Soft-Lite Imperial LS Windows Reviews

Soft-Lite vinyl windows are one of the top brands in the space today. The company makes several great series, including the Elements and the Imperial LS. Soft-Lite doors are also considered some of the best on the market.

The Soft-Lite Imperial LS window 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.

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.

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.
The Soft-Lite Imperial LS Window Series gets a 4.9 out of 5 star rating.

Review By John M. - Site Editor - Updated In 2024

We would really appreciate if you would consider filling out our free form. This allows us to provide you with free consumer info on replacement windows and connects you with 3 quality local price quotes.

We are not incentivized by ANY companies. Send us your bid summaries and we will help you get the BEST DEAL for your particular situation. That’s our personal guarantee to you!

Soft-Lite Imperial LS Window Costs

Consumers can expect to pay $700 to $900 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: $500 to $600 -- *

-- Installation: $75 to $250 per opening --

-- Window & Installation: $700 to $900

» More On Soft-Lite Imperial LS Costs

Type Of Window
Frame Material
Quality Of Window
Type Of Installation
Number Of Windows
Enter Your Zip Code

Soft-Lite Imperial LS Windows 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. 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.

These numbers (all except the air infiltration numbers) are available on the website, which lists thousands of window series and model performance and data numbers.

Soft-Lite Imperial LS Window Warranty

The Soft-Lite Imperial LS warranty is identical to the warranty information listed for the Soft-Lite Pro model window. 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.

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.

Window Warranty

Soft-Lite Imperial LS Reviews

Have a Soft-Lite Imperial LS window review to share with others? Submit your reviews here and have your voice heard.

Ask Jim or John any questions for have on the Soft-Lite Imperial LS and get the answers you need to make an informed decision today!

Soft-Lite Imperial LS Windows

I have a quote looking to install 22 softlite imperial windows of 30k-seems a bit high-what r 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. 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 the only real wya to know whether the bid is inflated or not. Plus, you can always bring a cheaper bid back to the Soft-Lite dealer and ask him to match it — 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 Of Soft-lite Imperial Elite

Hi Jim: 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, but my installer ordered replacement sashes and they arrived today with the exact same holes in the same places...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. I am afraid of dirt, water and bugs having an entry and frankly, the holes look awful...

Would love your thoughts on these things.


Eric - Homeowner - October, 2022

Website Editor's Answer

I can't think of what they could be -- can you send a picture?

Have you sent a picture to the sales rep for an explanation?

Editor John - October, 2022

Soft-Lite Imperial LS vs. Revere Berkshire Elite

May 19, 2016
I've narrowed by search down to the following options for 8 casement windows and 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
R: 50

Soft-Lite Imperial LS with SB60 Glass ($3980)
U Factor: .27
SHGC: .26
VT: .46
AL: .07
DP: 50
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.