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When you have received a firm price from your window contractor, make sure these concerns have been completely addressed to your satisfaction: What type of warranty is included? Remember, obtaining a strong, written guarantee should be a mandatory when buying replacement windows. All vinyl window manufacturers should provide a lifetime warranty, as quality vinyl windows and doors are constructed to last a lifetime. The majority of wooden windows, with some form of exterior cladding, provide a ten year warranty. This does not mean vinyl is better, but wood simply does not last forever. The three heavy hitters in the wood window market are Marvin, Andersen, and Pella, all with a ten year warranty.

Understand that there are nonprorated lifetime warranties, and pro-rated lifetime warranties. Nonprorated means the warranty will not depreciate over the course of the lifetime. Many “lifetime” warranties don’t explain this, because they are in fact prorated, costing you additional money later down the line. Find out just how long the manufacturer has been making their windows. A lifetime warranty is no good should the manufacturer suddenly go out of business. Once confident the manufacturer is well established, ask how long the contractor has been replacing windows. Make sure they are licensed and insured. Being licensed and insured doesn’t necessarily mean they’re good, but it does give them accountability.

How much and what type of maintenance is required? You should be told that your windows will be virtually maintenance free and that you will never need to scrape, paint, or stain your windows ever again. Should damage occur or repairs be necessary, how and when will repairs be completed? Any contractor worth their salt will be in position to address damage or repair concerns immediately and not have it take a week or two. How much will the new windows increase the value of your home? The answer will depend primarily on the quantity and quality of the windows you purchase.

Andrew and his team were amazing! The project took several days (demolish and rebuild a staircase and supporting wall). They were on time EVERY day and truly cared about my property. They hung plastic and ensured that the dirt/dust from the project did not permeate the rest of the house.

From the very beginning, Andrew Cosello was professional and knowledgeable. He gave us a fair and appropriate estimate for the job. He communicated well with us throughout the entire job – from informing us as to when the job would begin as well as updates about how long the job would take.

After receiving 7 quotes for the project, we hired Cosello Construction. Cosello’s quote was not the cheapest or the most expensive. We feel that we got what we paid for by hiring Cosello Construction: quality craftmanship, experience, and an industry professional. Cosello Construction worked with our architectural plans and completed the work masterfully.

Andrew and his assistants do excellent work. We had them do major renovations on our investment property, so we hired him for some minor work in our own home. We were very pleased with the work done on both properties and would recommend them to a friend or relative without hesitation.