Why do vinyl windows get a bad rap yet more than 60% of the people in the U.S. buy them?
Assumption #1- all vinyl windows are just cheap windows. (false)
Fact- most vinyl windows are cheaply made and lack the higher quality materials, components, and type of design and construction that much better vinyl windows are made out of.
I know of high quality vinyl windows that have better performance ratings and come with a better warranty than 95% of what's currently being sold in the U.S..
With that being said finding a much better vinyl window than your typical run of the mill low-end to mid-grade at best is a bit like finding a four leaf clover in your back yard, as they are far and few between.
Vinyl (can be) an awesome material when manufactured the right way but the problem is most of the vinyl here in the U.S. isn't made well because of two reasons.
1. Better grade plastics cost more.
2. Most customers in the market for windows already think all vinyl's pretty much the same so why educate the customer?
Make them all cheap and let the client think the last sales persons vinyl window is just as good as the next company you have out.
Unfortunately consumers in the market for windows in the U.S. have maybe a 5% -10% chance of coming across a better than average vinyl grade window (and I'm talking about 100% vinyl).
Not vinyl clad (which is a wood window), or the composite window on the market which is 60% vinyl/40% recycled wood fibers.
The pictures I've posted below are common problems with vinyl windows that are not using better grades of plastics and/or not adding sufficient amounts of titanium dioxide to the vinyl (and it's usually not doing either one) that leads to the results you see in the pictures.
Vinyl made correctly doesn't have these issues for the most part, but their are exceptions that come into play.
Listed in my "New 2019 "Interactive" pdf book" are some of the additional questions you need to ask your sales people when they come out to do their presentations.
Remember, a sales person can tell you stories all day long but at the end of the day, where is the specific wording and details in the companies brochure?