Start with the designer notes of the issued Section 09 24 23: confirm that the elevations and wall sections show where stucco and metal lath go, the stud sizes and framing details behind them, every control joint, and a hanger detail wherever stucco is suspended, and that each wall type names its base, framing with sheathing, concrete, or masonry. Then trace one wall from grade to parapet, through one window, checking that the sheathing, air barrier, paper-backed lath, accessories, lintel and flashing laps, joints, and finish coat drawn match the options kept in the section, and that the weather barrier, flashing, framing, and sealant work it relies on sits in the sections that specify it.
Assemble the review package
Gather the exterior elevations with the stucco areas and control joint layout, the wall types and wall sections, the head, jamb, and sill details at windows, doors, and louvers, the base of wall details at grade, slabs, and paving, the parapet, coping, roof-to-wall, and soffit details, the reflected ceiling plan for exterior soffits and any suspended stucco ceiling with its hanger detail, the building expansion joint locations, the structural wind criteria and the framing or cold-formed steel drawings, the energy compliance documents and any continuous insulation shown behind the stucco, the finish schedule with the stucco texture and color, the design analysis with the ASHRAE climate zone and the environmental severity classification (ESC) under UFC 1-200-01, and the issued Section 09 24 23 with Sections 09 22 00, 05 40 00, 07 27 10, 07 60 00, 07 92 00, and 09 06 00. Follow one wall from its base to its parapet, through one opening, before assuming the other elevations are detailed the same way.
WBDG publishes UFGS 09 24 23: Cement Stucco as a public guide-specification reference (accessed November 5, 2026). Use your project’s issued specification and amendments for the actual comparison; the guide specification does not automatically govern your project. The checklist below is an original suggested review workflow, not a reproduction of the UFGS requirements.
Eight checks to run against the issued set
Use one record per location or system. The CSV contains the same eight prompts plus fields for source revisions, observed evidence, the review owner, the decision, and closure references.
| Check | Sources to compare | Question to resolve |
|---|---|---|
| What the drawings must show | Lath, Steel Framing, Control Joints, and Hangers designer notes + elevations, wall types, wall sections, and reflected ceiling plan | Do the drawings clearly indicate where metal lath is required, give the stud sizes, framing dimensions, and framing details, show every control joint, and include a detail of splayed and countersplayed hanger wires wherever stucco is suspended, as the notes say they will? |
| Base and framing behind the stucco | Lath, Steel and Wood Supports, On Concrete and Masonry, Preparation of Surfaces, Steel Framing, and Framing articles + wall types + structural wind criteria + Sections 09 22 00 and 05 40 00 | Does each wall type say whether the stucco goes over framing and sheathing or over concrete or masonry, with metal reinforcement on concrete and masonry only where the drawings or local practice call for it, as the Lath note describes, does the framing behind exterior stucco fall within the scope of Section 09 22 00, which the Steel Framing article refers to and which sends load-bearing framing to Section 05 40 00, and is that framing designed to the deflection criteria the Steel Framing note ties to UFC 3-301-01 wind loads? |
| Sheathing, weather barrier, and lath backing | Steel and Wood Supports article + Metal Lath article (paper backing) + Lath article (laps and shiplapped joints) + Section 07 27 10 + wall sections | Do the wall sections show the sheathing and air barrier in place before the lath, as the Steel and Wood Supports article requires, and paper-backed lath with the paper lapped paper to paper and horizontal joints shiplapped, and is the air barrier in Section 07 27 10 a product compatible with stucco and the lath paper, its vapor permeance consistent with the wall’s vapor design, with any further water-resistive layer the architect intends specified somewhere? |
| Control and expansion joints | Control Joints article and its designer note + Lath article (lath interrupted at control joints) + On Concrete and Masonry article (casing bead, control joint, or reinforcement where wood adjoins masonry) + elevations + building expansion joints + Section 07 92 00 | Is one control joint option kept, joints as indicated or joints set by panel area and dimension, and if the joints are as indicated, do the elevations show them at the panel sizes the note describes, are lath breaks drawn at each joint, are building expansion joints and changes of base, such as wood framing meeting masonry, given an expansion joint, casing bead, or control joint, and is the sealant at joints and stucco edges in Section 07 92 00? |
| Accessories and corrosion | Accessories article and its designer note + Portland Cement note on cement-lime mixes + design analysis climate zone and ESC + accessory callouts on the details | Is one accessory material kept, roll formed galvanized steel, rigid PVC, or another named material, with PVC or vinyl where the note calls for it in humid or ESC C3 to C5 locations, does the base coat drop the lime for the resin plasticizer the Portland Cement note recommends in the same locations, and do the details name each accessory, such as casing beads, corner reinforcement, control joints, and the base termination, since the article sets materials rather than a complete list of profiles? |
| Terminations at openings, lintels, and grade | Over Metal Lintels and Flashings, Workmanship, and Steel and Wood Supports articles + head, jamb, and sill details + base of wall details + Section 07 60 00 + window, door, and louver sections | Do the head details show lath carried up over and across the underside of metal lintels and lapped over metal flashings, as the article requires, does lath over copper get the bituminous coating the Workmanship article asks for, are casing beads and sealant joints drawn at every window, door, and louver jamb, does each base of wall detail end the stucco with a drawn accessory above grade or paving, and are the head, sill, and base flashings specified in Section 07 60 00 or the window sections? |
| Soffits, suspended stucco, and hangers | Hangers, Wires, Straps, Rods, Eyebolts, and Masonry Anchorage Devices articles and their notes + Workmanship article (soffit drip) + reflected ceiling plan + soffit details + Section 09 22 00 | Is every exterior soffit or suspended stucco ceiling detailed with its hangers, with stainless steel or another corrosion-resistant hanger material in humid or ESC C3 to C5 locations and straps or rods kept where the project is subject to violent storms, as the notes direct, are the eyebolt and anchorage device blanks filled in, and is the soffit stucco pitched forward to form a drip at its edge? |
| Cement, finish coat, color, and sample panel | Portland Cement, Colored Stucco Finish Coat, Finish Coat, Surface Tolerance, Quality Assurance, and Proportions and Mixing articles + finish schedule and Section 09 06 00 + elevations | Is one cement type and color kept, with white cement where the finish is colored or white, as the note says, is the colored finish coat color tied to Section 09 06 00 or filled in, is one finish texture chosen that matches the finish schedule and elevations, with the surface tolerance read against it, since the tolerance excludes rough-textured finish, and is one sample panel option chosen, a submitted sample or a jobsite panel showing each phase of the work? |
Worked example: no control joints, no base accessory, and studs in the wrong section
Illustrative example: a two-story dormitory at an installation that the design analysis places in a humid climate zone has stucco over cold-formed steel studs and sheathing on most walls and over the concrete masonry of the stair towers, with stucco soffits at the entry canopy. The issued Section 09 24 23 keeps roll formed galvanized steel accessories and gray portland cement with lime, keeps the control joint option that locates joints as indicated although the elevations show none, and refers the framing to Section 09 22 00 although the wall sections show tall exterior studs sized for wind. The typical wall section shows the air barrier but not the lath paper, the stair tower junction between framing and masonry has no joint, the canopy soffit has no hanger detail, and the base of wall detail stops the stucco at the slab with no accessory.
Ask the architect to change the accessories to PVC or vinyl and replace the lime with the plasticizer the notes recommend for humid locations, to draw the control joints on the elevations, a control joint or casing bead at each framing-to-masonry junction, a base accessory set above the slab and paving, and a soffit hanger detail with corrosion-resistant hangers, and to show the paper-backed lath over the air barrier in the wall section. Ask the structural engineer or framing designer to confirm whether the exterior studs belong in Section 05 40 00 and meet the deflection criteria the Steel Framing note sets, and confirm with the architect that the air barrier product is compatible with stucco.
Avoid a false conflict
Section 09 24 23 covers portland cement stucco with its framing and lath. Non-load-bearing framing, furring, and ceiling suspension follow Section 09 22 00, load-bearing cold-formed steel follows Section 05 40 00, the air barrier behind the lath follows Section 07 27 10, flashing at heads, sills, and the base follows Section 07 60 00, sealant at joints and penetrations follows Section 07 92 00, finish colors may sit in Section 09 06 00, gypsum sheathing follows Section 09 29 00, and any continuous insulation behind the stucco follows the insulation section, so check those before calling a requirement missing. The section names control joints but has no expansion joint, weather barrier, or weep screed article, and its Accessories article sets materials rather than profiles, so where the drawings show an expansion joint, a weep screed, or another profile, check that a section or the details define it. The current guide section relies on ASTM C926 for surface preparation, mixing, and application and on ASTM C841 or C1063 for lath, and also cites ASTM C150, C206, C847, C897, C933, C1032, D1784, and others; confirm the editions your project invokes, and the adopted building code’s requirements for exterior plaster and water-resistive barriers, with the architect and the authority having jurisdiction.
When requirements disagree, follow the project’s document-control and clarification process. Do not assume that drawings always override specifications, or the reverse. Identify the exact sources and request an authorized decision.
Close the issue across the affected documents
Record the location or tag, drawing and specification references, issue dates, observed difference, and the decision needed. Assign an owner and keep the item open until the response identifies the governing requirement. Check the revised drawings and specification references together; a response email alone may leave the issued package inconsistent.
For the overall process, use the guide to drawing and specification conflicts. Mark an inapplicable checklist row with a reason, and distinguish a verified correction from a question that still needs design information.
Where Groundbook fits
Groundbook’s drawing and specification review helps investigate potential disagreements in the documents you supply. Include the relevant specification sections and drawing references, then verify the cited evidence with the responsible reviewers before acting on a finding.