Soft-Lite Imperial LS Windows Reviews
The Soft-Lite Imperial LS is one of the better vinyl window options out there, probably in the top 10 vinyl windows on the market. Soft-Lite spent quite a bit of money in the research and development on their top two windows and it shows with this model. Not their top of the line window, see the Soft-Lite Elements review, but their small step down down. Depending on the price point and quality of installation, this model should be considered a good long term value purchase. Scroll down to read more about this window and to browse our Soft-Lite Imperial LS windows reviews.
Review By John M. - Site Editor - Updated In 2025
Soft-Lite Imperial Windows
Standard features include a Integral lift rail, Comfort foam frame fills, triple weatherstripping, a true sloped sill, a recessed sash lock, a super spacer and locking exterior fiberglass mesh screen. The Imperial LS also offers several very nice upgrades from the Soft-Lite Pro window, including a Kevlar reinforced fiberglass meeting rail, a more precision corner weld system, and a coil balance system. The Imperial LS can be ordered in a number of different glass options, including the low-e, Ultra and Ultimate glass packages.
Additionally, consumers can choose from two interior frame colors (white and beige) and five interior wood grain laminates (maple, brazilian cherry, cherry, medium oak, and light oak). The window also comes in 15 exterior colors, including some rather bold color choices such as Royal Brown, Forest Green and Bronze. The Imperial LS model can be ordered as a casement, double hung, picture, slider, or awning - the same options available for the Elements Series.
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Soft-Lite Imperial LS Window Costs
Consumers can expect to pay $800 to $1050 for a medium sized Imperial LS window with standard installation. There are lots of caveat to this price range, depending on the condition of the window frames, upgrades to the window itself, and the type of installation required. Comparable windows include Polaris UltraWeld windows prices and Sunrise Verde costs.
-- Window Itself: $600 to $700 -- *
-- Installation: $150 to $350 per opening --
-- Window & Installation: $800 to $1050
Imperial LS Window Ratings
The Soft-Lite Imperial LS window with the standard low-e glass package will deliver a 0.28 U-factor, 0.23 SHGC, .02 AI and a 0.44 VT. Additionally, an upgrade to the Ultra window package will improve these same numbers to a 0.21 U-factor, 0.18 SHGC, .02 AI and a 0.37 VT. All in all, some of the best window ratings that money can buy.
These numbers (all except the air infiltration numbers) are all available on the nfrc.org website, which lists thousands of window series and model performance and data numbers. Furthermore, this is an excellent resource for consumers looking to compare window brands and options.
Soft-Lite Windows Warranty
The Soft-Lite Imperial LS warranty is identical to the Soft-Lite Pro series. Specifically, this includes a limited lifetime warranty on the the mainframe and sash, and a 10 year warranty on PVC coatings, exterior foil laminates and internal mini blinds.
Additionally, the Imperial LS warranty is transferrable one time. In order for the transfer to apply, the new owner must complete a transfer card and pay a nominal transfer free to. Like all warranties, there are exclusions and limitations that apply so we urge consumers to read the warranty fully before they purchase.
Soft-Lite Imperial LS Windows Reviews
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Ask Jim or John any questions for have on the Imperial LS window and get comprehensive answers you need to make an informed decision today on this exceptional vinyl window!
Imperial Windows Cost Quote
I have a quote looking to install 22 softlite imperial windows. Quote was 30k, which seems a bit high. So, what are your thoughts?
Dave - Homeowner - December, 2022
Website Editor's Answer
Dave, it’s a bit tricky to say whether the bid is high or not. Simply because I don’t quite know what needs to be done to your windows on the install. However, the Soft-Lite Imperial LS is one of the best vinyl windows out there so it’s not a crazy bid, but anything over $1K per window gives me pause.
I’d recommend a couple more bids so you can compare apples to apples. Truthfully, this is how to tell where the bid is legit or not. Plus, you can always bring a cheaper bid back to the Soft-Lite dealer and ask him to match it. In my opinion, this is one of the best ways I know to find the dealers “floor” price. Here is my list of good and great windows if you wanted to continue your search
Editor John - December, 2022
Holes In The Sashes
Hi Jim. So I just had 9 Soft-lite Imperial Elite double-hung windows installed in my home in Massachusetts. After installation, we noticed that each sash has a hole in the lower left and lower right corners. At first, we thought it was a defect. However, my installer ordered replacement sashes and they arrived today with the exact same holes in the same places. Essentially, it seems to be part of their design, but no one from Soft-lite can explain.
I am wondering if you are familiar with these sorts of holes (not to be confused with weep holes on the sills) and if the windows have any integrity issues as a result. Specifically, I am afraid of dirt, water and bugs having an entry and frankly, the holes look awful. Would love your thoughts on these things. Thanks.
Eric - Homeowner - October, 2022
Website Editor's Answer
I can't think of what they could be. However, my advice would be to send a picture to the sales rep for an explanation. Truthfully, this is where I would start.
Editor John - October, 2022
Imperial LS vs Revere Berkshire Elite
Andy
May 19, 2016
I've narrowed by search down to the following options for 8 casement windows. So, I would love to hear opinions on them? Thank you!!
Revere Berkshire Elite with BarrierXP glass: ($3980), U Factor: .28, SHGC: .28, VT: .50, AL: .03, DP: 50, and R: 50.
Soft-Lite Imperial LS with SB60 Glass: ($3980), U Factor: .27, SHGC: .26, VT: .46, AL: .07, DP: 50, and R: 50.
Editor Jim R.
May 19, 2016
Andy, I agree that on paper these two windows look pretty close, it's one of the reasons that choosing the right window presents such a tricky prospect. However, the Soft-Lite Imperial LS window is by far the better made of these two windows. Assuming the installation is equal in quality, I wouldn't hesitate to go with the Soft-Lite option.
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