Prefabricated Curbs - Skylights

Prefabricated Curbs

Economical and Convenient Alternative to Site Built Curbs

Wasco’s prefabricated curbs are fully assembled to reduce installation time and cost, with no chance of missing parts and no field assembly. Available in insulated and non-insulated models as structural or non-structural.

Choose steel (WRC6 or WRC3) or sheet aluminum (CO) construction.

Models WRC6 and WRC3 curbs come standard with an impact tested security screen that is fabricated in a 6″ x 6″ welded grid pattern using 3/16″ cold-rolled galvanized steel rod, with an optional 4″ x 4″ grid for California. The optional structural 14 gauge steel curb eliminates the need for costly structural reinforcement. WRC3 curbs are constructed with fiberglass insulation (R-value >5).

Model CO thermally enhanced curbs are constructed with 1-1/2″ rigid insulation (R-value 5.8).

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  • Thermally Enhanced Curb (CO)
  • Steel Curb, Insulated (WRC3)
  • Steel Curb, Non-Insulated (WRC6)
  • Model CO Prefabricated CurbInstalls above roof deck
  • Thermally broken sheet aluminum
  • Interior aluminum liners painted white, custom colors available
  • 1-1/2″ rigid insulation
  • Standard 12″ or 16″ curb height, custom heights available
  • HS adhesive clamping at corners
  • 2×2 wood nailer
  • R-value 5.8
  • Model WRC3 Prefabricated CurbInstalls above roof deck
  • 14 gauge structural steel or 18 gauge
    non-structural
  • Optional 14 gauge spans between joists up to 6′ OC with no additional framing required
  • Interior steel liners painted white
  • 1-1/2″ thick 3lb density fiberglass insulation
  • Full height mitered and welded corners
  • Factory installed 3/16″ security grid at 6″ OC with optional:
    • No security screen
    • California grid – 3/16″ security grid at 4″ OC
    • Burglar bars – 8×8 grid, 1/2″ diameter steel
  • 2×2 wood nailer
  • R-value >5
  • Model WRC6 Prefabricated CurbInstalls under roof deck
  • 14 gauge structural steel or 18 gauge
    non-structural
  • Optional 14 gauge spans between joists up to 6′ OC with no additional framing required
  • Interior steel liners painted white
  • Curb heights of 9″, 12″, 14″ and 16″
  • Full height mitered and welded corners
  • Factory installed 3/16″ security grid at 6″ OC with optional:
    • No security screen
    • California grid – 3/16″ security grid at 4″ OC
    • Burglar bars – 8×8 grid, 1/2″ diameter steel
  • 2×4 wood nailer
  • R-value >5