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Question DetailsAsked on 3/31/2015

Considering replacement windows ("end gliders" with fixed center pane). comparing Pella, Anderson, Marvin fiberglass

we're comparing Pella, Anderson and Marvin replacement windows. Any comparative thoughts on quality, durability, and warrantee?

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1 Answer


Can I ask why Fiberglass versus a High quality designed vinyl window?

Some try to correlate Attic Fiberglass insulation to compressed fiberglass window extrusions.

Completely different correlation. Strength doesnt necessarily mean better energy efficency. Same is true with Glass options.

First introduced by Owens- Who later discontinued producing it under their name mostly based on poor design, so durability could be hard to determine as they first were introduced in the market sometime in the late 90's. If looks is the key factor then Marvin makes a decent window as far as quality. They all have their Pro's and Con's based on opinions and the climate location you live in. I personally don't see the energy ratings and twice the cost factor verses a high quality designed Vinyl replacement window installed properly as far as workmanship, when you compare the Pros and cons between the 2 Products. A key factor to keep in mind is the glass options available and the quality of installation workmanship. You can buy the best yet if not installed properly can lead to issues down the road.

I don't offer either of the manufacters you are comparing yet have installed all mentioned. A contractor will always state they offer the best window whether it be fiberglass, vinyl etc. Bottom line is the total package-workmanship, window deign, extrusion design, the window testing that goes on to constantly improve a high quality window, Exceeding 2015 Energy Star glass ratings and most importantly previous customers from the contractor you select and the time to look first hand at their workmanship. Their are varying reviews depending who rates them, Consumer Reports, JD Powers etc. I know this may not help you too much in your comparisons, it does make it confusing for the consumer with so many variables involved and many window manufacters in the industry. There are some very high quality Vinyl windows available today offering many diffferent color variations. Soft-Lite, Okna and of course the one I offer for nearly 20 years Polaris. As I mentioned before, we all can claim to offer the best in the long run. So obviously I ve found that an UltraWeld is one of the highest quality manufactured window top to bottom being that I ve used it for so many years. They constantly go through testing to improve based on feedback from the consumer, contractor, exceeding to improve their energy ratings, design and use their own designed extrusion, as opposed to lego designed windows. The Leggett family values intregity to the consumer. Best of luck on your decision.

Answered 5 years ago by TheWindowManofOhio

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