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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon627
    Verified window and door contracting services reviews

Verified Reviews for Window And Door Contracting pros in Mountainside, NJ

*The Angi rating for Window And Door Contracting companies in Mountainside, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.

*The HomeAdvisor rating for Window And Door Contracting companies in Mountainside, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window And Door Contracting needs.

Last update on March 29, 2026

Top-Rated Window and door contractors in Mountainside - Updated Nov 2026

Avatar for Glass by Ro
Glass by Ro
5.0(
94
)
Window Glass - Install or ReplaceDoor or Window Screens - Install or Repair

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Rolando is your guy. Good price, great work, excellent communication. Gave me estimated and a timeline and installed me a beautiful glass shower enclosure and replaced a window downstairs as well as screens and a screen door. Honest, quick and professional."
Mirror table repair
Mirror table repair
Mirror table repair
Mirror table repair
Mirror table repair

+1

Response time7 hrs
Response rate99%
5 neighbors recently requested a quote
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Avatar for A Condo LLC
A Condo LLC
4.8(
124
)
Doors (Exterior) - Install or ReplaceDoors (Interior) - Install or Replace

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"A+ for showing up when expected. A+ for being courteous and respectful of property. A+ for quality of work performed. Definitely on my list of preferred contractors."
Bathroom remodeling
Built in bookshelf
Bathroom remodeling
Before
Bathroom remodeling

+57

Response time3 days
Response rate100%
1 neighbors recently requested a quote
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Avatar for Star Windows Doors and Siding
Star Windows Doors and Siding
4.9(
230
)
New Windows - 3-5New Windows - 2

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Emergency services offered

Credit card accepted

"Star window and door were excellent. Came exactly on time for the estimate and returned two day later again exactly on time to complete the job. It was refreshing to deal with a contractor who respected time. He did an excellent job fixing my siding. I would highly recommend this company."
My jobs
My jobs
My jobs
My jobs
My jobs

+16

Response time6 hrs
Response rate92%
4 neighbors recently requested a quote
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Avatar for The Flying Locksmiths of New Jersey
The Flying Locksmiths of New Jersey
4.5(
74
)
Doors (Exterior) - Install or Replace - For BusinessDoors - Repair - For BusinessDoors (Interior) - Install or Replace - For Business+1 more

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Pro was very nice and helpful - even did a temporary fix on our door while just making initial assessment to provide quote."
Double Tree
Zoe's Kitchen
Garage Door
Commercial Building
Five Below

+5

Response time1 day
Response rate91%
18 neighbors recently requested a quote
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Avatar for Indigo Construction Co.
Indigo Construction Co.
5.0(
24
)
Doors (Exterior) - Install or ReplaceDoors (Exterior) - Install or Replace - For BusinessDoors (Interior) - Install or Replace+6 more

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"We couldn’t have replaced this door with a better expert. Ryan took measurements and photos, then recommended several doors in various price ranges. We didn’t realize how many options come with storm doors. Ryan gave us some really good recommendations and helped us make a great choice. He installed the door in a half day while we were out. Came back to a gorgeous door/screen storm door combo- something we weren’t even sure could have been done to begin with. Important to know:Throughout the entire process, Ryan was responsive and easy to reach. That’s vital in a world where ghosting is the norm (unfortunately). Ryan is the expert you need for your remodeling needs. Highly recommend!"
Doors Project
Remodeling - Kitchen & Bathroom Project
Buena Vista
N. Mich
Remodeling - General Project

+64

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Request Quote
Avatar for L&V Window Cleaning
L&V Window Cleaning
5.0(
25
)
Door or Window Screens - Install or Repair

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"Came and completed job per their appointment. window washing I have recommended him to others."
Recent Cleanings
Cleaned by L&V
Recent Cleanings
The Finished Result!
Prior to Our Service

+2

Response time8 hrs
Response rate88%
1 neighbors recently requested a quote
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Avatar for Essex Replacement Door & Window, Inc.
Essex Replacement Door & Window, Inc.
4.5(
40
)
Doors (Exterior) - Install or ReplaceDoors (Exterior) - Install or Replace - For BusinessSliding Door - Install+3 more

Serving Mountainside, NJ and surrounding areas

Approved

In business since 1982

Free estimates

Credit card accepted

"The process of ordering the door and installation was great. Very friendly staff. I am very pleased with the work that was done."
Response time2 days
Recommended by88%of homeowners
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Avatar for Monk's Home Improvements Inc.
Monk's Home Improvements Inc.
4.7(
600
)
Doors (Exterior) - Install or ReplaceNew Windows - 3-5New Windows - 6 +

Serving Mountainside, NJ and surrounding areas

Approved (Corporate)

In business since 2007

Free estimates

Credit card accepted

Along with the Monk's Kitchen & Bath Design Studio, we are a full-service home improvement provider. Monk's will help you plan, design, and purchase everything you need for a remodel. Then our expert craftsmen will install everything and our painters will come and complete the job.

Recessed Shelving
Reach-In Closets
My jobs
My jobs
My jobs

+19

4 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
134
)
New Windows - 3-5New Windows - 6 +New Windows - 2

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I had an amazing and efficient experience with Home genius exteriors. My siding, windows , doors & Gutters are all brand new. My project Manager Ivan was amazing and very communicative on all cylinders."
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation

+53

Response time2 hrs
Response rate99%
37 neighbors recently requested a quote
Request Quote
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Showing 1-10 of 863
Window Door Contractors FAQs, answered by experts

Window seals don’t last forever, so they’ll inevitably fail for one reason or another. One of the most common reasons is the expansion and contraction of the glass. When the glass gets warm from sunlight, it expands and adds pressure to the seal; at night, as the glass cools, it contracts. This process, day in and day out, can eventually cause the seal to fail. Other common sources of failure include the house settling over time, chemicals that damage the seal when repainting windows, and incorrect window installation.

Yes, adding windows adds value to a brick house. Homeowners don’t shy away from more natural light and an opportunity to get fresh air. Adding a window is particularly beneficial if you live in an area with good weather for much of the year or if your home has a nice view. Keep in mind that many older brick homes have historic wood windows that add to the charm of the house. When you install a new window in a brick house, you’ll want to find one that matches the aesthetic of the existing windows.

While windows increase a home’s value, how much they increase it can vary. It depends on the age of the home and the type of windows. You can expect about 70% to 85% return on investment (ROI) when adding a window to your home.

The screen on many screen doors is held in place by screen spline. Screen spline is typically a thin vinyl tubing that fits into the groove of the door’s frame and holds the screen in place. To install the spline on a screen door, you’ll need a spline roller—a tool that presses the spline and screen into the door’s narrow groove. Note that old spline can crack and break, so replacing your screens is a good time to replace the spline, too.

Pet-resistant, vinyl-coated polyester is one of the strongest window screen materials available, with some manufacturers touting a 7x increase in strength compared to standard fiberglass screens. Stainless steel security screens are also extremely strong, but they’re not suitable for coastal areas due to the risk of corrosion from salty sea air. If sea air isn’t a concern, stainless steel is extremely tough.

Yes, you can absolutely put a screen on a casement window, and most casement windows come with screens. Unlike with a double-hung, single-hung, or sliding window, the screen in a casement window sits on the inside of the window so that the sash can freely open outward. Screens are especially important for casement windows because the large window opening the window provides leaves your home more open to bugs and outside debris than most other types of operable windows.

The Mountainside, NJ homeowners’ guide to window and door contracting services

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

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