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Products > Rigid Foam Insulation Framing > ThermaFast® J-Track

ThermaFast® J-Track


ThermaFast® J-Track is a component of TSN's ThermaFast Rigid Insulation Framing System, used in conjunction with ThermaFast Z-Track and Corner Angle to secure rigid foam insulation simply and quickly. 1" thermal tape comes preinstalled to each track.


  • Wide flanges for increased target area for screws when installing sheathing or alternative finishes
  • Thermal tape pre-installed for universal application
  • Mill-certified high strength steel and added galvanized coating layer
  • ThermaFast J-Track utilizes typical screws to attach rigid foam insulation.  Specialty fasteners with washers are not required.
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Product Information


Metal:ASTM A1003/A1003M Structural Grade 50 (340) Type H, ST50H (ST340H): 50ksi (340MPa) minimum yield strength, 65ksi(450MPa) minimum tensile strength, with ASTM A653/A653M G90 (Z275) hot dipped galvanized coating. Available in 33mil minimum thickness (20 gauge, 0.0346” design thickness) or 54mil minimum thickness (16 gauge, 0.0566” design thickness).

Thermal Tape: Thickness 1/16”, Density 15 lbs/ft3 (ASTM D-1667), Thermal Conductivity k-factor 0.3 (ASTM C-518)

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ThermaFast® J-Track Product Profile
Section Leg Length Rigid Foam Insulation Depth Return Lip Gauge Design Thickness Min Steel Thickness Inside Bend Radius Weight
(in) (in) (in) (ga) (in) (in) (R) (lbs/ft)
100JT-33, 50ksi 2.25 1.0 1.0 20 0.0346 0.0329 0.0764 0.49
150JT-33, 50ksi 1.5 0.54
200JT-33, 50ksi 2.0 0.60
300JT-33, 50ksi 3.0 0.71
400JT-33, 50ksi 4.0 0.82
100JT-54, 50ksi 2.25 1.0 1.0 16 0.0566 0.0538 0.0849 0.80
150JT-54, 50ksi 1.5 0.89
200JT-54, 50ksi 2.0 0.99
300JT-54, 50ksi 3.0 1.17
400JT-54, 50ksi 4.0 1.35
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ThermaFast® J-Track Order Information
Section length/pc qty/skid lbs/ft lbs/skid
100JT-33, 50ksi 12' 200 0.49 1,302
150JT-33, 50ksi 0.54 1,422
200JT-33, 50ksi 0.60 1,566
300JT-33, 50ksi 0.71 1,830
400JT-33, 50ksi 0.82 2,094
100JT-54, 50ksi 12' 200 0.80 2,046
150JT-54, 50ksi 0.89 2,262
200JT-54, 50ksi 0.99 2,502
300JT-54, 50ksi 1.17 2,934
400JT-54, 50ksi 1.35 3,366
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ThermaFast® J-Track Section Properties
Section Mxa Mya
(kips-in) (kips-in)
100JT-33, 50ksi 0.07 0.10
150JT-33, 50ksi 0.10 0.28
200JT-33, 50ksi 0.10 0.46
300JT-33, 50ksi 0.13 0.84
400JT-33, 50ksi 0.17 1.24
100JT-54, 50ksi 0.26 0.31
150JT-54, 50ksi 0.32 0.80
200JT-54, 50ksi 0.37 1.37
300JT-54, 50ksi 0.45 2.96
400JT-54, 50ksi 0.47 4.66
Table Notes
  • Mxa is the ASD moment capacity in the gravity load direction based on 24” o.c. fastening to stud max.
  • Mya is the ASD moment capacity in the wind load direction based on 24” o.c. fastening to stud max.
  • Attach track with minimum (1) #10-16 self-drilling screws to each stud. (2) screws may be required for high design wind pressures (higher than 30 psf service level)
  • Refer to project specification and/or architectural sections for wall assembly details related to fire and acoustical performance as well as water resistance.

TSN's Product Catalogs are an essential resource for the design of cold formed steel.  Developed by Engineers, the catalogs contain design data for members connectors, and fasteners.

ThermaFast® J-Track and the rest of TSN's Rigid Insulation Framing Products can be found in the following Catalogs:

For a full list of our product catalogs, specification sections, inspection checklists, and research reports please click here.