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

Avatar for Glass by Ro
Glass by Ro
5.0(
97
)
Door or Window Screens - Install or RepairWindow Glass - Install or Replace

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%
4 neighbors recently requested a quote
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
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%
3 neighbors recently requested a quote
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

2 neighbors recently requested a quote
Recommended by92%of homeowners
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
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Window Door Contractors FAQs, answered by experts

The best type of window screen for your home depends on your region and your family’s needs. While fiberglass window screens are a popular, affordable, and easy-to-find choice, you may be looking for different benefits, such as a more high-end look, increased strength, or extended durability. The best window screen meets the demands of your home and its residents while staying within your budget.

Tears, holes, or difficulty in opening and closing suggest a need for repair.

Most window screens in residential homes are designed to be removed from the inside, especially with double-hung, single-hung, and casement styles. That said, some setups require exterior removal. Older homes or custom installs may have exterior clips or brackets, and sunscreens are almost always mounted on the outside. Before removing your window screen, look at how it is held in place.

The most affordable way to screen in a porch is to add a base track system to an existing wooden frame. The whole process should cost around $2,000 for supplies, depending on the size of your porch. It’s much pricier to build a screened-in porch or sunroom from scratch—and you’ll probably need to hire a contractor for a project like that.

No, it’s not safe to leave a doggy door open. It might be more convenient, especially at night when you just want to lay in bed. However, when you leave it open, it increases the chance of other critters getting in without your knowledge. Also, it leaves your pup unsupervised for hours at a time.

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.