Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Speonk, NY

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Speonk, NY?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Speonk

Global Restoration Services, Inc.

5.00(
20
)
Approved Pro

Global Restoration Services, Inc.

5.00(
20
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
Free onsite estimate

With years of experience serving Ronkonkoma and surroundings area, Global Restoration Services, Inc. is your solution for all your mold removal needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed!

"I can’t express my gratitude enough for what this company did for my mother. Having an electrical fire at her house was scary enough. They were there from the moment we needed them and guided me through the entire process and made me understand each step. CuzWith precise efficiency they started the process of the cleanup that day and finished the projects In two weeks time. They were very professional and had great communication and customer service. I highly recommend this company above all."

Danielle W on August 2024

With years of experience serving Ronkonkoma and surroundings area, Global Restoration Services, Inc. is your solution for all your mold removal needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed!

"I can’t express my gratitude enough for what this company did for my mother. Having an electrical fire at her house was scary enough. They were there from the moment we needed them and guided me through the entire process and made me understand each step. CuzWith precise efficiency they started the process of the cleanup that day and finished the projects In two weeks time. They were very professional and had great communication and customer service. I highly recommend this company above all."

Danielle W on August 2024


Avatar for Phase 1 Restoration Inc.

Phase 1 Restoration Inc.

4.79(
19
)
Approved Pro

Phase 1 Restoration Inc.

4.79(
19
)
Approved Pro
Customers say: Quick response
38 years of experience
Free onsite estimate

Phase 1 Restoration, Inc. possesses and utilizes the acumen to evaluate our client’s requirements and initiate a course of action necessary to achieve intended targets, incorporating the client’s schedule, budget, operational needs and future plans into consideration.

"Phase 1 did a fantastic job. They arrived on time and worked well to remove the asbestos from our basement."

Peter S on July 2025

Phase 1 Restoration, Inc. possesses and utilizes the acumen to evaluate our client’s requirements and initiate a course of action necessary to achieve intended targets, incorporating the client’s schedule, budget, operational needs and future plans into consideration.

"Phase 1 did a fantastic job. They arrived on time and worked well to remove the asbestos from our basement."

Peter S on July 2025


Avatar for Inspect This Home Inspections LLC

Inspect This Home Inspections LLC

4.99(
332
)

Inspect This Home Inspections LLC

4.99(
332
)
Customers say: Quick response
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers

US Army Veteran Owned and Operated. Inspect This Home Inspections LLC realizes that the purchase of a home is probably the largest and most exciting investment you will ever make. Don't let your dream house become a Night -Mare on Elm St. A home inspection will help you learn as much as you can about the property you are considering buying. Let us give you the tools to help you make a more informed decision as a buyer. Lou Rubino is a licensed home inspector provides fast and reliable Home Inspections and Pre-Construction Survey for builders in New York, NY and the local area . With a quick report turn around usually in two days or less for a house 2,000 sq ft and under. Call at 516-330-3870 to make your appointment

"Lou is a thorough, methodical, and detail oriented professional. Will recommend. Thank you!"

Alex V on August 2024

US Army Veteran Owned and Operated. Inspect This Home Inspections LLC realizes that the purchase of a home is probably the largest and most exciting investment you will ever make. Don't let your dream house become a Night -Mare on Elm St. A home inspection will help you learn as much as you can about the property you are considering buying. Let us give you the tools to help you make a more informed decision as a buyer. Lou Rubino is a licensed home inspector provides fast and reliable Home Inspections and Pre-Construction Survey for builders in New York, NY and the local area . With a quick report turn around usually in two days or less for a house 2,000 sq ft and under. Call at 516-330-3870 to make your appointment

"Lou is a thorough, methodical, and detail oriented professional. Will recommend. Thank you!"

Alex V on August 2024


Avatar for True View Home Inspections

True View Home Inspections

4.89(
136
)

True View Home Inspections

4.89(
136
)
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

You deserve to really know your future home. At True View Home Inspections, we believe in providing you with the opportunity to “Get to Know” the place where you will eat your meals, raise your family and spend the majority of your time. Buying a home is a huge investment; you can rely on us for our comprehensive, unbiased knowledge. True View provides you with the objective insight that you will not get anywhere else. Our clear, detailed inspection reports and professionalism, will give you the comfort you needed during the home buying process. The “True View” of your future property will protect your investment, your interests and your peace of mind. For the best view, call True View. Services include: Buyer's Inspection, Pre-Listing Inspection, New Construction Inspection, Termite Inspection, Radon Inspection, Mold Inspection, Asbestos Inspection.

"My wife and I are first time home buyers, and we are extremely happy we ended up using True View for our inspection. Evan Weiss was our inspector, and he was absolutely fantastic. He was over 20 minutes early and got us started ahead of time. He was unbelievably thorough, and for first time buyers, he made sure we understood every note that he made. He went out of his way to make sure we were good before moving on to other parts of the house. He also had great advice for general things to keep in mind for maintenance and other tips for first time home owners. If you're thinking about using True View, I suggest you pick up the phone and book them today. We're so happy that we did, and in particular, we're so happy Evan was our inspector."

David M on November 2019

You deserve to really know your future home. At True View Home Inspections, we believe in providing you with the opportunity to “Get to Know” the place where you will eat your meals, raise your family and spend the majority of your time. Buying a home is a huge investment; you can rely on us for our comprehensive, unbiased knowledge. True View provides you with the objective insight that you will not get anywhere else. Our clear, detailed inspection reports and professionalism, will give you the comfort you needed during the home buying process. The “True View” of your future property will protect your investment, your interests and your peace of mind. For the best view, call True View. Services include: Buyer's Inspection, Pre-Listing Inspection, New Construction Inspection, Termite Inspection, Radon Inspection, Mold Inspection, Asbestos Inspection.

"My wife and I are first time home buyers, and we are extremely happy we ended up using True View for our inspection. Evan Weiss was our inspector, and he was absolutely fantastic. He was over 20 minutes early and got us started ahead of time. He was unbelievably thorough, and for first time buyers, he made sure we understood every note that he made. He went out of his way to make sure we were good before moving on to other parts of the house. He also had great advice for general things to keep in mind for maintenance and other tips for first time home owners. If you're thinking about using True View, I suggest you pick up the phone and book them today. We're so happy that we did, and in particular, we're so happy Evan was our inspector."

David M on November 2019


Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018


Avatar for Apex Mold Specialists NY NJ CT

Apex Mold Specialists NY NJ CT

4.77(
230
)

Apex Mold Specialists NY NJ CT

4.77(
230
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

APEX Mold Specialists is a 20 year old business, specializing in Indoor Air Quality (IAQ) as it relates to mold and water damage issues! We address 'landlord-tenant' cases, residential, commercial and governmental buildings. We work closely with building management and the custodial staff to abate and prevent future mold issues from occurring. Please contact our office today to schedule your Estimate 800-217-6897

"Very quick availability for an appointment. Great punctuality and they were able to answer my questions. Professional."

Basia R on June 2024

APEX Mold Specialists is a 20 year old business, specializing in Indoor Air Quality (IAQ) as it relates to mold and water damage issues! We address 'landlord-tenant' cases, residential, commercial and governmental buildings. We work closely with building management and the custodial staff to abate and prevent future mold issues from occurring. Please contact our office today to schedule your Estimate 800-217-6897

"Very quick availability for an appointment. Great punctuality and they were able to answer my questions. Professional."

Basia R on June 2024


Avatar for RTK Environmental Group

RTK Environmental Group

4.80(
61
)

RTK Environmental Group

4.80(
61
)
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

RTK only performs environmental testing and not remediation or removal, therefore our results are accurate and unbiased since there is no conflict of interest. We provide mold testing and inspection, asbestos testing, indoor air quality testing, lead testing, soil testing, water testing, and environmental home inspections. We do not provide general whole house home inspections. We service all of Connecticut, southern New York and the Hudson Valley, Long Island, and northern New Jersey.

"I was pleased with the work Lidia Crespo did. She was very pleasant to deal with. She seemed knowledgeable. I was pleased with her work."

Florence C on September 2020

RTK only performs environmental testing and not remediation or removal, therefore our results are accurate and unbiased since there is no conflict of interest. We provide mold testing and inspection, asbestos testing, indoor air quality testing, lead testing, soil testing, water testing, and environmental home inspections. We do not provide general whole house home inspections. We service all of Connecticut, southern New York and the Hudson Valley, Long Island, and northern New Jersey.

"I was pleased with the work Lidia Crespo did. She was very pleasant to deal with. She seemed knowledgeable. I was pleased with her work."

Florence C on September 2020


Avatar for QualTech Corp

QualTech Corp

5.00(
21
)

QualTech Corp

5.00(
21
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

QualTech Corp. is a family owned business. We have been in business since 2005. We accept all major credit cards. Details about our business can be found on our website at www.QualTechNY.com. We install a free Humidex Ventilation system with all jobs greater than $ 8500. We provide a written 5 year warranty with all mold remediations. We can provide rebuilding also after remediation and abatement work.

"Great job!"

Michael M on August 2022

QualTech Corp. is a family owned business. We have been in business since 2005. We accept all major credit cards. Details about our business can be found on our website at www.QualTechNY.com. We install a free Humidex Ventilation system with all jobs greater than $ 8500. We provide a written 5 year warranty with all mold remediations. We can provide rebuilding also after remediation and abatement work.

"Great job!"

Michael M on August 2022


"Carlos and his crew were excellent. They did a beautiful job siding the house and replacing a window. Very neat, cleaned up everyday. Very courteous! Took their time taking down old siding and installing new siding. I would highly recommend this company. Absolutely beautiful!"

Jo M on November 2023

"Carlos and his crew were excellent. They did a beautiful job siding the house and replacing a window. Very neat, cleaned up everyday. Very courteous! Took their time taking down old siding and installing new siding. I would highly recommend this company. Absolutely beautiful!"

Jo M on November 2023


Avatar for Healthy Home Services

Healthy Home Services

5.00(
31
)

Healthy Home Services

5.00(
31
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

With many years of experience, Healthy Home Services has been providing professional indoor air quality services to Long Island, Five Boroughs, Westchester, New Jersey and beyond. We help homeowners, property owners and managers, real estate professionals, service professionals and medical professionals. We stay up to date on all the current technology, science and machinery in order to provide top quality service for our clients. Our services include everything from minor remediation jobs to major in-home demolition. We specialize in non-invasive mold and odor treatments when the project allows for it. All products we use are natural and safe.

"Very professional and reasonable"

Manny M on December 2022

With many years of experience, Healthy Home Services has been providing professional indoor air quality services to Long Island, Five Boroughs, Westchester, New Jersey and beyond. We help homeowners, property owners and managers, real estate professionals, service professionals and medical professionals. We stay up to date on all the current technology, science and machinery in order to provide top quality service for our clients. Our services include everything from minor remediation jobs to major in-home demolition. We specialize in non-invasive mold and odor treatments when the project allows for it. All products we use are natural and safe.

"Very professional and reasonable"

Manny M on December 2022

...
Showing 1-10 of 64
Radon Detection and Reduction questions, answered by experts

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

A professional indoor air quality inspection takes anywhere from one to three hours, depending on the size of your home and the number of necessary samples. After the test, the specialist will discuss the findings, but you won’t get a full written report for 2 to 10 days, though you can ask your pro to expedite the process, if needed. 

Mold, VOCs, radon, carbon monoxide, and particulate matter are typically measured.

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

The Speonk, NY homeowners’ guide to radon detection and reduction services

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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"