White Seraya, Beech, or Obeche slats are sealed inside the IGU cavity, delivering directional solar control, partial through-vision, and the natural warmth of wood grain, with no exterior maintenance ever required. Lock-out angle 35 degrees. Available up to 137 by 178 inches.
OKAWOOD encloses precisely cut hardwood slats inside the hermetically sealed cavity of an insulating glass unit. The wood never contacts air, weather, or UV directly. The slats are angled to redirect direct solar radiation while transmitting diffuse daylight, a passive shading system that looks like nothing else in architecture.
White Seraya (cream, fine grain), Beech (blonde, tight grain), and Obeche (golden honey, open grain) are each available in the same horizontal-slat IGU configuration. Species choice shifts the visual tone and reflectance of the panel; the underlying solar performance is tuned by slat density and angle, not species alone.
Horizontal slats block solar radiation arriving above a 35-degree angle from horizontal, the steep summer sun, while allowing low-angle winter daylight to pass. SHGC ranges from .11 to .28 depending on sun angle and panel orientation. No motorized components. No maintenance cycle. The slats work passively for the life of the building.
From the exterior, OKAWOOD reads as a warm wood surface. From the interior, diffuse daylight enters and silhouettes of the exterior world remain faintly visible. Privacy is asymmetric: much harder to see in from outside than out from inside, a quality useful in healthcare, hospitality, and workplace applications.
The wood slats are precision-cut and fitted inside the sealed IGU cavity during fabrication. They never contact outdoor air, humidity, or UV radiation directly. No painting, oiling, or replacement is required for the life of the unit, unlike any exterior wood cladding system. The factory-sealed cavity also functions as the argon or krypton fill chamber for thermal performance.
Daylight filtering through OKAWOOD takes on the warm character of the wood species. The striped shadow pattern of the slats drifts across interior surfaces through the day. At Wiesbaden Fachhochschule, classroom occupants experience dappled daylight across desks and glulam structure, warm and oriented without glare. An effect that no coating or film produces.
White Seraya, Beech, and Obeche are each enclosed in the same horizontal-slat IGU construction with the same framing envelope and thermal performance. Species choice is an architectural decision about tone, grain, and how the wood reads against the surrounding facade material.
SHGC and U-values are reference figures from OKALUX published data. Project-specific values vary with species density, slat spacing, and IGU build-up.
All three OKAWOOD species share the same IGU construction, framing envelope, and thermal performance range. Species selection is an architectural decision about visual tone and grain character, not a performance tradeoff.
OKAWOOD is specified where the visual warmth of wood needs to perform: solar control on a university facade, material richness in a healthcare entry, or envelope identity on a civic building. Maintenance-free for the building life.
Patient-facing and clinical environments benefit from OKAWOOD's combination of solar control and visual warmth. The wood tone humanizes large-area glazing while the sealed IGU construction meets healthcare hygiene requirements: no exterior surface to clean, paint, or replace.
University facades specified with OKAWOOD achieve passive solar control across multi-story elevations without exterior shading devices or operable components. Aalen Fachhochschule demonstrates OKAWOOD as a complete envelope system: horizontal-rib panels across three floors, combined with storefront-glazing entry bays.
Laboratory buildings require controlled daylight without glare and solar gain on occupied workbenches. OKAWOOD's 35-degree horizontal lock-out angle eliminates direct summer sun while the sealed IGU construction introduces no condensation or maintenance risk into the clean interior environment.
Four verified OKAWOOD installations across education, healthcare, civic, and cultural typologies. Imagery via OKALUX product library.
Major hospital expansion on the Upper East Side with OKAWOOD on the primary patient-facing facade. The warm wood-rib glazing reads as humanizing material warmth against the clinical volume, visible from the FDR Drive at night as a lit wood-grain surface. HOK + Pei Cobb Freed.
University laboratory building with OKAWOOD wrapping two full facades. Horizontal wood ribs at building scale: solar control without exterior shading devices.
Public library and community centre with OKAWOOD on glazed envelope. The wood-rib panels deliver solar control and material warmth appropriate to a civic building serving a residential community.
University campus building with OKAWOOD across the west wing elevation. Horizontal ribs at building scale: solar control and facade identity in one system.
The hardwood slat grid is fabricated to tolerance and enclosed inside the hermetically sealed IGU cavity before the unit is assembled. The wood never contacts outdoor air, humidity, or UV radiation directly. The IGU cavity is the wood's permanent environment. No refinishing cycle, no replacement, no exterior maintenance access required.
OKAWOOD fits standard curtainwall and storefront framing systems. The wood slat grid adds no significant frame depth beyond a conventional double-pane unit. Consult R. Suare for project-specific framing coordination and maximum span confirmation.
OKAWOOD is optimized for vertical facade applications. For overhead and non-standard orientation inquiries, contact R. Suare. SHGC and U-values above are reference figures from OKALUX published data. Project-specific values vary with species density, slat spacing, and IGU build-up.
Brochure, technical data, dimensions and tolerances detail sheet, and tender specification for OKAWOOD timber-grid glazing.
We'll send samples, species-specific spec sheets, and a project-matched SHGC and Ug recommendation within two business days. For design-phase support, schedule a lunch and learn or send your solar study for review.
