Roof Windows Page - 5

Remember the light area (glass area) should represent at least 10-15% of the floor space in the room where you're planning to install the roof window.

Available in the Rainbow Collection

Built-in Thermal Performance

In Allseason-PLUS glass, a vacuum is created, then filled with inert Argon gas to improve insulating performance. Low-E coatings also are applied to help prevent the entry of solar heat, and as an overall protection against the elements, thus increasing shading coefficient.

To select the right glass for the roof window you're installing, choose from Roto's high-performance glass types and glazing options. The result is always crisp, clear brightness and maximum thermal performance for all your applications.

Roto Allseason-PLUS glass cuts summer-time heat gain from direct transmission, absorbed solar radiation, and air- to air- heat gain from high outdoor temperatures. It also reduces wintertime heat loss from the thermal radiation from glass surface to glass surface, and from the conduction of heat through molecules of air. With its Low-E coatings and Argon-filled airspace, Roto roof windows provide twice the performance of standard, two-pane insulating glass.

Clear Tempered Non Low-E glass, available on selected Hilight models only, is your most economical glazing option. It remains clear and bright throughout the life of the window.

Allseason-PLUS Tempered, Low-E, Argon-filled glass offers excellent insulation properties, with better shading coefficient than clear non Low-E Argon-filled.

Roto roof windows are constructed with two panes of glass separated by an inorganic metal spacer. The space between the panes is sealed to gas-tight specifications to eliminate moisture and hydro-carbon transmission. The spacer is designed to absorb moisture and help prevent fogging.