InterNACHI Stucco/EIFS Inspector study plan

Map the three-coat stucco assembly layer by layer (sheathing, weather-resistive barrier, lath, scratch, brown, finish) and state the function of each layer in your own words

Distinguish the accessory components that must be identified during inspection: casing bead, weep screed, control joint, expansion joint, corner aid, and foundation weep

Identify the lath types and their spacing and fastening conventions, and explain why fastener embedment and penetration depth matter

Explain the curing sequence and minimum thickness expectations for scratch and brown coats and how they affect finish adhesion

List the common stucco defects that indicate installation error (cracking patterns, delamination, poor bond, missing or mislocated control joints) and describe the mechanism behind each

Trace how water enters a stucco assembly at penetrations, terminations, and joints, and where it is supposed to exit

Explain the role of the weep screed and the required clearance above grade and roof surfaces

Compare one-coat and three-coat systems and note which inspection observations differ between them

Deconstruct the EIFS assembly (substrate, adhesive or mechanical attachment, insulation board, base coat with reinforcing mesh, finish coat) and state the function of each component

Differentiate water-drainage EIFS from barrier-type EIFS and explain how each manages moisture

Identify the accessory profiles used in EIFS (starter track, corner bead, expansion joint, sealant joint) and their installation intent

Describe the mesh embedment and base-coat thickness requirements that determine impact and water resistance

Enumerate the EIFS defects that signal installation failure (mesh too close to surface, thin base coat, unsealed penetrations, poor adhesive contact, cracking at joints) and the mechanism behind each

Explain the flashing sequence at windows, doors, and roof-wall intersections and why shingle-lap order matters

Describe how sealant joints at terminations and penetrations are intended to shed water and what a failed sealant looks like

Identify the drainage plane continuity requirements where EIFS meets other claddings

Build a moisture-path checklist that follows water from cladding surface through the WRB to the drainage exit at every penetration and termination

Explain kick-out flashing, backer rod depth, and sealant joint geometry and how each affects drainage and drying

Describe the conditions that produce hidden moisture accumulation behind stucco and EIFS and how inspection observations can reveal them

Distinguish defects that are drainage failures from those that are flashing or sealant failures

Sequence an inspection from exterior approach through wall assembly to terminations so no component is skipped

Draft observation language that separates observed condition from inference about cause

Identify which findings require reporting as safety, structural, or moisture concerns and which are maintenance items

Describe how to document conditions with measurements, locations, and photographs so a report stands on its own

Review and correct earlier defect catalogs against the inspection sequence so each defect maps to a specific inspection step

Practice writing defensible statements that avoid diagnosing cause beyond the evidence

Revisit stucco component terminology and accessory identification until recall is immediate

Identify the report sections a client needs and the order that makes findings actionable

Rehearse the full inspection sequence end to end without notes

Recall component, defect, and flashing facts across all four domains under time pressure

Resolve remaining weak areas by rewriting the explanations you could not produce from memory

Confirm report-writing standards are applied consistently across all sample findings