Structural Thermal Break connections increase the overall effectiveness of the Thermal Break system they are used in conjunction with.,
STB-1 Thermal Break washers and bushings can be used on the warm face of the structure, and including a thermal break at the bolt connection will reduce heat loss an additional 4% per bolt, depending on the wall assembly connection. Without these thermal break solutions, condensation can occur on the bolt heads which can develop into damp and mold issues.
Recommended Thermal Washer and Thermal Bushing Sizes
| Bolt Size | Washer | Washer | Bushing | Bushing |
|---|---|---|---|---|
| Diameter - Inches / MM | OD - Inches / MM | ID - Inches / MM | OD - Inches / MM | ID - Inches / MM |
| 3/16" (M5) | 9/16" (14.29) | 1/4" (6.40) | 1/2" (12.7) | 1/4" (6.40) |
| 1/4" (M6) | 3/4" (19.05) | 5/16" (7.94) | 9/16" (14.29) | 5/16" (7.94) |
| 5/16" (M8) | 7/8" (22.23) | 3/8" (9.53) | 5/8" (15.88) | 3/8" (9.53) |
| 3/8" (M10) | 1" (25.4) | 7/16" (11.11) | 11/16" (17.46) | 7/16" (11.11) |
| 7/16" (M12) | 1 - 1/4" (31.75) | 1/2" (12.70) | 3/4" (19.05) | 1/2" (12.70) |
| 1/2" (M12) | 1 - 3/8" (34.93) | 9/16" (14.29) | 13/16" (20.64) | 9/16" (14.29) |
| 9/16" (M14) | 1 - 1/2" (38.10) | 5/8" (15.88) | 7/8" (22.23) | 5/8" (15.88) |
| 5/8" (M16) | 1 - 3/4" (44.45) | 11/16" (17.46) | 15/16" (23.81) | 11/16" (17.46) |
| 3/4" (M20) | 2" (50.80) | 13/16" (20.64) | 1 - 1/16" (26.99) | 13/16" (20.64) |
| 7/8" (M22) | 2 - 1/4" (57.15) | 15/16" (23.81) | 1 - 3/16" (30.16) | 15/16" (23.81) |
| 1" (M25) | 2 - 1/2" (63.50) | 1 - 1/16" (26.99) | 1 - 5/16" (33.34) | 1 - 1/16" (26.99) |
The typical thermal break system includes 2 thermal break washers, 2 thermal break bushings and 4 USS washers per hole as shown in the image above.
Additional Thermal Break and Vibration control products we stock in Canada & USA for fast fabrication and shipment:
Thermal Isolation Bushings, Non-Conductive Washers, Bolt Insulation Sleeves, Thermal Break Washer Kit, Fabreeka Washers, Plastic Isolation Bushings, Dielectric Bushing, Bolt-through thermal isolation, fastener sleeve, thermal bridge bolt kit, vibration isolation washer, Thermal Sleeve, Bolt Isolator, Dielectric Shoulder Washer, Thermal Break Shim Kit, Non-metallic Fastener Collar, Cold Bridge Bolt Sleeve, Insulated Fastening System.
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