Teutonic Series products deliver much better STC ratings than traditional aluminum products

Sound Transmission Ratings

The ability to block or limit the amount of outside noise coming into a commercial building is becoming more of a priority for architects and designers. This is true for all segments of commercial construction – especially schools, health care facilities, retail and office spaces where occupant health and well-being are priorities.

Sound Transmission Class, or STC, is the rating scale used to evaluate how well partitions within a building – in this case windows and doors – block the amount of sound that passes through.

Kolbe Teutonic® Series products deliver much better STC ratings than traditional aluminum products often found in commercial settings. This is achieved through the use of thick-walled frame and sash extrusions, as well as the gasket system that is part of the compression seal technology. Plus, installing laminated or triple pane glass can further enhance the sound-blocking performance of these windows and doors.

Kolbe had a variety of glass types tested to achieve a wide range of STC values. This provides flexibility to the architect or designer, who must balance sound control needs with energy efficiency standards and aesthetic goals.

Product Glass Configuration STC OITC Test Reports
Tilt-Turn Window
  1" IG (standard) 35 29 ESP17526P-19
  Lami 49 (1" IG with 1/4" Lami) 37 29 ESP17526P-20
  Lami 48 (1" IG Impact Resistant Lami Glass) 37 33 ESP17526P-21
  Lami (1-3/8" IG with [2] 1/4" Lami Glass Panes) 43 34 56604.01-113-11
Fixed Window
Direct Set 1" IG (standard) 28 23 ESP17526P-16
Direct Set Lami 49 (1" IG with 1/4" Lami) 36 29 ESP17526P-7
Direct Set Lami 48 (1" IG Impact Resistant Lami Glass) 36 31 ESP17526P-22
Direct Set Lami (1-3/8" IG with [2] 1/4" Lami Glass Panes) 39 28 A1834.01-113-11
Tilt-Slide Door
  1" IG (standard) 31 24 ESP017525P-7
  Lami 49 (1" IG with 1/4" Lami) 36 29 ESP017525P-14
  Lami 48 (1" IG Impact Resistant Lami Glass) 36 32 ESP017525P-13
Outswing Door
  1" IG (standard) 30 25 ESP017293P-33
  Lami 49 (1" IG with 1/4" Lami) 36 30 ESP017293P-32
  Lami 48 (1" IG Impact Resistant Lami Glass) 36 32 ESP017293P-31
Sliding Patio Door
  1" IG (standard)  29 23 ESP025396P-16
  1-3/8" Triple Pane IG  28 22 ESP025396P-18
  Lami 84 (1" IG with 3/8" Lami)  32 28 ESP025396P-17
  Lami 82 (1" IG with 1/4" Lami)  31 26 ESP025396P-20

STC = Sound Transmission Class
OITC = Outdoor-Indoor Transmission Class
IG = Insulating Glass