The EPS insulation prevents back loss and the panel does not require additional insulation, however added insulation between the ceiling joists increases the overall system performance.
1½" EPS board, added to the interior side of the framing, allows for better control of interior environment: maximized insulation (R-value 6.5) and minimized sound transmission. With a STC sound rating of 40, ray | magic panel itself provides more sound insulation than a 4" exterior wall which provides only a 34 STC sound rating (wood framing with fiberglass batt insulation).
When installed, ray | magic panels can be sealed together using polyurethane spray along the expanded polystyrene edges to create an airtight seal. This helps to maintain a low leakage envelope and high indoor air quality. EPS is also resistant to insects, including termites, is stable and retains its physical proprieties over time. EPS is 100% recyclable.
ray | magic EPS board is Class A fire rated (ASTM E84).
Optimum use of space
No ducting, no soffits because the ray | magic active gypsum panels use only 40 to 70% of the ceiling surface area, plenty of room is left for lighting, sprinklers and other trades. Less expensive "blank" panels are provided to match the ray | magic active panels. Over joists or between beams…your choice
ray | magic is available in 4' x 8' boards for standard wood frame or dropped ceiling installation or the special beam product that can be easily cut to match the space between beams.