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Avatar for Guardian Protection

Guardian Protection

4.74(
2,120
)

Guardian Protection

4.74(
2,120
)
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies. We provide smart technology, 24/7 professional monitoring, and peace of mind to hundreds of thousands of customers. Our products are installed by experts, monitored by real people, and truly make a difference. We do what we do because of one simple truth: life is better when it's safe.

"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."

William M on December 2024

Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies. We provide smart technology, 24/7 professional monitoring, and peace of mind to hundreds of thousands of customers. Our products are installed by experts, monitored by real people, and truly make a difference. We do what we do because of one simple truth: life is better when it's safe.

"We hired Guardian to install our security system at our Washington, DC, business. The service and quality of the work was horrible. We had cameras and an alarm system installed; it was a relatively large system. They outsource most of the work to various vendors. They could not manage their vendors; what was supposed to take a week took two months. The sales rep did not return calls, and you could never get anyone in management on the phone. Random people would show up at unannounced times. The few things that an actual Guardian employee did were they made a huge mess of our newly remodeled office and were rude to our staff. We have offices in five markets across the US and have high security at each; we have never had such a poor experience."

William M on December 2024


Avatar for Alco Products Inc

Alco Products Inc

4.90(
80
)

Alco Products Inc

4.90(
80
)
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

Alco Products is a licensed, bonded, and insured home improvement company servicing Maryland, Virginia, and D.C. Alco is a family owned and operated company founded in 1956, and holds the 11th oldest active home improvement license in the state of Maryland. Alco Products specializes in the installation of siding, windows, roofs, and doors, as well as kitchens and baths. We are Certainteed Shingle Masters, James Hardie Preferred Contractors, and Marvin Authorized Replacement Contractors. Alco Products is also the proud recipient of a 2016 Contractor of the Year Award in the exteriors category from the NARI - Metro DC chapter.

Alco Products is a licensed, bonded, and insured home improvement company servicing Maryland, Virginia, and D.C. Alco is a family owned and operated company founded in 1956, and holds the 11th oldest active home improvement license in the state of Maryland. Alco Products specializes in the installation of siding, windows, roofs, and doors, as well as kitchens and baths. We are Certainteed Shingle Masters, James Hardie Preferred Contractors, and Marvin Authorized Replacement Contractors. Alco Products is also the proud recipient of a 2016 Contractor of the Year Award in the exteriors category from the NARI - Metro DC chapter.


Avatar for General Home Improvement LLC

General Home Improvement LLC

4.85(
78
)

General Home Improvement LLC

4.85(
78
)
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

Full Service Home Improvement Company Specializing in Replacement Exterior Improvements. Replacement Roofing, Windows, Doors, Gutters & Gutter Protection. We resonantly took over DOOR & WINDOW WAREHOUSE. We will still offer some of there Replacement Doors and Window lines but will Discontinue All Custom and Specialty Wood Lines. We use local and regionally manufactured products and are a Atlas Pro & GAF Certified Roofing Installer. Our focus is outstanding workmanship and customer satisfaction. We take most major credit cards, offer great financing such as our 12 months same as interest free program. We have an A rating with the Better Business Bureau and a Five Star Rating with Home Advisor. I'm sorry we do not offer Handy Man Type Services and are a Full Replacement Company. Email Chris (Owner) - [email protected].

"From start to finish it was a great experience. Fred came out and spoke with my husband and myself. He was very sensitive to our needs and budget. I loved the door that we chose. Installation was amazing the crew arrived on time and treated our home as if were theirs. I would definitely use this company again."

Sonja Y on August 2019

Full Service Home Improvement Company Specializing in Replacement Exterior Improvements. Replacement Roofing, Windows, Doors, Gutters & Gutter Protection. We resonantly took over DOOR & WINDOW WAREHOUSE. We will still offer some of there Replacement Doors and Window lines but will Discontinue All Custom and Specialty Wood Lines. We use local and regionally manufactured products and are a Atlas Pro & GAF Certified Roofing Installer. Our focus is outstanding workmanship and customer satisfaction. We take most major credit cards, offer great financing such as our 12 months same as interest free program. We have an A rating with the Better Business Bureau and a Five Star Rating with Home Advisor. I'm sorry we do not offer Handy Man Type Services and are a Full Replacement Company. Email Chris (Owner) - [email protected].

"From start to finish it was a great experience. Fred came out and spoke with my husband and myself. He was very sensitive to our needs and budget. I loved the door that we chose. Installation was amazing the crew arrived on time and treated our home as if were theirs. I would definitely use this company again."

Sonja Y on August 2019


Avatar for RTS Environmental Services

RTS Environmental Services

5.00(
106
)

RTS Environmental Services

5.00(
106
)
Customers say: Super punctual
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers

RTS Environmental Services has continued to provide excellent award winning services to the D.C. Metro Area since 1990. The depth of our expertise comes from tens of thousands of inspections and successful projects that have solved these problems to the satisfaction of our clients. To speak with us, please call: 1(800) 722-5589

"We highly recommend RTS for anyone with mold concerns. We found what we were concerned was mold in our new house. Our realtor immediately recommended that we reach out to Paul at RTS because so many clients raved about him and his company in the past. Despite the fact that he was out of town, he offered to immediately review photos in order to provide an initial assessment. Paul later came to my home and was extremely knowledgeable, detail-oriented, and caring. He did a terrific job assessing a potential leak in our bathroom and then cleaned and treated the area. Paul then very speedily wrote a clear and detailed report with next steps and helpful recommendations on preventing mold from growing in the damp area. He had multiple conversations with us and our builder and even followed up to confirm that our builder was taking the necessary remedial measures. It is obvious that Paul cares for his clients and will take the extra time to make sure all their concerns are addressed."

Michael G on August 2023

RTS Environmental Services has continued to provide excellent award winning services to the D.C. Metro Area since 1990. The depth of our expertise comes from tens of thousands of inspections and successful projects that have solved these problems to the satisfaction of our clients. To speak with us, please call: 1(800) 722-5589

"We highly recommend RTS for anyone with mold concerns. We found what we were concerned was mold in our new house. Our realtor immediately recommended that we reach out to Paul at RTS because so many clients raved about him and his company in the past. Despite the fact that he was out of town, he offered to immediately review photos in order to provide an initial assessment. Paul later came to my home and was extremely knowledgeable, detail-oriented, and caring. He did a terrific job assessing a potential leak in our bathroom and then cleaned and treated the area. Paul then very speedily wrote a clear and detailed report with next steps and helpful recommendations on preventing mold from growing in the damp area. He had multiple conversations with us and our builder and even followed up to confirm that our builder was taking the necessary remedial measures. It is obvious that Paul cares for his clients and will take the extra time to make sure all their concerns are addressed."

Michael G on August 2023


Avatar for On the Level Contracting & Trucking, Inc.

On the Level Contracting & Trucking, Inc.

5.00(
19
)

On the Level Contracting & Trucking, Inc.

5.00(
19
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Established in 1995, our local, family owned and operated business strives to provide exceptional remodeling services. Turn to On The Level Contracting in Chantilly, VA for plumbing and electrical, kitchen and bathroom remodeling, deck services, and more. Depend on our team to take care of all your needs efficiently! You can give us a call at 571-375-1700 for more information!

"We had a very complex front door to install and On the Level did a superior job -- the quality of the work was superb, the price was more than fair, and all of the work was completed in a timely manner. Peter did a great job communicating through out the process --we would hire them again."

jeffrey s on April 2020

Established in 1995, our local, family owned and operated business strives to provide exceptional remodeling services. Turn to On The Level Contracting in Chantilly, VA for plumbing and electrical, kitchen and bathroom remodeling, deck services, and more. Depend on our team to take care of all your needs efficiently! You can give us a call at 571-375-1700 for more information!

"We had a very complex front door to install and On the Level did a superior job -- the quality of the work was superb, the price was more than fair, and all of the work was completed in a timely manner. Peter did a great job communicating through out the process --we would hire them again."

jeffrey s on April 2020


Avatar for Nova Renovation Group

Nova Renovation Group

4.89(
28
)

Nova Renovation Group

4.89(
28
)
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

Nova Renovation Group is dedicated to providing the very best in residential and commercial building services. Offering a complete pallet of services for your renovation, alteration, repair or addition, NRG will surpass your expectations on every level. Nova Renovation Group will competently handle all phases of your project from design and planning through completion. We will gladly meet with you in your home or our office to define your personal style and create a project overview and timeline to suit your immediate needs as well as long term plans. Additional address - 5411 Backlick Rd, Springfield, VA 22151.

"My wife and I are incredibly satisfied with our renovated home. From the design work done by Dave at NRG to very efficiently use our limited space, to the on-schedule completion of the work to facilitate our tight move-out/move-in schedule, to the outstanding punch list finishing work the NRG team did to make the minor repairs involved in every home project, to NRG's doggedness and determination to make sure we are satisfied all the way to the finish line--we really couldn't ask for a better home renovation experience. Even after unexpected but essential change orders like a new roof and sistered first floor joists, and the inclusion of the unanticipated desires like the purchase and installation of the basement Murphy bed, NRG's original price estimate was within a couple percent of the final total, which really says something about the effort and quality Dave and the NRG team put into their work, their professionalism, and their determination to get it right. My wife and I got everything we wanted at the price NRG quoted, which was right smack in the middle of the five bids we received and was quite fair and reasonable. NRG's commitment to stand by their work has given me great peace of mind. We have had minor hiccups since moving back in, each of which has been successfully and quickly resolved, and whenever something unexpected occurs, I remember and rest on Dave's assurance: "If there's an issue, we'll fix it. We stand by our work." That's exactly what Dave and NRG have done. Dave is not just a general contractor, he also serves as a counselor and mentor throughout the renovation process whom you can trust."

William G on November 2018

Nova Renovation Group is dedicated to providing the very best in residential and commercial building services. Offering a complete pallet of services for your renovation, alteration, repair or addition, NRG will surpass your expectations on every level. Nova Renovation Group will competently handle all phases of your project from design and planning through completion. We will gladly meet with you in your home or our office to define your personal style and create a project overview and timeline to suit your immediate needs as well as long term plans. Additional address - 5411 Backlick Rd, Springfield, VA 22151.

"My wife and I are incredibly satisfied with our renovated home. From the design work done by Dave at NRG to very efficiently use our limited space, to the on-schedule completion of the work to facilitate our tight move-out/move-in schedule, to the outstanding punch list finishing work the NRG team did to make the minor repairs involved in every home project, to NRG's doggedness and determination to make sure we are satisfied all the way to the finish line--we really couldn't ask for a better home renovation experience. Even after unexpected but essential change orders like a new roof and sistered first floor joists, and the inclusion of the unanticipated desires like the purchase and installation of the basement Murphy bed, NRG's original price estimate was within a couple percent of the final total, which really says something about the effort and quality Dave and the NRG team put into their work, their professionalism, and their determination to get it right. My wife and I got everything we wanted at the price NRG quoted, which was right smack in the middle of the five bids we received and was quite fair and reasonable. NRG's commitment to stand by their work has given me great peace of mind. We have had minor hiccups since moving back in, each of which has been successfully and quickly resolved, and whenever something unexpected occurs, I remember and rest on Dave's assurance: "If there's an issue, we'll fix it. We stand by our work." That's exactly what Dave and NRG have done. Dave is not just a general contractor, he also serves as a counselor and mentor throughout the renovation process whom you can trust."

William G on November 2018


Avatar for DEVERE INSULATION HOME PERFORMANCE

DEVERE INSULATION HOME PERFORMANCE

4.82(
107
)

DEVERE INSULATION HOME PERFORMANCE

4.82(
107
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

DeVere Insulation Home Performance is locally owned and operated, serving homes and businesses in the Baltimore, MD area and across the entire state of Maryland. We provide air sealing, attic insulation, crawl space insulation, energy audits, knee wall insulation, energy audits, wall insulation and more. We work with local utilities to help maximize energy improvement rebates and save you money on home energy upgrades. We have the expertise to install insulation in any project. Contact us today for your free estimate and to discuss your home energy issues.

"The entire process was great. From call to schedule an estimate, professionalism and knowledge of estimator Michelle, and professionalism, courtesy and knowledge of workers. My neighbor recommended this company in 2018 and we finally got around to getting the work done ourselves, We are very happy."

Jewelene R on May 2020

DeVere Insulation Home Performance is locally owned and operated, serving homes and businesses in the Baltimore, MD area and across the entire state of Maryland. We provide air sealing, attic insulation, crawl space insulation, energy audits, knee wall insulation, energy audits, wall insulation and more. We work with local utilities to help maximize energy improvement rebates and save you money on home energy upgrades. We have the expertise to install insulation in any project. Contact us today for your free estimate and to discuss your home energy issues.

"The entire process was great. From call to schedule an estimate, professionalism and knowledge of estimator Michelle, and professionalism, courtesy and knowledge of workers. My neighbor recommended this company in 2018 and we finally got around to getting the work done ourselves, We are very happy."

Jewelene R on May 2020


Avatar for MacKay Home Improvements

MacKay Home Improvements

4.72(
57
)

MacKay Home Improvements

4.72(
57
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

Family owned & operated. Lewis Mackay is a fourth generation contractor. Serving Washington D.C. Since 1974 specializing in flat, slate , and shingle roofs as well as wood sheathing, rafters , and beams damaged by water , neglect , storms , or earthquakes . We also repair and waterproof chimneys and brick walls . And repair and replace all types of gutters and install gutter guards on all kinds of gutter systems

"Fine. No problems. Friendly, knowledgeable, efficient, cleaned up after work."

Raphael B on November 2021

Family owned & operated. Lewis Mackay is a fourth generation contractor. Serving Washington D.C. Since 1974 specializing in flat, slate , and shingle roofs as well as wood sheathing, rafters , and beams damaged by water , neglect , storms , or earthquakes . We also repair and waterproof chimneys and brick walls . And repair and replace all types of gutters and install gutter guards on all kinds of gutter systems

"Fine. No problems. Friendly, knowledgeable, efficient, cleaned up after work."

Raphael B on November 2021


Sycamore Design Build Inc

5.00(
24
)

Sycamore Design Build Inc

5.00(
24
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Sycamore Design Build, Inc builds in Montgomery County, MD. Whether you’re planning on building a new home large or small, doing a whole house renovation, or add an addition to an existing home, Sycamore is your ideal choice. If you have a project in mind you’d like to discuss, please contact us for a free consultation!

Sycamore Design Build, Inc builds in Montgomery County, MD. Whether you’re planning on building a new home large or small, doing a whole house renovation, or add an addition to an existing home, Sycamore is your ideal choice. If you have a project in mind you’d like to discuss, please contact us for a free consultation!


Avatar for Apex Waterproofing

Apex Waterproofing

4.65(
129
)

Apex Waterproofing

4.65(
129
)
Customers say: Super punctual
2009 years of experience

Welcome to Apex Waterproofing, your one stop shop for whole home remodeling, residential and commercial basement waterproofing and foundation structural concerns. We are a fully licensed, bonded, and insured 3rd Generation General Contractor providing quality services to the Northern Virginia and Maryland areas since 1943.

"I used Apex to fix a situation where water would leak into my basement through the electrical panel during a long, heavy downpour. It was a particularly unique and difficult problem to solve which involved excavating under part of a flagstone patio, determining the source(s) of the leak and sealing. Their final solution was very thorough and attacked the problem from multiple directions. I was impressed with their dedication to doing the job right. The clean-up was also thorough (the patio looked better after they left than before they started!) The crew was great! They worked hard and knew what they were doing. Since it was such a tricky problem, Lou, the manager, was on-site for most of the day. They also have an excellent electrician on the team which was a definite plus for this project. I used Apex a couple of years ago to renovate the basement and was very pleased with the result of that project as well. They’ve been in the business for many years and are deservedly proud of their reputation for quality work. I wouldn’t hesitate to use them again."

MARY ANNE C on April 2019

Welcome to Apex Waterproofing, your one stop shop for whole home remodeling, residential and commercial basement waterproofing and foundation structural concerns. We are a fully licensed, bonded, and insured 3rd Generation General Contractor providing quality services to the Northern Virginia and Maryland areas since 1943.

"I used Apex to fix a situation where water would leak into my basement through the electrical panel during a long, heavy downpour. It was a particularly unique and difficult problem to solve which involved excavating under part of a flagstone patio, determining the source(s) of the leak and sealing. Their final solution was very thorough and attacked the problem from multiple directions. I was impressed with their dedication to doing the job right. The clean-up was also thorough (the patio looked better after they left than before they started!) The crew was great! They worked hard and knew what they were doing. Since it was such a tricky problem, Lou, the manager, was on-site for most of the day. They also have an excellent electrician on the team which was a definite plus for this project. I used Apex a couple of years ago to renovate the basement and was very pleased with the result of that project as well. They’ve been in the business for many years and are deservedly proud of their reputation for quality work. I wouldn’t hesitate to use them again."

MARY ANNE C on April 2019

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Insulation questions, answered by experts

Roof vents help cool a house because as they allow hot air to escape, the temperature regulates inside the attic. If vents are defective or there are not as many as there should be, the attic becomes hot and stuffy. Without roof vents, air conditioning has to work harder to maintain a consistent temperature in the attic.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

As you look for the right soundproofing drywall for you, you’ll likely come across the Sound Transmission Class (STC) rating. This rating measures a building material’s ability to absorb sound. The higher the number, the better the material absorbs rather than reflects sound, reducing noise transmission. The STC rating for drywall doesn’t mean it’s for the panel itself—it refers to the STC rating for the entire wall system, including the soundproofing drywall.

Installing insulation helps reduce energy usage, improve home comfort, and lower utility bills by maintaining stable indoor temperatures year-round.

Chimney liners often benefit from insulation, though it is not always required. Insulation helps improve the liner's efficiency by keeping flue gasses hotter, which enhances draft and reduces creosote buildup. It also prevents condensation, which can lead to corrosion. Insulation is important for chimneys on exterior walls or in colder climates. Some building codes may require insulation, so checking local regulations is essential.

The Leonardtown, MD homeowners’ guide to insulation services

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