Can't understand why they have so many good reviews. Our experience has been terrible.
From the beginning
1 - they delivered the wrong material (material delivered to the wrong job)
2 - material arrived scratched and scuffed . . . when we brought it to their attention they basically shrugged their shoulders and installed it anyway.
3 - we paid extra to have a black exterior and a white interior . . . we got a black exterior with white highlights, a white roof, brown skylights and a patio door that the exterior was poorly "painted" in black but with white spots.
4 - the fit and finish was terrible with gaps of up to 1/8 inch and glue showing in many places.
5 - they cut out the center of one of the roof trusses in the house to put in the roof beam for the sunroom
6 - our four season sunroom has un-insulated air gaps between the house and the sunroom
7 - while the installers cleaned up each day and left things generally in a neat and tidy fashion they also took some materiel away that likely should have been used in the construction of the sunroom.
8 - we had issues with how they were building the room (not according to the plans submitted for the building permit) and the lack of proper support for the wall and roof support beam.
9 - conversations with one of the owner's, a manager, the installers, and their customer service have all been a waste of time as they either pass the buck, tell you it will all be fine when they are done or simply ignore you and not respond.
And I could go on. but sufficient to say that this has been the worst experience we have ever had in over 50 years of home ownership with many many renovations, additions, upgrades etc.