Landmark Exteriors Reviews 2026

Landmark Exteriors is an Illinois based home improvement company that has been in business since 2004. The company provides roofing, window, siding and door installation for a wide swath of Illinois and lower Wisconsin homeowners. (See locations listed below.) In terms of online reviews, the company is a bit all over the board - some site have them highly rated, while others have them in the just okay range. As we collect our own reviews, we will monitor how consumers rate Landmark Exteriors and give our own score based on consumer reaction. The company does rep some very well regarded brands such as ProVia windows and Marvin. Scroll down to read all of our Landmark Exteriors reviews below.

Overall Rating: Landmark Exteriors gets a 4.4 out of 5 stars based on 4 consumer reviews below.

My Take On This Company: Not a real strong opinion on Landmark Exteriors yet; perhaps because I don't hear all that much about them. Honestly, I'm always a bit reticent to recommend companies that offer so many services because of the old adage "jack of all trades, but a master of none." I do prefer companies that specialize in windows and doors and that's all they do. So that's my bias and perhaps that's not fair.

However, I will say this - Landmark Exteriors does carry two of the best brands in the business and this always impresses me. Well respected brands do have some say in what companies become reps as it reflects on their brand over time. Bottom line is this - worth a project bid from this company.
(Always Get 3 to 4 Local Price Quotes - And My Personal Advice)

Written by: Dane, Site Editor
Experience: 40+ years in window installation and replacement
Editorial Review: Replacement Windows Reviews Team
Original Publish Date - February 4, 2026
Page Last Update: February 14, 2026

Page Sections

• Landmark Exteriors Company Intro
• Company Locations
• What They Sell And Install
• Warranty Information
• Homeowner Landmark Exteriors Reviews

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Landmark Exteriors Locations

What are the locations of Landmark Exteriors? The company operates six branches throughout Illinois. These include Libertyville, Long Grove, St. Charles, Lake Forrest, Gurnee, Grayslake, Arlington Heights, and Naperville.

Landmark Exteriors Windows And Doors

On the windows front, the company sells and installs the Marvin Infinity series (fiberglass), as well as the Marvin Essential (fiberglass), Elevate (fiberglass), and Signature Collection (wood interior). Additionally, the company reps and sells the ProVia Aeris (wood interior), Aspect (vinyl) and Endure series (vinyl). Finally, Landmark sells Andersen windows (wood interiors and composite). All pretty great options to be honest. On the doors front, the company sells and installs ProVia (wood interiors, fiberglass and steel) and ThermaTru (fiberglass and steel).

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Landmark Exteriors Warranty Information

When it comes to home improvement projects, there are two distinct consumer warranties. The first is the product warranty, which comes from the manufacturer(s) and covers windows, siding, fascia, roof shingles, doors, etc. Now, the provisions, timelines and exclusions will vary pretty significantly based on the individual product.

The second warranty is the labor warranty, which is provided by the installer - in this case Landmark Exteriors. The company offers a 5 year labor warranty that begins on the date of installation. If there are issues due to manufacturing defects and the company must repair or replace products, then Landmark Exteriors will cover the labor costs. Of course, the company will do an initial assessment to make sure that the work falls under their labor warranty terms.

It’s always important to read the most up-to-date warranty from both the installation company and manufacturer(s) prior to your purchase.

Homeowner Landmark Exteriors Reviews

Below are company reviews, consumer questions and answers, homeowner and consumer price quotes, accolades, complaints, kudos, and other consumer information.

Dane - Site Editor

ProVia Triple Pane Cost

Hi Dane, looks like I'm going with Provia Endure through Landmark Exteriors. I have a sunroom that has heating and cooler. It faces the west and 3 sides are exposed to outside. I have 12 windows in that room. I'm doing triple pane (TLA-UV), R value 6 but was wondering if you think its worth it to go to the Krypton gas (TLK-UV) R value 9.

Its room comfort Im looking for out there as its too warm in the summer and cold in the winter and wasnt sure if Krypton would help. Cost to go to the Krypton is $1600 additional which I probably will never make up in dollars but again Im looking for comfort. Thanks for the advice.

Tim - Homeowner - from 2025

[Website Editor Reply]

Tim, yes the krypton will help with your window energy efficiency. Is it worth $1600, I'm sort of on the fence on this one. If this is your forever home, do it. If not, skip it. I think that's as honest an opinion as I can offer. Generally, I love the Endure series - its one of the best in the business. Just make sure that the installation company you go with has a solid reputation and online reviews.

Dane - Website Editor - from 2025

Related Topic: Triple Pane Window Cost

Landmark Exteriors Reviews

Thought I’d share my experience with Landmark Exteriors. Overall, generally impressed (with some caveats). We obviously went with them after going through the bid process with a few different local companies. We opted for Marvin fiberglass windows which we ordered in May (delivery was delayed until October due to supply chain snafus).

While the installation itself went smoothly, a number of the windows had silicone residue and smudging all over the exterior glass that we were unable to remove. The sales rep returned and attempted to clean the marks - not successfully. To his credit, he worked with Marvin to determine whether the windows can be professionally cleaned or will need to be replaced.

The issue has still gone unresolved and it’s now been four months since the install. In the meantime, I am left with brand-new windows that look worse than the ones they replaced. It’s just kind of annoying since we went with Marvin for the specific. reason that they said they were the best in the business. I’m not so sure.

- Homeowner - from 2021

[Site Editor's Answer]

Orrin, I’ve never heard of residue that you weren’t able to clean off and can imagine it’s very annoying after the bill came due (Marvin windows are expensive, which makes it even more frustrating I’m sure.) Not to excuse anything, but COVID was a tricky time for many manufacturers and the American consumer was the one(s) that got the bad end of the stick in most cases. Let me know how this resolves and I’ll update our Landmark Exteriors reviews page for consumers to ead down the line.

Dane - Site Editor - from 2021

About The Author

Dane is the site editor of Replacement Windows Reviews and has worked in the window and door industry for more than 40 years. He spent nearly two decades as a professional window installer before transitioning into consumer education and window review analysis.

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