Hierarchy of Materials

  1. Group 1 facilities may have more refined detailing than Group 2 and Group 2 may have more definition than Group 3.
  2. Anodized aluminum metal panels may be used in Groups 1 – 3. Metal siding is acceptable for Group 3 facilities and inconspicuous areas of Group 2 facilities.
  3. Design walls using a hierarchy of primary and secondary wall materials with detailing appropriate for the climate region and use group.
  4. Limit the number of primary wall materials on a base with each material a consistent color following Installation Facilities Standards (IFS).
  5. Use materials and detailing not subject to excessive weathering. Provide wall accents consistently throughout a base.
  6. Use materials in neutral colors, integrally colored materials and factory-finished metals.

Wall systems must be designed for life cycle cost effectiveness and comply with Installation Facilities Standards (IFS) for Facility Groups. Walls shall be designed and constructed with durable exterior finishes appropriate for the climate region with detailing that will not show excessive weathering or wear during its life cycle for the specific application. Materials must withstand operations and activities and must tolerate periodic cleaning. Only low-maintenance materials are permitted.

Use of secondary accent materials to complement primary material is encouraged to create a professional-quality appearance and to reduce costs. For typical applications, the use of materials should not be extravagant and increase costs.

All secondary elements of a wall system such as accent materials, relief, lintels, window and door openings, downspouts, joints, etc., shall be coordinated with the visual and physical characteristics of the primary wall material.


Following the directives of UFC 1-200-02, evaluate the life-cycle cost effectiveness of passive building components that provide shading, such as wall-mounted fixed shading. Wall systems should enhance indoor environmental quality and must promote thermal comfort, moisture control and daylighting.

Wall materials and detailing should emphasize resource efficiency, respond to the local climate and comply with Base standards. Materials shall be appropriate for the specific exposure or orientation of the wall. Material specifications for walls should include consideration of environmentally preferable products, products with recycled content and biologically-based products.

UFC 1-200-01 General Building Requirements

UFC 1-200-02 High Performance and Sustainable Building Requirements

UFC 3-101-01 Architecture