Mix mortar and plaster to desired consistency or direct workers who perform mixing.

“Mix mortar and plaster to desired consistency or direct workers who perform mixing.” is a core task performed by Plasterers and Stucco Masons. Among the occupation's 15 rated tasks, workers place it 13th by importance (#3 most important). About 91% of workers say it is relevant to their job.

This is a single occupation-specific task statement from O*NET. The figures below describe how central the task is to the job and what independent studies measure about AI and this kind of work — not a prediction that the task will be automated.

Work activities this task rolls up to

O*NET groups concrete tasks into broader work activities shared across many occupations.

• Prepare mixtures or solutions. in Performing General Physical Activities

AI exposure

The OpenAI / Eloundou “GPTs are GPTs” study rates this task E0. No direct exposure — current language models give little or no time savings on this task.

Exposure measures whether a model could meaningfully speed the task up — it is an estimate of overlap with model capabilities, not a measure of whether the work will be done by software. The study's intermediate score (β) for this task is 0.00. Automation potential label: T0.

Other tasks in this occupation

• Cover surfaces such as windows, doors, or sidewalks to protect from splashing. · importance 4.3
• Clean job sites. · importance 4.2
• Set up scaffolds. · importance 4.1
• Apply coats of plaster or stucco to walls, ceilings, or partitions of buildings, using trowels, brushes, or spray guns. · importance 4.1
• Determine materials needed to complete the job and place orders accordingly. · importance 4.1
• Cure freshly plastered surfaces. · importance 4.1
• Install guide wires on exterior surfaces of buildings to indicate thickness of plaster or stucco and nail wire mesh, lath, or similar materials to the outside surface to hold stucco in place. · importance 4.0
• Apply weatherproof, decorative coverings to exterior surfaces of buildings, such as by troweling or spraying on coats of stucco. · importance 4.0
• Clean and prepare surfaces for applications of plaster, cement, stucco, or similar materials, such as by drywall taping. · importance 3.9
• Create decorative textures in finish coat, using brushes or trowels, sand, pebbles, or stones. · importance 3.9
• Apply insulation to building exteriors by installing prefabricated insulation systems over existing walls or by covering the outer wall with insulation board, reinforcing mesh, and a base coat. · importance 3.7
• Rough the undercoat surface with a scratcher so the finish coat will adhere. · importance 3.7
• Spray acoustic materials or texture finish over walls or ceilings. · importance 3.6
• Mold or install ornamental plaster pieces, panels, or trim. · importance 3.5

See all tasks on the Plasterers and Stucco Masons page.

Sources for this page

Every figure above traces to a named public dataset and the exact release below — not hand-written opinion. See the full methodology for what each measure does and does not mean.

• O*NET 30.3 U.S. Department of Labor / National Center for O*NET Development
• “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130 OpenAI / academic

Data compiled June 2, 2026. Figures are estimates, not advice.

@misc{singulariki-task-9879,
  title  = {Mix mortar and plaster to desired consistency or direct workers who perform mixing.},
  author = {{Singulariki}},
  year   = {2026},
  note   = {O*NET 30.3; “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130. Accessed June 7, 2026},
  url    = {https://singulariki.com/tasks/task-9879}
}