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William Betz

3.6 (9 reviews)
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Northeast Building Products - This is #2 window out of 5 total that a brown algae is growing between the "sealed" glass.

Northeast Building Products

(15 reviews)

Frankford

Previous homeowners had windows installed by a contractor who sources from NBP. They are covered…read moreunder a lifetime warranty. The previous homeowners left all of their papers. We are still covered, per the warranty. Now the contractor tells us that NBP was sold and won't honor warranties anymore. This sounds crazy. I called NBP and their associate (in the rudest tone imaginable) tells me I have to talk to the contractor. The warranty I have is from the manufacturer. They are the manufacturer. Contractor is telling me the manufacturer won't replace the (defective) windows for free--I have to pay $180 per sash (half a window) and that this is a "deal." I can't believe that this is a "deal" given that--of our 8 windows (16 sashes), we have had to replace 6 sashes (37.5%) in the last 3.5 years... And where will the new sashes they want me to pay for come from? NBP. But those would be covered under a new lifetime warranty... NBP will not even talk to me "you need to talk to your contractor" is immediately followed by them hanging up after I (politely ask) if they can verify if the warranty is still active.

crusader windows installed in 2018 & 3 - 4 years later, a brown algae is growing on the the top…read morepanes in between the glass! As of now, the algae is growing in 5 windows both top & bottom sashes. It appears the windows that are facing east that have been affected. I don't have the receipt from the contractor. From what I've been reading in the reviews from other dissatisfied customers & Northeast Building Products reluctance to honor their warranty on their defective windows, I guess I have to gear up for a fight to replace these disgusting sashes. I think we should contact a consumer help agency to handle our complaints. Acj, Tacony

William Betz - buildingsupplies - Updated May 2026

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