Windows in my house are only 4 years old and one s...

Windows in my house are only 4 years old and one section is defective. I called PGT and they said because I bought the house last year and was not the owner who had the windows installed their so-called life time warranty is not valid. She told be I would have to pay to replace their defective product. Sure I will, but I ll be paying Anderson or Pella not these crooks.