The Pella Impervia is the company’s fiberglass window that is definitely one of the best known fiberglass models on the market. One of the prime reasons (besides Pella being a large and well known manufacturer) is its inclusion in the Consumer Reports best windows list. Browse below to check out our Pella Impervia reviews.
Series Rating: 6.5 out of 10
Price Point: 8.0 out of 10
Bottom Line: I’m sort of meh on this fiberglass window. I might just pass on this option.
(Always collect 3 to 4 additional bids)
Bill — Site Editor
Pella Impervia Reviews
The Impervia uses a fiberglass frame, clean lines, and a narrow profile – three reasons why the Impervia is so popular with consumers. However, many industry insiders are not as impressed; they cite a somewhat flimsy frame and less-than-stellar design. This can be seen in the energy data such as an air infiltration rate of 0.18 – not very impressive (compare with an Okna 800 window with an air infiltration rate of 0.01). My advice to consumers is to get your hands on the Impervia and see if you can compare this to a Marvin Infinity, for instance.
The Impervia lacks the overall strength and durability when compared to other fiberglass options such as the Milgard Ultra window. It’s not to say the Impervia is a bad fiberglass window. However, for the same price there are better options for the consumer that will offer better long term value and performance.
The Pella Impervia is available in a number of styles, including a double and single hung, awning, casement, and in a horizontal slider. For additional information, please check out our fiberglass window reviews page to compare and contrast all models and options.
Pella Impervia Review vs Marvin Essential
Bill, I have two competing bids – both the exact same price at roughly $1800 per window and that is an installed price. Either the Pella Impervia or the Marvin Essential. These are casements and both come with sound control packages.
Mary – Homeowner – from 2023
Editor Reply
Mary, the price quotes are not bad considering they both include noise control upgrades. The Marvin Essential is the clear winner for me in this head-to-head match up. Bottom me, the Essential is the better window for sure.
Bill – Site Editor – from 2023
Impervia vs Alpen
How do Alpen fiberglass windows stack up against the Pell Impervia?
Doug – Homeowner – from 2024
Editor Reply
Doug, the Alpen is the much better option in my opinion over the Impervia series. The issue with Alpen is availability – so if there is a dealer in your area, go for it!
Bill – Site Editor – from 2024
Pella Impervia Reviews vs Marvin Infinity
We live on Lake Michigan and still have the original windows – some no name aluminum double hungs half of which won’t even open or close. We’re considering either a Pella Impervia fiberglass replacement or a Marvin Infinity replacement. We have bids on both. I expected based on what I’d read on your site to have the Marvin quote come in way higher, but it was the Pella price quote that was like 60 percent more. What is your take on both of these windows?
Judy – Homeowner – from 2023
Editor Reply
Judy, my take is that the Marvin Infinity is the much better of the two. I’m not a huge fan of the Impervia to be honest. The Infinity is well made and the fact that it is 60% lower means this is an easy answer as far as I’m concerned. (More Marvin Infinity Windows Reviews)
Bill – Site Editor – from 2023
Pella Impervia Series Cost
2 Double Casement, 6 Single Casement
Size: Standard
Quote: $13.7K
Included All
Location: California
Project Year: 2021
Pella vs. Restorations
I currently have the Pella Impervia on the back part of my house and the Sunrise Restorations on the font. The Restorations look much nicer and have more features on them – I would have put the Restorations throughout the entire house except there wasn’t alot of color choices, whereas the Impervia had a brown interior and exterior finish color. I’m happy with both options, they don’t leak and they do a great job.
Bill – Homeowner – from 2021
Pella Impervia Windows Review
I personally don’t like the look of the Impervia, it’s just ugly and it has fairly weak numbers as well. I’m not sure why anyone actually buys it. It’s basically the bottom of the barrel in terms of fibergalss. Why would anyone buy it when they could get a top end vinyl window for not much more that would blow the doors off the Impervia from the performance standpoint.
Jim – Installer – from 2020
Impervia vs. Marvin Infinity
I went out and checked out the Pella Impervia and I didn’t like the look of them. I will say that the casement was much nicer then the double hung option. When the DHs are closed there is a rubber gasket weatherstripping that runs along the top sash that is straight out ugly (in my opinion). I pointed it out and the rep agreed, saying they have gotten this comment before and recommended painting it.
I found a neighbor in my area who had them and spoke with him about the Impervia and he said that it sticks on the weatherstripping when they try to open them. They asked the Pella installers to replace them but the company has dragged their feet on coming back out. He said he spoke with the salesperson, who doesn’t seem very motivated to fix the problem now that the sale is done.
I’m now considering the Marvin Integrity, which seems to be a replacement only and thus much less expensive. I like the look of this window and the fact that you an get an all fiberglass or a fiberglass outside, wood inside option.
Blaine – Consumer – from 2018
Pros And Cons
I did a bunch of research on the Impervia and this is what I came up with…
Pros
– Duracast seems very durable
– Available as a double-hung
– Has a thin clean profile
– Can be custom sized to within a quarter inch (nice for replacement)
– Can be painted (rep said standard finish is better long term option)
Cons
– Not available as a triple pane
– The balances seemed cheap & squeaky (demo model)
– Metallic spacer was just mid-range
– Mid range U-value 0.33
– Priced a bit high given comparable performance numbers
– Paint finish seemed a little wavy or uneven on demo
Steve – Consumer – from 2006
Consumer Reports Ratings
The following is Consumer Reports Pella Impervia reviews data. Please note that our editor staff does not find the CR findings to be particularly impressive. Click to find out selections for best vinyl window.
Consumer Reports (2014)
Rating: 59 (out of 100)
Price: $390
Consumer Reports 2012
Rating: 87 (out of 100)
Price: $255 (2012)
Window Resistance At 0 Degrees: Excellent
Window Resistance At 70 Degress: Excellent
Rain Resistance: Very Good
Durability: Excellence
Convenience: Very Good
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