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Company Awards
Recognized by Infinity Windows from Marvin as a Top 10 National Partner
At Global Home Improvement we believe in better products and better value, which is why we LOVE Infinity from Marvin's... [Read more]
The window and door replacement line received top honors in customer satisfaction studyInfinity from Marvin earned number one for customer... [Read more]
James Hardie Siding 2018 Top Volume Achiever
For the 3rd year in a row, Global Home Improvement has to lead the North East and Mid-Atlantic Region in... [Read more]
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Warren County's Most Experienced Marvin Window & Metal Roof Replacement Company

Happy Customers Surrounding Warren County, NJ
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Quality Marvin Window Replacement Contractor in Warren County, NJ

Global Home Improvement is a family owned and operated home improvement and remodeling contractor serving the Warren County, NJ area for over 15 years. We are fully licensed and insured, with access to the best quality products from industry-leading manufacturers and an A+ rating from the Better Business Bureau. We specialize in Marvin Windows primarily in the materials fiberglass, vinyl, and wood. Each material has its own benefits, and we will help you choose the perfect fit for your home. Our vinyl window replacements are versatile and affordable, our wood window replacements will give your home a classically beautiful look, and our fiberglass window replacements are proven to stay durable and strong through any weather. If you're looking to improve your home's energy-efficiency, we offer energy-efficient glass options. Our wide variety of window replacement types includes:

  • Casement windows
  • Double-hung windows
  • Bay and bow windows
  • Picture windows
  • Sliding windows

We also install replacement doors such as entry and front doors, French doors, patio doors, sliding doors, and storm doors. Choose from steel, vinyl, and wood for your door replacement, and enjoy the benefits of our beautiful door installations and window installations for years to come!

Expert Metal Roof Replacement Contractor in Warren County, NJ

Do you have a badly damaged roof that needs to be replaced, or are you interested in increasing your property value with a new roof installation? Global Home Improvement is your authorized roofer in Warren County, specializing in metal roof installations and replacements such as metal tile, metal slate, metal shake, and integrated solar metal roofs. We also offer asphalt shingle roofing and flat roofing, and will ensure that your new replacement roof stays sturdy and weatherproof for the long-term.

No roofing system would be complete without fully functioning gutters and downspouts! At Global Home Improvement, we understand that nothing is worse than dealing with gutters that frequently clog or overflow. When we install a low-maintenance seamless gutter system for your home, you will never have to deal with those hassles again! We offer gutter installation and gutter guards throughout the Warren County area.

High-Quality James Hardie Siding Installation For Your Warren Home

A siding replacement can be the perfect finishing touch to make your home's exterior stand out against the crowd. Global Home Improvement offers James Hardie fiber cement siding, stone/brick veneer siding, and vinyl siding installation, guaranteed to increase curb appeal while adding protection from the outside elements. Best of all, the right kind of siding can make a significant difference in your home's insulation and ventilation, helping you save money on energy bills!

If you need a window replacement, roof replacement, James Hardie siding installation, or gutter work in Warren, NJ or a nearby city or town, Global Home Improvement is here for you. Contact us today to schedule a free cost estimate and get started on your home improvement project!

Job Stories From Warren County, NJ
New gray metal standing seam roof install in Villanova, PA Estate.

This Villanova PA estate is the pinnacle of what Global Home Improvement can do for your home. This home was part of a larger estate in the 1800’s and this historic home was originally built for the help that worked on the estate! Imagine, that Main Line Mini Mansion was actually the home for the workers. With that being said, this project took a lot of workers from slate removal to metal roofing and eventually stucco replacement.


This beautiful renovation features a large charcoal gray standing seam roof with snow guards and custom black half round gutters to match the refinished wood shutters. The metal roof was a large project in itself and while up on the roof we noticed a leak and moisture issue with the stucco. We were able to get the homeowner insurance money to provide stucco remediation and the stucco was repaired and repainted and made to look brand new! The transformation from start to finish speaks for itself as does the story. So when you see this metal roof on countless magazines and billboards in the Delaware Valley you will know why we are so proud of the finished product!

Standing Seam Metal Roofing Project in Newark, DE

This amazing roofing project in Newark, Delaware features a combination roof of Standing Seam and Owens Corning Duration Shingles. When it came time to update their Victorian home, these homeowners wanted to add a WOW factor to their roof, which is exactly why they called Global Home Improvement. Instead of installing only a shingle roof, we added Standing Seam Metal Roofing to the bay window and of course the 15-foot high Turret. This turret is now the focal point of the home and took weeks to complete by our master metal roofing craftsmen.

Gutter Replacement in Newark, DE

This 1840’s house had a standing seam metal roof and integrated gutters that was well over 90 years old and was in dire need or replacement. What resulted was a brand new metal roof system with yankee gutters and custom chimney flashing on 5 very large brick chimneys. The galvalume steel roof features a snap lock system and kynar paint finish that should give this homeowner another 50+ years of metal roof enjoyment. This Delaware homeowner chose a Charcoal Gray metal roof color which accents the bright red brick facade perfectly. This homeowner was looking for a metal roof replacement and proper drainage and functionality for built-in pool gutters and couldn’t be happier. 

Standing Seam Metal Roof Installation in Washington, NJ

This standing seam metal roof installation in Washington, NJ is another great example of how a standing seam metal roof can really bring a modern aspect to your home. This home's asphalt roof was beginning to show signs of deterioration through discoloration and staining. This isn't uncommon to see after just a few years with a new asphalt roof. That's just one of the benefits of these designer metal roofs; perfectly stylish, durable, energy efficient, and will last a lifetime. We at Global Home Improvement specialize is seamless installs around skylights, dormers, chimneys, etc

Standing Seam Metal Roof Installation in Washington, NJ - Photo 1Standing Seam Metal Roof Installation in Washington, NJ - Photo 2Standing Seam Metal Roof Installation in Washington, NJ - Photo 3
Amber Owens Corning Duration Shingle Installation in Blairstown, NJ

For this roofing project in Blairstown, NJ, we installed New Duration asphalt shingles. These homeowners were looking for a cost-effective way to get a durable, attractive roof. This made OD Duration shingles the ideal choice. These shingles are tested to withstand higher winds and their durability helps to keep your home protected for decades to come. OC Duration shingles are an easy, low-maintenance way to get that beautiful new roof you're looking for without breaking the bank.

Amber Owens Corning Duration Shingle Installation in Blairstown, NJ - Photo 1Amber Owens Corning Duration Shingle Installation in Blairstown, NJ - Photo 2Amber Owens Corning Duration Shingle Installation in Blairstown, NJ - Photo 3
Installing Marvin Infinity Sliding Patio Door, Picture Windows, and Slider Windows Installed in Washington Township, NJ

This window replacement in Washington Township, NJ was geared towards installing durable, energy efficient windows with a sleek, modern look. With larger windows, the focus really should be on maintaining a strong seal to keep that insulative factor alive for a long while. This is easy with fiberglass windows for their durable frame. Fiberglass doesn't warp, crack, or rot like wood or vinyl. For this home's interior, a sleek white finish was the perfect choice for a modern look.

Installing Marvin Infinity Sliding Patio Door, Picture Windows, and Slider Windows Installed in Washington Township, NJ - Photo 1Installing Marvin Infinity Sliding Patio Door, Picture Windows, and Slider Windows Installed in Washington Township, NJ - Photo 2Installing Marvin Infinity Sliding Patio Door, Picture Windows, and Slider Windows Installed in Washington Township, NJ - Photo 3Installing Marvin Infinity Sliding Patio Door, Picture Windows, and Slider Windows Installed in Washington Township, NJ - Photo 4
Serving the following Warren County, NJ zip codes
Phillipsburg 08865, Hackettstown 07840, Stewartsville 08886, Washington 07882, Blairstown 07825, Allamuchy 07820, Delaware 07833, Columbia 07832, Great Meadows 07838, Belvidere 07823, Oxford 07863, Port Murray 07865, Hope 07844, Vienna 07880, Johnsonburg 07846, Broadway 08808, Changewater 07831, Buttzville 07829