Sorpetaler has been building Passivhaus and custom-made wooden framed German and European windows, doors since the middle of the last century in the USA and Germany. http://www.sorpetalerusa.com

1. custom wood doors
http://www.sorpetalerusa.com/

2. Sorpetaler's longevity since the company's founding in 1880 is
sustained by a cadre of technically trained Master Carpenters,
machinists, and shop personnel with years of know how.

3. • Triply laminated solid wood. Deep penetrating factory finishes
applied to wood surfaces before glazing, hardware, and weather
stripping. Engineering principles behind sash and frame profiling.
Traditional mortice and tenon joinery. Dowelled ship lapped
muntin bars. State of the art hardware components. Result: permit
peak thermal, acoustical, and security performance.

4. Sorpetaler's multiple Design Series speak to contemporary and
traditional preferences for wood and metal clad wood windows –
whether glass house or post and beam Sorpetaler compliments.

5. Thermal performance has always been
prioritized. Our highest rated fenestration
offers an R value of approximately 11, thereby
exceeding levels set by ASTM and AAMA
specifications.

6. Sorpetaler provides extremely fast lead times compared with other custom
millwork shops foreign or domestic. Manufacture is typically 5‐7 weeks.
Shipping to the East coast adds 3 weeks; to the West coast 5‐6 weeks.

7. • Sorpetaler has promoted FSC
certified woods since their
inception in the 1990s. Sorpetaler
sources timber from responsibly
managed forest lands, is a net
producer of wood briquettes from
wood waste, and continually
monitors alternate species and
technologies that leave the lightest
footprint for our heirs.
http://www.sorpetalerusa.com/