Window Replacement in Mahwah, NJ

Your quote comes down to four things: how many windows, what style each one is, which brand and glass you choose, and what the openings need once the old units come out. We don’t guess from the driveway. We measure every window, then give you an itemized price in writing at no cost. For a rough number first, use our window replacement calculator.

Your new windows come with the manufacturer’s warranty on the product, plus our written installation workmanship warranty covering how they were put in. Because our warranty is in writing and transferable, it stays with the house if you sell. If something isn’t right, call us at (973) 713-1053.

We walk the house with you, check the frames, sills and glass, and measure every opening you want replaced. We’ll show you photos of any damage and explain your options. You leave with a written quote and zero obligation. The whole visit costs you nothing.

Replacement usually makes sense when the seal has failed and the glass fogs, when wood frames or sills have gone soft, or when drafts come through the frame itself. Windows that just need a bit of caulk often have life left. We’ll inspect every window during a free estimate and only quote the ones that actually need replacing.

Energy-efficient windows are built to slow heat loss and heat gain through the glass, using Low-E coatings, argon gas and multiple panes. They also need a good install to do their job. We won’t quote you savings figures, but we will explain the options honestly and install them so air doesn’t leak around the frame. Call (973) 713-1053.

Ask us at your free estimate and we’ll walk you through it. Financing runs through our financing partner, and approval is for qualified homeowners. You can also start by reading our financing page. Call (973) 713-1053 with any questions.

Look for a window contractor with a NJ Home Improvement Contractor number, liability insurance, itemized written quotes, a careful install process, and strong Google reviews. Nail Force checks every one of those boxes: NJ HIC #13VH14050100, licensed and insured, and five-star rated on Google. Call (973) 713-1053 and compare our quote.

Yes. Every old window, all the trim we remove, and the job debris leaves with us. We clean up inside and out and walk the finished windows with you before we go. You won’t be left with a pile in the driveway.

A double-hung window has two sashes that both slide up and down. It’s the most common style in New Jersey homes. Many newer double-hungs tilt in so you can clean the outside glass from inside the house. We install them from ProVia, Andersen, Pella and Marvin.

Leaks come from the install, so that’s where we focus. Sill pan and flashing first, then the window set level and plumb, then low-expansion foam, then sealant inside and out, then exterior trim capped so water sheds away. Each step is listed on your quote.