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Avatar for ROI Construction LLC

ROI Construction LLC

5.00(
9
)
Approved Pro

ROI Construction LLC

5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
51 years of experience

Why choose ROI Construction? Our Gold Standard guarantee is 100% customer satisfaction, 100% of the time! - It's that simple. No need to keep looking for “Contractor near me,” we are the top local Maryland and DC family owned Exterior company (est. 1974) that delivers the best results and a positive return on investment in the area! ROI also does a final walkthrough of every-single-job to ensure that we deliver a superior finished product for every ROI customer!

"Very pleased with the roofing and siding work performed by ROI Construction. Jose was especially helpful and very knowledgeable in all areas of home repair, including roofing, skylights, trim and siding. Brooke did a great job scheduling and managing the project. Highly recommend ROI for your roofing/remodeling needs."

Rachel S on September 2025

Why choose ROI Construction? Our Gold Standard guarantee is 100% customer satisfaction, 100% of the time! - It's that simple. No need to keep looking for “Contractor near me,” we are the top local Maryland and DC family owned Exterior company (est. 1974) that delivers the best results and a positive return on investment in the area! ROI also does a final walkthrough of every-single-job to ensure that we deliver a superior finished product for every ROI customer!

"Very pleased with the roofing and siding work performed by ROI Construction. Jose was especially helpful and very knowledgeable in all areas of home repair, including roofing, skylights, trim and siding. Brooke did a great job scheduling and managing the project. Highly recommend ROI for your roofing/remodeling needs."

Rachel S on September 2025


"The company deserves 1000 stars l. Chris came and gave a well thorough inspection and estimate of my actic. Had my concerns and expectations, I had several other companies come and give quotes for double the price. Especially ORKIN. Orkin tried to use care tactics to sign contract without any explanation. Chris gave the quote and the crew arrived a week later as scheduled. Chris has a great work crew who were professional , caring, and did high quality work. Every step of the way, I was communicated and was filled in. I was shown before , during and after photos. And end results were UNBELIEVABLE Chris is fair and honest, he gives reasonable prices and will not take advantage of his customers."

Andrew K on November 2024

Owner operated. Award winning. Quality Insulation

"The company deserves 1000 stars l. Chris came and gave a well thorough inspection and estimate of my actic. Had my concerns and expectations, I had several other companies come and give quotes for double the price. Especially ORKIN. Orkin tried to use care tactics to sign contract without any explanation. Chris gave the quote and the crew arrived a week later as scheduled. Chris has a great work crew who were professional , caring, and did high quality work. Every step of the way, I was communicated and was filled in. I was shown before , during and after photos. And end results were UNBELIEVABLE Chris is fair and honest, he gives reasonable prices and will not take advantage of his customers."

Andrew K on November 2024


Avatar for DUCTZ of the Upper Bay Region

DUCTZ of the Upper Bay Region

4.96(
138
)

DUCTZ of the Upper Bay Region

4.96(
138
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

There IS A DIFFERENCE in duct cleaners. Most only clean "some" of the system, but DUCTZ Cleans the entire system including the Air Handler, supply and return ducts, and all components in the duct system. We are NADCA Certified (National Air Duct Cleaners Assoc) Air duct and Dryer vent Cleaning. DUCTZ is dedicated to making every home a cleaner and healthier place to be. We care about your home and respect it in every way. We don’t just clean ducts, we restore air conditioning systems to peak cleanliness. Our cleaning procedures are in full compliance with the industry standards from NADCA and ACCA. Not all duct cleaners are alike. Our techniques involve far more than simply air whipping your ducts. Ducts are fully brushed with brushes suitable for the ductwork being cleaned (see photos for the huge difference brushing makes over just using air tools). We take before and after photos as part of our process, assuring that all ducts are thouroughly clean. We are experienced and professional HVAC Air Duct cleaners, Ventilation System inspectors, and also perform quality Dryer Vent Cleanng serving Baltimore, Harford and Cecil Counties in Maryland. We are members of, and certified by NADCA (National Air Duct Cleaners Association) specializing in HVAC units and duct work: Certifications include "Air System Cleaning Specialist" and "Ventilation Sytem Mold Remediator" and certified Ventiliation System Inspector (ASCS, VSMR, CVI) from NADCA. Technicians are bright, well groomed, uniformed, experienced, attentive and well trained in all facets of indoor air quality. We service Residential, Commercial, Industrial and Restoration applications. DUCTZ is fully insured and bonded. Estimates are free, as they are an expected part of cleaning using the right methods and at the right price. When you want to breath easy, and live healthy, call DUCTZ. 410-692-9775

"We are having our HVAC replaced and our salesperson recommended DUCTZ. DUCTZ came out on-time today to clean our air vents. The communication prior to the visit was very clear and it was easy to understand the upcoming process. They were very considerate, we toured our home and they went right to work bringing in the needed equipment and moving necessary furniture to access the vent covers. They were diligent and stayed focused on the task. Before I knew it, they were reattaching the cleaned vent covers and removing the equipment. Within a few hours, we had before/after pictures and have a great sense of comfort knowing all the gunk is gone! I highly recommend DUCTZ!"

Lisa B on November 2025

There IS A DIFFERENCE in duct cleaners. Most only clean "some" of the system, but DUCTZ Cleans the entire system including the Air Handler, supply and return ducts, and all components in the duct system. We are NADCA Certified (National Air Duct Cleaners Assoc) Air duct and Dryer vent Cleaning. DUCTZ is dedicated to making every home a cleaner and healthier place to be. We care about your home and respect it in every way. We don’t just clean ducts, we restore air conditioning systems to peak cleanliness. Our cleaning procedures are in full compliance with the industry standards from NADCA and ACCA. Not all duct cleaners are alike. Our techniques involve far more than simply air whipping your ducts. Ducts are fully brushed with brushes suitable for the ductwork being cleaned (see photos for the huge difference brushing makes over just using air tools). We take before and after photos as part of our process, assuring that all ducts are thouroughly clean. We are experienced and professional HVAC Air Duct cleaners, Ventilation System inspectors, and also perform quality Dryer Vent Cleanng serving Baltimore, Harford and Cecil Counties in Maryland. We are members of, and certified by NADCA (National Air Duct Cleaners Association) specializing in HVAC units and duct work: Certifications include "Air System Cleaning Specialist" and "Ventilation Sytem Mold Remediator" and certified Ventiliation System Inspector (ASCS, VSMR, CVI) from NADCA. Technicians are bright, well groomed, uniformed, experienced, attentive and well trained in all facets of indoor air quality. We service Residential, Commercial, Industrial and Restoration applications. DUCTZ is fully insured and bonded. Estimates are free, as they are an expected part of cleaning using the right methods and at the right price. When you want to breath easy, and live healthy, call DUCTZ. 410-692-9775

"We are having our HVAC replaced and our salesperson recommended DUCTZ. DUCTZ came out on-time today to clean our air vents. The communication prior to the visit was very clear and it was easy to understand the upcoming process. They were very considerate, we toured our home and they went right to work bringing in the needed equipment and moving necessary furniture to access the vent covers. They were diligent and stayed focused on the task. Before I knew it, they were reattaching the cleaned vent covers and removing the equipment. Within a few hours, we had before/after pictures and have a great sense of comfort knowing all the gunk is gone! I highly recommend DUCTZ!"

Lisa B on November 2025


"He does not respond to warranty repairs. The window he installed has been broke for almost 2 years, called and left numerous messages but he does not return any of my phone calls."

Michael M on July 2020

Home improvements. Award wining. No repairs. We sell and install our own products. Period.

"He does not respond to warranty repairs. The window he installed has been broke for almost 2 years, called and left numerous messages but he does not return any of my phone calls."

Michael M on July 2020


Avatar for All Aspects Waterproofing

All Aspects Waterproofing

4.92(
404
)

All Aspects Waterproofing

4.92(
404
)
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Serving Maryland, D.C. and Virginia, All Aspects Waterproofing the leader in service and quality. Over 35 years experience, providing ​the quality workmanship needed to keep your basement dry. Our life of the structure warranty is a reflection of our commitment to ensure every customer is satisfied. Whether you're a homeowner or a perspective buyer, ​having a dry basement will add value to your home.

"Been 7 years and everything is still tight! Repointed the block on the inside and painted it about 4 years ago. Paint is holding up. Squared the seal up on the outside and painted there too. Everything outside is holding up as well. The only company that didn't try to sell me a sump pump."

JASON W on June 2023

Serving Maryland, D.C. and Virginia, All Aspects Waterproofing the leader in service and quality. Over 35 years experience, providing ​the quality workmanship needed to keep your basement dry. Our life of the structure warranty is a reflection of our commitment to ensure every customer is satisfied. Whether you're a homeowner or a perspective buyer, ​having a dry basement will add value to your home.

"Been 7 years and everything is still tight! Repointed the block on the inside and painted it about 4 years ago. Paint is holding up. Squared the seal up on the outside and painted there too. Everything outside is holding up as well. The only company that didn't try to sell me a sump pump."

JASON W on June 2023


Avatar for Advanced Green Home Solutions

Advanced Green Home Solutions

5.00(
40
)

Advanced Green Home Solutions

5.00(
40
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

ANNAPOLIS AND HANOVER, MD: Award-Winning BGE, Pepco and Delmarva Power certified Home Energy Audits, Insulation, Air Sealing, Solar, and HVAC -- all with utility rebates. We fix your home's energy efficiency from the inside out. Unlike many contractors, we discount your utility rebate immediately on your proposed work scope, so you don't have to wait for the check in the mail. Angi Super Service Award winners each year from 2016 to 2023! MBE certified Woman Owned Business. Our weatherization crew consists of our own in-house and full-time Lead Carpenter and trained Retrofit Technicians for high quality control. Advanced Green Home Solutions is an elite BPI GoldStar Contractor. Contact us for the $100 Comprehensive Home Performance Audit to qualify for rebates or the No-Additional Cost Quick Home Energy Check-Up (QHEC) in BGE, Pepco, and Delmarva Power areas.

"Great service and professionalism Team was knowledgeable"

Keshia G on October 2023

ANNAPOLIS AND HANOVER, MD: Award-Winning BGE, Pepco and Delmarva Power certified Home Energy Audits, Insulation, Air Sealing, Solar, and HVAC -- all with utility rebates. We fix your home's energy efficiency from the inside out. Unlike many contractors, we discount your utility rebate immediately on your proposed work scope, so you don't have to wait for the check in the mail. Angi Super Service Award winners each year from 2016 to 2023! MBE certified Woman Owned Business. Our weatherization crew consists of our own in-house and full-time Lead Carpenter and trained Retrofit Technicians for high quality control. Advanced Green Home Solutions is an elite BPI GoldStar Contractor. Contact us for the $100 Comprehensive Home Performance Audit to qualify for rebates or the No-Additional Cost Quick Home Energy Check-Up (QHEC) in BGE, Pepco, and Delmarva Power areas.

"Great service and professionalism Team was knowledgeable"

Keshia G on October 2023


In business since 2003. Fully insured by State Farm ins. No subcontracting. We take Cash, Check or Credit Card. Call for Special offers!


Avatar for Zamora’s Remodeling and Painting and General Contractor

Zamora’s Remodeling and Painting and General Contractor

4.91(
239
)

Zamora’s Remodeling and Painting and General Contractor

4.91(
239
)
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Zamoras Constructio con inc home improvement MHC 135091 And general contractor district of Columbia 410522000119 FOR TEXT OR DIRECT CALLS please contact 202-569-0072. Zamora’s Painting is a fully licensed & insured company operating in the Washington DC metropolitan area (Maryland and Virginia) since 1996; we have experience in interior painting, and exterior paint wallpaper removal & drywall repair. Zamoras painting we paint commercial commercial paint buildings apartment Zamoras is home improvement Company MHIC# 135091 Insurance 100% Zamora’s Construction Co inc Residents. paint Additional We do not do house construction or additions, only completely general interior remodeling services kitchen remodeling Bathroom renovation and ceramic installation Additional email - [email protected] Additional contact: Armando Zamora You can send me message at this number cell or call 540 277 5734

"Fantastic job! The basement looks amazing and ads so much value to our home. will use again!"

Jason H on February 2025

Zamoras Constructio con inc home improvement MHC 135091 And general contractor district of Columbia 410522000119 FOR TEXT OR DIRECT CALLS please contact 202-569-0072. Zamora’s Painting is a fully licensed & insured company operating in the Washington DC metropolitan area (Maryland and Virginia) since 1996; we have experience in interior painting, and exterior paint wallpaper removal & drywall repair. Zamoras painting we paint commercial commercial paint buildings apartment Zamoras is home improvement Company MHIC# 135091 Insurance 100% Zamora’s Construction Co inc Residents. paint Additional We do not do house construction or additions, only completely general interior remodeling services kitchen remodeling Bathroom renovation and ceramic installation Additional email - [email protected] Additional contact: Armando Zamora You can send me message at this number cell or call 540 277 5734

"Fantastic job! The basement looks amazing and ads so much value to our home. will use again!"

Jason H on February 2025


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 USA Insulation

USA Insulation

4.90(
325
)

USA Insulation

4.90(
325
)
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

CALL 301-761-1811 FOR A FREE ENERGY ANALYSIS. SERVING VA, MD, BALTIMORE AREA LOCATIONS. We install attic insulation, wall insulation (injected foam from outside,) crawl space insulation, air sealing and garage ceiling insulation. Address: 7389 Washington Blvd, Elkridge, MD 21075. 0% Financing available for qualified individuals.

"USA Inslulation reinsulated attic crawl spaces and knee walls. Estimator came out and was very knowledgable and recommended appropriate insulation for the job. He arrived on time, was pleasant to work with, and provided other energy savings tips. Work included removing old insluation that had fallen down, air sealing, insulaltion baffles, blown in fiberglass and fiberglass batts on the knee walls. The insulation technicians were knowledgeable and conciencious and worked efficietly to complete the job. They put paper tape measures in the blown in section which indicates the depth. The area was cleaned up nicely when done. Office staff was friendly and returned my call with additional information when they said they would. Overall summary - a good value, a job well done, and good people to work with."

John M on February 2023

CALL 301-761-1811 FOR A FREE ENERGY ANALYSIS. SERVING VA, MD, BALTIMORE AREA LOCATIONS. We install attic insulation, wall insulation (injected foam from outside,) crawl space insulation, air sealing and garage ceiling insulation. Address: 7389 Washington Blvd, Elkridge, MD 21075. 0% Financing available for qualified individuals.

"USA Inslulation reinsulated attic crawl spaces and knee walls. Estimator came out and was very knowledgable and recommended appropriate insulation for the job. He arrived on time, was pleasant to work with, and provided other energy savings tips. Work included removing old insluation that had fallen down, air sealing, insulaltion baffles, blown in fiberglass and fiberglass batts on the knee walls. The insulation technicians were knowledgeable and conciencious and worked efficietly to complete the job. They put paper tape measures in the blown in section which indicates the depth. The area was cleaned up nicely when done. Office staff was friendly and returned my call with additional information when they said they would. Overall summary - a good value, a job well done, and good people to work with."

John M on February 2023

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Insulation questions, answered by experts

Don’t install insulation near water heaters, oil burners, or any other object that gets hot. Many insulation materials are fire-resistant, but not entirely fire-proof, so you should take precautions to keep hot things away from fiberglass. This is also why it is imperative to box off lighting fixtures and breaker boxes.

When installing metal siding, a high-quality house wrap is considered the best protection against condensation and moisture infiltration. House wraps can increase a home's efficiency significantly. However, a house wrap is not a replacement for a vapor barrier because it can be permeable when moist air passes through siding. This is why it's essential to follow manufacturer instructions for insulating siding when installing new siding.

While adding insulation can be beneficial, there is too much of a good thing. Too much insulation can seal your house to the point where it can't release moisture that enters it—essentially trapping water vapor inside. Warm, humid climates are extra susceptible to mold from moisture issues, but homes in colder climates can experience condensation from an air-tight home when freezing temperatures thaw.

A vapor barrier keeps moisture out of the crawl space, while insulation reduces the amount of unconditioned air—and sometimes moisture—that enters the space. Coupling a vapor barrier with insulation can help prevent humidity and related moisture damage in a crawl space while also making your home more energy-efficient. Just be sure to use insulation that won’t get damaged from moisture, like rigid foam board or expanding spray foam insulation.

In addition to adding insulation to your attic, you may want to add a radiant barrier. A radiant barrier works by using reflective material, such as foil, on the attic floor. As heat penetrates the roof and enters the attic, the radiant barrier reflects the heat upward and back through the roof. If you receive a lot of direct sunlight on the roof, using both a radiant barrier and insulation in your attic can provide significant benefits.

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