Most windows were not installed correctly. The installer did not follow Andersen’s installation guide during the install. They were not squared, plumbed, leveled or shimmed correctly. All had to be taken out and re-installed.
As one can see below, the installer did not even bother to cut the OSB board from the window frame so that the window would go up and down correctly. This caused so much dust and mess on the inside and outside of the house!
And of course, once the windows were re-installed the best that they could be done, the siding contractor had to come back out to replace and fix the James Hardie planks/siding.
Here is the installation guide for Andersen’s windows:
installationguide-0005261