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  • Verified reviews icon3.8k+
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Find Percolation testing pros in Langley Park

Avatar for GAC Services

GAC Services

4.86(
268
)
Approved Pro

GAC Services

4.86(
268
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
710 local quotes requested

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025


Avatar for Professional Home Solutions LLC

Professional Home Solutions LLC

4.78(
117
)
Approved Pro

Professional Home Solutions LLC

4.78(
117
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
48 local quotes requested

All service contracts are highly detailed to ensure that the homeowner knows exactly what services they are paying for and what is included. We are a full service contractor able to fulfill the needs of all customers and projects both large and small. Please visit our website at www.professionalhomesolutions.net to learn more about our company.

"The quality and the fact that they were experienced, and they offered some advice, and it turned out their advice was better to follow."

Jay B on October 2025

All service contracts are highly detailed to ensure that the homeowner knows exactly what services they are paying for and what is included. We are a full service contractor able to fulfill the needs of all customers and projects both large and small. Please visit our website at www.professionalhomesolutions.net to learn more about our company.

"The quality and the fact that they were experienced, and they offered some advice, and it turned out their advice was better to follow."

Jay B on October 2025


"I got a call from R & E Chief Septic llc after contacting Angi’s List, they asked if I knew the location of the tank and I said yes but it was buried, the woman on the line said they would get the drawings from the county, that same day I got a call from Juan one of the employees and he said he was going to stop buy and mark the location, I was not home but when I got home I could see white flags in the yard. They also recommended installing an above ground cover for the next pump out. I got 2 more estimates and they were all higher and neither company offered to come out and mark the tank. We went with R & E Chief because of the great up front customer service. Need to give a shout out to Juan, Fredy and Paco they did an excellent job. And also the woman who answered the phone. So if you need septic work done, put this company at the top of your list. Ron Welch"

Ron W on November 2025

We are a small family own business. Our services include Septic tank cleaning, repairs and installation and grease trap, cleaning, maintenance and small repairs.

"I got a call from R & E Chief Septic llc after contacting Angi’s List, they asked if I knew the location of the tank and I said yes but it was buried, the woman on the line said they would get the drawings from the county, that same day I got a call from Juan one of the employees and he said he was going to stop buy and mark the location, I was not home but when I got home I could see white flags in the yard. They also recommended installing an above ground cover for the next pump out. I got 2 more estimates and they were all higher and neither company offered to come out and mark the tank. We went with R & E Chief because of the great up front customer service. Need to give a shout out to Juan, Fredy and Paco they did an excellent job. And also the woman who answered the phone. So if you need septic work done, put this company at the top of your list. Ron Welch"

Ron W on November 2025


Avatar for Jan General Services LLC

Jan General Services LLC

5.00(
5
)
Approved Pro

Jan General Services LLC

5.00(
5
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Jan General Services truly deserves more than 5 stars! They gave me the lowest quote for a big repair job and still went above and beyond in every way. The team was professional, courteous, and incredibly efficient. They quickly found the source of a water leak and fixed the corrosion behind the drywall of our 65-year-old home. Everything — drywall and all — was done beautifully within just half a day! They were assigned by our home warranty company, yet still provided the lowest quotation. I’m so impressed with their honesty, skill, and workmanship. I’ll definitely call them again and highly recommend Jan General Services to anyone looking for reliable and high-quality work! "

Kowsar C on October 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Jan General Services truly deserves more than 5 stars! They gave me the lowest quote for a big repair job and still went above and beyond in every way. The team was professional, courteous, and incredibly efficient. They quickly found the source of a water leak and fixed the corrosion behind the drywall of our 65-year-old home. Everything — drywall and all — was done beautifully within just half a day! They were assigned by our home warranty company, yet still provided the lowest quotation. I’m so impressed with their honesty, skill, and workmanship. I’ll definitely call them again and highly recommend Jan General Services to anyone looking for reliable and high-quality work! "

Kowsar C on October 2025


Avatar for Forage Mechanical

Forage Mechanical

4.96(
12
)
Approved Pro

Forage Mechanical

4.96(
12
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
8 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Henry was professional and thorough. He went out his was to see that our heat was restored on the coldest day of the year. You can spend a significant amount of money dealing with the big HVAC advertisers in our market but why pay for their ads when you really want competent service? This company provided me everything I expected in a repair."

Korry M on December 2022

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Henry was professional and thorough. He went out his was to see that our heat was restored on the coldest day of the year. You can spend a significant amount of money dealing with the big HVAC advertisers in our market but why pay for their ads when you really want competent service? This company provided me everything I expected in a repair."

Korry M on December 2022


Avatar for Rin Plumbing

Rin Plumbing

4.88(
8
)
Approved Pro

Rin Plumbing

4.88(
8
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

Quality work for a great price. We take great pride in the expertise, quality, and customer service that we provide. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality regardless of how large or small the job.

"Ram responded immediately to the request for service. They were timely and very thorough. I appreciated Ram explaining all of my options and allowing me to make the best decision for my household without pressure. They not only gave us our sink drains back with full functionality, but also repaired a running toilet as well. The peace of mind we now have is well worth the cost."

Kamilah B on April 2022

Quality work for a great price. We take great pride in the expertise, quality, and customer service that we provide. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality regardless of how large or small the job.

"Ram responded immediately to the request for service. They were timely and very thorough. I appreciated Ram explaining all of my options and allowing me to make the best decision for my household without pressure. They not only gave us our sink drains back with full functionality, but also repaired a running toilet as well. The peace of mind we now have is well worth the cost."

Kamilah B on April 2022


Avatar for Len The Plumber Heating & Air, LLC

Len The Plumber Heating & Air, LLC

3.90(
650
)
Approved Pro

Len The Plumber Heating & Air, LLC

3.90(
650
)
Approved Pro
Customers say: Super punctual
618 local quotes requested
29 years of experience

Len The Plumber, LLC. is a leading plumbing and drain company serving Maryland and Washington D.C. Our certified professional plumbers are available same day to assist residential customers in Charles County, Montgomery County, Prince George’s County, and Washington D.C. Our knowledgeable plumbers have years of experience dealing with a wide variety of plumbing issues including plumbing repairs, drain cleaning, water heaters, well systems, heating systems, sewer, water, and gas lines. We’re open 7 days a week with no extra charge on evenings or weekends!

"Tried to schedule a routine maintenance appointment available to customers who signed up for service plans, but Len could not follow through with their commitment three failed/rescheduled appointments in a row!! Each required four hour commitments from the customer. I tried to communicate with dispatch and customer service but unfortunately I don’t think these two departments have an open line of communication between them. I would not recommend for anyone to work with or engage with this company. Len did not follow through on their half of the commitment and disrespected my time as an in office working professional."

Kayla B on July 2025

Len The Plumber, LLC. is a leading plumbing and drain company serving Maryland and Washington D.C. Our certified professional plumbers are available same day to assist residential customers in Charles County, Montgomery County, Prince George’s County, and Washington D.C. Our knowledgeable plumbers have years of experience dealing with a wide variety of plumbing issues including plumbing repairs, drain cleaning, water heaters, well systems, heating systems, sewer, water, and gas lines. We’re open 7 days a week with no extra charge on evenings or weekends!

"Tried to schedule a routine maintenance appointment available to customers who signed up for service plans, but Len could not follow through with their commitment three failed/rescheduled appointments in a row!! Each required four hour commitments from the customer. I tried to communicate with dispatch and customer service but unfortunately I don’t think these two departments have an open line of communication between them. I would not recommend for anyone to work with or engage with this company. Len did not follow through on their half of the commitment and disrespected my time as an in office working professional."

Kayla B on July 2025


Avatar for Willis Builders Inc

Willis Builders Inc

4.64(
321
)
Approved Pro

Willis Builders Inc

4.64(
321
)
Approved Pro
Customers say: Super punctual
128 local quotes requested
21 years of experience

General contractor servicing Montgomery County and parts of Washington DC. Willis Builders is a family owned and operated company, that specializes in additions, kitchen, bathroom and basement remodeling. Our team is skilled in all aspects of residential construction. Willis Builders has built a business on honesty, dedication and hard work. Our goal is to make your renovation dream come true! Contact us today to schedule a free estimate.

"Excellent work. Very happy with the results."

Jon A on May 2025

General contractor servicing Montgomery County and parts of Washington DC. Willis Builders is a family owned and operated company, that specializes in additions, kitchen, bathroom and basement remodeling. Our team is skilled in all aspects of residential construction. Willis Builders has built a business on honesty, dedication and hard work. Our goal is to make your renovation dream come true! Contact us today to schedule a free estimate.

"Excellent work. Very happy with the results."

Jon A on May 2025


Avatar for Elohim Construction, LLC

Elohim Construction, LLC

5.00(
8
)
Approved Pro

Elohim Construction, LLC

5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
56 local quotes requested

At Elohim Construction, LLC, one call does it all. We specialize in Complete Bathroom and Kitchen remodeling and more. No project is too large . We can help save time from the first phone call through project completion. We help by multi-tasking work which means we complete jobs faster and better than your typical handyman for hire. We are located in Pasadena and only serve in the state of Maryland.

"Arturo, Wendy and the team are outstanding and very professional. They are masters at building, designing and delivering a magnificent product! We needed two bathrooms renovated, one to meet the needs of my husband with medical disabilities. Arturo understood the request and immediately put a plan in place. The team implemented and succinctly executed so that the job was done neatly and before the deadline. HIRE THIS TEAM!! You will be so glad you did! We are so pleased - both bathrooms are BEAUTIFUL!!"

Gina T on November 2024

At Elohim Construction, LLC, one call does it all. We specialize in Complete Bathroom and Kitchen remodeling and more. No project is too large . We can help save time from the first phone call through project completion. We help by multi-tasking work which means we complete jobs faster and better than your typical handyman for hire. We are located in Pasadena and only serve in the state of Maryland.

"Arturo, Wendy and the team are outstanding and very professional. They are masters at building, designing and delivering a magnificent product! We needed two bathrooms renovated, one to meet the needs of my husband with medical disabilities. Arturo understood the request and immediately put a plan in place. The team implemented and succinctly executed so that the job was done neatly and before the deadline. HIRE THIS TEAM!! You will be so glad you did! We are so pleased - both bathrooms are BEAUTIFUL!!"

Gina T on November 2024


Avatar for American Contractor Near Me!

American Contractor Near Me!

4.17(
6
)
Approved Pro

American Contractor Near Me!

4.17(
6
)
Approved Pro
Customers say: Quality work
281 local quotes requested
25 years of experience

American Contractor Near Me specializes in expert home remodeling and renovation. We deliver high-quality kitchen and bathroom renovations, basement finishing, and home additions. We prioritize customer satisfaction and budget-friendly solutions. Our Services: Kitchen Remodeling Bathroom Renovations Basement Finishing Home Additions Deck Construction Custom Patios Why Choose Us? Experienced remodeling contractors Quality workmanship Customer satisfaction guaranteed Free consultations Contact us for your dream home renovation today! 800-876-8393

"No show! Poor communication! I found them on Angi and request a quote for a small project. They contacted me and scheduled a site visit for Friday morning, they confirmed the appointment with two separate text messages. I took off work on Friday and they never showed up, they never called, they never texted. After the appointment window, they never answered their phones even during normal business hours."

Paul Y on September 2025

American Contractor Near Me specializes in expert home remodeling and renovation. We deliver high-quality kitchen and bathroom renovations, basement finishing, and home additions. We prioritize customer satisfaction and budget-friendly solutions. Our Services: Kitchen Remodeling Bathroom Renovations Basement Finishing Home Additions Deck Construction Custom Patios Why Choose Us? Experienced remodeling contractors Quality workmanship Customer satisfaction guaranteed Free consultations Contact us for your dream home renovation today! 800-876-8393

"No show! Poor communication! I found them on Angi and request a quote for a small project. They contacted me and scheduled a site visit for Friday morning, they confirmed the appointment with two separate text messages. I took off work on Friday and they never showed up, they never called, they never texted. After the appointment window, they never answered their phones even during normal business hours."

Paul Y on September 2025

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Percolation Tests questions, answered by experts

DIY kits are available, but professional testing ensures accurate results and compliance with regulations.

More than likely, you will not notice exposure symptoms for quite some time, which is one of the reasons why asbestos is so dangerous. Shortness of breath, persistent coughing, chest pain, and other respiratory symptoms are signs of severe asbestos poisoning that typically lead to more dangerous conditions, such as mesothelioma, asbestosis, and other forms of lung cancer.

Some pros may recommend covering a popcorn ceiling that tests positive for asbestos with beadboard ceiling planks or drywall. The cost to install a beadboard ceiling averages more than $5,000, but you likely will pay more than the average for the installer to deal with the asbestos safely. Installing a beadboard ceiling or new drywall will disturb the asbestos and release some microscopic fibers, so the installer will need to take precautions. 

Asbestos has many beneficial properties, including fire resistance, strength, and chemical resistance. It is also an excellent insulator, which is why it was used in pipe insulation and other building materials for decades. For all its benefits, asbestos is dangerous for human health, which is why it was eventually banned from use in certain products.

Epoxying over asbestos tiles is generally considered a safe option when done correctly. Epoxy acts as a sealant, encapsulating the asbestos tiles and preventing the release of asbestos fibers into the air. The key is ensuring that the asbestos tiles are in good condition, firmly adhered to the substrate, and not damaged or deteriorating. This method is only appropriate for tiles that are undamaged and securely in place. If the asbestos tiles are already loose, damaged, or deteriorating, encapsulating them with epoxy may not be a sufficient solution, as it might not address the potential for ongoing asbestos exposure.

The Langley Park, MD homeowners’ guide to percolation testing services

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