Guardian has added six new colours to its range of low-emissivity SunGuard Advanced Architectural Glass products. SunGuard AG 50 and SunGuard Royal Blue 40 are available on there different float glass substrates for a variety of appearance options. SunGuard AG 50 is a low-E coating with just enough reflectivity to provide a crisp, uniform appearance and comes in light silver, silver grey and green. The coating is spectrally selective, allowing high amounts of visible light into a building whilst minimising solar heat gain. SunGaurd Royal Blue 40 combines low-E performance with a blue appearance that comes in 3 shades: royal blue, blue grey and aquamarine. On clear glass it gives light inside the building a more neutral appearance.