Our list of FAQs are here to help you learn about the windows and doors we sell and install. Below are some of the commonly asked questions from customers at NEXT Door & Window. If you have any additional questions please don’t hesitate to reach out to one of our experts here.

Sales/ Product FAQ


A: We offer check, cash and most major credit cards for your convenience. Financing is also an option through NEXT Door & Window.

Q: Does NEXT Door & Window have a showroom where I can see the product?

A: We have three to serve you better, Burr Ridge, Naperville, and Arlington Heights. Please stop by for a free no hassle demonstration.

Q: Are you listed on BBB?

A: Yes we are an accredited member

Q: Do you offer free estimates?

A: Yes, we have qualified door and window professionals who will assess your project carefully and offer options that fit your style and budget.


A: Somewhere between 6 to 12 weeks. It will depend on time of year and the product purchased. The sales consultant can best answer this while in the home for the estimate.

Q: Is vinyl, fiberglass or wood the best option for me?

A: All three materials may be able to fulfill your needs. NEXT Door & Window is pleased to offer all three options. Our consultant will make the best recommendation based upon your needs, budget & tastes.


A: Try the Better Business Bureau for starters. Almost 1,500 installations per year and we have maintained an A+ Rating.  Also, we have excellent marks & reviews on Angie’s List. Ask the consultant for copies of these.

Q: Do you have Liability & Worker Comp Insurance?

A: Yes, we carry full General Liability and Worker Compensation Insurance.

Q: Are you an Angie’s List Member?

A: Yes, we have won Angie’s List Super Service award for 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

Q: Why do you offer several brands and materials

A: We only carry brands that pass our rigorous inspections and meet our strict warranty requirements. We offer different brands of windows and doors, so we can offer the correct solution for your home.

Q: Will NEXT Door & Window stain or paint my windows & doors interiors after install?

A: Actually, we prefer to “factory finish” even before installation. Everything is installed complete and we even fill nail holes and any touch-ups. Would you order kitchen cabinets unfinished? NEXT Door & Window is confident that this process offers you the best finish system possible. No smells, no mess, etc

Q: Do I need custom sized windows or doors?

A: Many lines are available in both standard & custom. The consultant will ensure to propose the very best size for your particular opening.

Service/Maintenance FAQ

Q: Who do I call if there is a service issue?

A: NEXT Door & Window has a full installation and service team with 25 trucks in the field. Just call or click and talk to a door and window professional immediately. If a house call is needed, we will schedule a convenient time with one of our service professionals.

Q: Will I have to paint the exterior of my windows periodically?

A: No, NEXT Door & Window installs low maintenance exterior products and even the exterior trim is custom wrapped in aluminum.

Q: How should I clean my door and/or windows when they get dirty?

A: Consult your owner’s manual for specific manufacturer’s instructions. Mild soap and water usually works well for exteriors.

Q: How to reset the DH sash / I can’t get my window back in after cleaning?

A: Please click here for the information

Q: What causes condensation?

A: There are 2 types of condensation interior and exterior. Exterior condensation usually occurs in the warmer months and interior condensation in the winter months. Interior condensation is most often caused by extreme cold outside and excess moisture present inside the home. There are measures that can be taken to reduce interior condensation. Click here for our condensation brochure.

Q: When will I have to re-stain or do a new clear coat on my new door?

A: Severe sun exposure may require top-coat maintenance on stained door exteriors every few years.

Q: How do we tilt-in the sash for cleaning?

A: Please click here for information

Q: How do I get my sliding screen back on track?

A: Please click here for the information.

Installation FAQ

Q: Does NEXT Door & Window protect my floors & belongings?

A: Our factory authorized installers will use drop cloths & runners to protect the floors. Customers may want to cover furniture with bed sheets for dust protection.

Q: What type of insulation does NEXT Door & Window use?

A: We use both fiberglass and low expansion foam. This ensures the best insulation properties possible.

Q: Will my window treatments work as is?

A: The NEXT Door & Window sales consultant will be able to answer that best when they are in the home. Each application is different.

Q: Will I need to repaint my interior walls?

A: NEXT Door & Window only installs in existing homes. Our installers are very careful to not disturb current wall conditions. Wider interior casing may be required to guarantee that paint lines will not be affected.

Q: Do I need to take off work for installation?

A: Some doors can be installed in as little as 4 hours, but it usually takes most of the day. An entire house of windows can take from 2-4 days on average or more for over 15 windows. NEXT Door & Window attempts to make the installation process easy.

Q: Do you offer full frame replacement with new casing?

A: We offer full frame installation with all new interior casing, or insert installation where your existing interior casing stays. Our professionals can explain both options and offer the best one for your home.

Q: Does the customer need to provide a dumpster?

A: No, NEXT Door & Window will remove the old product from the property and all job related debris. We even shop vacuum & sweep.

Q: Do I need to pull permits?

A: NEXT Door & Window will pull permits, when required, and NEXT Door & Window is licensed, bonded & insured.

Q: What will happen to my shutters on the outside of my house?

A: When necessary, NEXT Door & Window will remove & re-install. New shutters can be provided in the written estimate.

Q: Will my home be a mess during installation?

A: Not really! Our installers will use your driveway or garage for all saw work. We will even sweep the driveway upon completion. Dust is kept to a minimum on the inside of your home.

Q: Does NEXT Door & Window deliver the windows to me before install?

A: NEXT Door & Window stores all products in our warehouse until the day of install. No need for you to take up valuable garage space.

Warranty FAQ

Q: Is there a manufacturer’s warranty?

A: Yes, each manufacturer offers its own product warranties. We can answer any warranty questions you may have about different brands.  (Click here for warranty page)

Q: What is the labor Warranty?

A: The Labor warranty is 5 years from date of installation.

Tax/ Rebate FAQ

Q: Are there any Tax rebates available for door and window replacement?

A: Please click here to visit our Tax Rebate page.

Energy efficiency FAQ

Q: What is insulated glass?

A: Insulated glass consists of at least 2 layers of glass with an air space between.

Q: What is Argon gas?

A: Argon is an odorless, colorless, non-toxic, inert gas that can be used instead of air between panes of glass to increase insulation and energy efficiency.

Q: What is Solar Heat Gain?

A: This measures how well a product blocks heat from the sun. The lower the number the better.

Q: What is Energy Star?

A: Energy Star is a joint program of the U.S. Environmental Protection Agency and the U.S. Dept. of Energy helping us all save money and protect the environment through energy efficient products and practices.

Q: What does Low E mean?

A: Low E is a metallic coating on the inside glass surface to reflect or absorb the sun’s warmth and reduce damaging UV rays. Offers enhanced U factor and solar heat gain coefficient.

Q: What is U-value?

A: This measures the rate of heat loss and how well a product insulates. The lower the number, the better a product is at keeping heat inside a building. The U factor is key in winter months, and important to consider in choosing a window.

Q: What is R-Value?

A: This measures resistance to heat loss. Many people are familiar with R value because of its use in home insulation, but actually, for windows and doors, U factor and solar heat gain coefficient are more important measures.