Over the past 25 years, makers of skylights and
roof windows have standardized their products
so that most offer the same basic sizes and configurations.
Glazing options have also become standardized
— most skylights these days are glazed with argonfilled,
low-e glass — so R-value is less of a distinguishing
feature than it used to be.
As the differences among brands have diminished,
skylight manufacturers eager for more market share
have expanded into specialty coatings and flashings,
increasingly sophisticated remote-control devices, and
accessories like hidden motors and high-efficiency
hand cranks. The once time-consuming process of getting
custom skylight sizes has given way to responsive
companies offering one- or two-week turnaround for
any size skylight. Let's