I STAND BEHIND THE ALLSIDE WINDOW . IF YOU HAVE A PROBLEM WITH INSTALLATION,DO NOT EXPECT THE MANUFACTURE TO WARRANTY SOME ELSES INSTALATION-HACK JOB! THEY ONLY WARRANTY THE PRODUCT. I HAVE BEEN WORKING WITH ALLSIDE FOR 4 YRS. AND THEY ALWAYS TAKE CARE OF WARRANTY ISSUES. IM SORRY FOR WHAT HAS HAPPEND IN YOUR SITUATION BUT I TRUELY DO FEEL IT WAS IMPROPER INSTALLTION. WHAT YOU NEED TO DO IS FIRST CONTACT THE BETTER BUSINESS BUREAU THEN AN ATTORNEY MAYBE.