, coughing, sore throat, burning eyes, and even more severe allergic reactions. If you notice signs of mold exposure, contact a medical professional right away.

If dresser drawers are damp or dirty, they could be transferring odors to your clothes. Make sure to only store clean, dry clothes in dresser drawers. Plan to thoroughly clean out the drawer interiors at least two times per year.

If you have a mold infestation that you can see—or one that’s inside the walls that you cannot see—you may notice respiratory issues. You may sneeze quite a bit or have itchy eyes. If you cannot explain these symptoms, which often resemble allergies, you may want to seek a local mold inspection.

If you're wondering about black stains on brick at your home, the answer is that you're not looking at efflorescence. While efflorescence can be darker when certain types of salt are involved, black staining is caused by carbon staining, pollution from vehicles, and chimney soot. Black stains can also be caused by organic materials like lichen, algae, or mold.

Pressure-treated wood offers some protection from the elements but doesn’t protect against mold. However, if you spot mold growing on pressure-treated wood, it doesn’t indicate rot or an interior fungal infection—the treatment process ensures that the mold stays on the exterior. Keep the wood dry, but if you spot some mold, remove it immediately and clean the area.

The Frederick, PA homeowners’ guide to mold testing and remediation services

From average costs to expert advice, get all the answers you need to get your job done.