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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(
95
)
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

"Ro came to evaluate the glass work I needed for my cracked window glass . It was obvious by his evaluation that he has expertise in this area. He special ordered the glass I needed and promptly replaced the glass on the day we agreed on . He showed up promptly to his appointments and is reliable. He did an excellent job replacing the glass with ease and it is perfect and looks great. He works quickly , thoroughly and neatly. I am very pleased with his work and would highly recommend him. He was also able to replace a screen for my very large patio sliding door and it looks great. Don’t hesitate to hire Windows by Ro"
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 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

"Mike is great! He’s easy to talk to, pays close attention to detail, and helps with suggestions. He’s done my backsplash, painted, put furniture together, and hung a barn door, just to name a few and I’ll continue hiring him!"
Bathroom remodeling
Built in bookshelf
Bathroom remodeling
Before
Bathroom remodeling

+57

Response time3 days
Response rate100%
1 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%
4 neighbors recently requested a 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

"Andrew washed all my windows, inside and outside, as well as the windows of three of my neighbors. We are all very pleased with his work. He was prompt, worked quickly and respectfully, and now my windows and screens are spotless!! We all recommend him highly."
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
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

"The entire experience was terrific. Everyone was very professional, experienced and friendly. The window quality is first rate. They made sure everything was cleaned up and in working order. I would highly recommend Home Genius. Thank you Matt, Alex and the entire crew."
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 average cost to screen-in your patio ranges from $2,000 to $4,000. How much you spend depends on the size of your patio, the materials used, and construction complexity. Some patio screen room kits are easy to DIY, but you may need to hire a local screened-in porch builder and obtain permits for more complex designs.

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.

Solar screens use a thick mesh of polyester to block out the UV waves and solar heat. While they are more expensive at about $7.50 per square foot, they can protect your porch or hardwood floors from sun damage and keep the room or porch on the other side of the patio cool.

To ensure the longevity and smooth functioning of new windows, regular maintenance is essential. This includes cleaning the glass and frames, inspecting seals for leaks or damage, and reapplying caulking as needed. It is also important to lubricate all moving parts and operating mechanisms to ensure they continue to operate smoothly.

The screen material you choose depends on your needs. Here are some differences to consider:

  • Fiberglass is the least expensive but needs replacing more often.

  • Aluminum suits almost any job and doesn’t stretch as easily as fiberglass. 

  • Pet-resistant screens are more expensive than fiberglass or aluminum, but they’re also wind and weather-resistant. 

  • Metal screens, like stainless steel, are the most expensive material for rescreening your porch or sunroom. However, they last for years and are golf ball-resistant.  

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.