I have skylights in my home that are 27 years old. (Roto brand?) The glass in some of the lights are foggy or getting foggy. Some of the gasket material is torn/ripped.
I am considering installing new Velux products. My original plan was to replace the panes but they are difficult to take apart and clean the adhesive/silicone off of the frames. If something breaks, I can't get replacement parts.
I am wondering how much heat I am losing; would it be worth the expense to replace them. I live in New England. Two of the lights are in a room that has radiant heat.