Replacing patio door and window, new construction or retrofit?
I have 4 sliding patio doors and one horizontal sliding window. Is it better to use new construction or retrofit?
Different dealers gave me different suggestions. I got confused. So which one is better for my situation? My current windows are aluminum ones. It's a 1970 house.
I decided on Milgard vinyl. But one salesman tried to convince me to buy anlin. She said with similar price as Milgard, Anlin has triple coating and argon gas. My main concern is smooth sliding. I am living in the bay area between San Francisco and San Jose. I don't think Argon gas is that important. Am I right?
Thank you very much.