Where wood-clad brings durability to the exterior, [Wood+] brings timber all the way through, custom milled frames in species including oak, with interior and exterior profiling suited to historic preservation and contemporary architecture alike. Frame depths from 68mm to 92mm allow the system to be matched precisely to the project, with multiple air seals and argon-filled glazing available for high-altitude applications. The result is a window with the warmth and character of natural wood, built to perform.
The [Wood+]92 Triple Pane All-Wood
The vast majority of clients specify the triple-pane [Wood+]92, and for good reason. Three panes of glass, triple air seals, and a 92mm frame deliver thermal performance that rivals certified Passive House assemblies, with the precision, feedback, and tolerances that the most discerning homeowners, architects, and builders expect. Dual-pane configurations in 68mm, 78mm, and 88mm frame depths remain available for projects where the application calls for it.
Wood Species and Colours
Interior timber is available in European White Pine, Oak, Meranti, Larch, and Teak, with over 300 paint and stain variations to match any architectural palette. Exterior profiling and hardware finishes can be specified to complement or contrast the interior timber selection.
All-Wood Windows for Architects, Builders, and Discerning Homeowners
All-wood windows and doors remain the benchmark specification for projects where authenticity of material matters. Whether the project is a carefully detailed historic preservation, a timber-frame mountain residence, or a contemporary home where the warmth of natural wood is central to the design intent, [Wood+] delivers a result that no composite or clad system can replicate.
EPOC works directly with architects and custom builders across the United States to specify all-wood window and door packages from first opening dimensions through final installation. Every unit is custom fabricated, no standard sizes, no stock profiles, with lead times and continental US logistics managed from our base in Steamboat Springs, Colorado.
All-Wood Window Performance Data
[Wood] available from Uw from 0.26 Btu/h·ft²·°F
[Wood+] available from Uw from 0.16 Btu/h·ft²·°F
Swisspacer Advance "warm edge" and Ultimate available. A black spacer bar is standard as this detracts the eye the least. White and silver spacer bars are also available as standard.
The standard Solar Heat Gain Coefficient is ~0.52 and can vary between 0.30 and 0.62 depending on exposure.
A primary benefit to European glass is the low Iron content and great visual clarity. The heavy gauge glass does not show similar waviness similar to American glass, but also avoids green tinting with low iron content.
Standard and tempered glass are most common with impact rated glass also available. Impact glass is great by both reducing 99% UV transmittance and has varying levels of burglar resistance. Obscure and ornamental glass is a great solution for privacy and decoration.
Air permeability ratings are class 3 EN 12207 for [Wood] and class 4 EN 12207 in the [Wood+] lines. Windload resistance ratings are Class 4 EN 122210.