If you are thinking of using Landmark, think again. I did everything you are suppose to before we purchased windows from them 3 years ago, internet search, talk to people never found anything bad about them, until I found out they have changed their name on more than one occasion, making web searches a waist of time. They made a mess of our home, installed the wrong windows, showed up when they were not suppose to be here and never showed up when they were suppose to. They have just come back again today to fix a leak that I have been calling them about for 4 months. They have been here at least 10 time to fix problems that are not going away and it takes me months to get them here every time. And today I see a note on the servicemans clip board telling him to tread lightly with me because I keep complaining!! I have a 2 inch thick file of what has been happening and over 400 pictures of all the problems...they offered me $500 to shut me up!!! $500 for $20,000 worth of nightmare windows. I hate my windows, they do not close properly, they are less energy efficient then the old windows I replaced, and it is almost impossible to get them out here to fix anything without threatening them with a lawyer or the BBB. Again if you are looking at buying new windows I would strongly recommend you go elsewhere.