Check the weather-stripping. You want neoprene and multiple layers/applications of it in each window. Stay away from brush type as its inferior in every way. Look for powder coated or stainless steel hardware.
High-Quality Windows = High-Quality Materials
From beautiful, sturdy hardware that won't snap or warp, to consistent color and scratch resistance, to longevity and aesthetic — materials matter for your new windows. Cheap windows are made with low-grade PVC frames and sashes that easily bend, bow, and discolor.
Despite all the benefits of vinyl windows, it's still important to know how long vinyl windows are supposed to last? Cheap vinyl windows won't last long, but quality vinyl windows typically last 20 years or longer, with some lasting as long as 50 years.
How Often Should Windows be Replaced? The average lifespan of windows is between 15 and 30 years. Depending on the craftsmanship of the original installer, the materials used, and the weather conditions where you live, the functional life of your windows can vary between ten and fifteen years.
Vinyl windows, although not as charming, should last from 20 to 30 years. Fiberglass frames are the most durable and last the longest, from about 30 to 40 years. For even the longest-lasting windows, you will still need to keep an eye on the seals and consider how the glass itself will age.
Building-grade vinyl windows generally have two to three internal chambers whereas premium grades have five, six or seven chambers offering superior energy efficiency. These higher end windows will also have polyurethane insulation in their frames.
Proper energy efficient windows should keep the heat out in the summer and the cold out in the winter. Of course, insulation and doors contribute to draft but the windows play a major role as well. Durability – You don't want windows you're going to have to replace the following year or even 7 years down the line.
If you live in an area with extreme weather conditions, it's best to wait until the spring or fall to avoid any damage that could be caused by installing replacement windows during extreme heat or cold. If you're working within a tight budget, waiting until the end of the year may be your best bet.
Home windows have a lifespan of 15-20 years. Once they reach this age, the seals start to weaken or fail, which leaves you open to drafts and water seepage. In addition, single-pane windows were the standard 15+ years ago. These windows lack insulation and are not as energy efficient as modern double-pane windows.
Builder grade windows are inexpensive and made from low grade materials as opposed to a higher quality or custom grade that are more durable to last. They are a popular choice because they save builders money.
High quality windows offer a ton of value
There are other benefits too, like using fiberglass that doesn't rust, chip, rot, peel, or warp. New windows will be weathertight and you'll never have to worry about rain or other elements getting in through cracks in your window's frames.
Vinyl Windows are Different than Other Options
In extreme weather conditions, the possibility of discoloration exists. Since these windows can't be repainted, the entire window must be replaced. Also, real estate experts say vinyl window replacements don't add as much value to a home as other options.
Vinyl windows lack strength and density because manufacturers use the minimum amount of material. Over time, vinyl frames can loosen due to expansion and contraction, which then leads to insulation problems and possible window damage. Vinyl window frames with more density may have reduced glass area.
Vinyl windows, on the other hand, do not absorb water and are not prone to rotting. These windows, when installed properly, can go for long periods of time without maintenance. So in general, the answer is that vinyl windows will last longer than wood windows.