Originally bought all Weathershield windows and doors when we built our house. Added on a few years later and, again, used all WS.
Then windows started to fail. Have had to replace numerous windows with hardware issues, loss of gas, etc.
The capper was when I called to order yet another set of sashes I got a "small order" charge. When I questioned it, they said they added that to all homeowner sales. In other words, if you are a loyal customer and used the Weathershield product, you get an uncharge for replacing their faulty equipment.
They held me hostage once, but never again will I buy a Weathershild product.