Clay Roof Tiles AHA (Activity Hazard Analysis / Job Hazard Analysis)
Updated 2026-06-23
A Clay Roof Tiles AHA (Activity Hazard Analysis / Job Hazard Analysis) is the plan that keeps the crew installing clay roof tiles safe from the steep-slope roof fall, from the heavy brittle tile handling and load, and around the clay-tile cutting silica dust and breakage. Clay roof tiles installs clay-tile roofing — combining the steep-slope- roof-fall hazard, the heavy-brittle-tile-handling and load hazard, and the clay-tile-cutting-silica-dust and breakage hazard. This guide walks through building a Clay Roof Tiles AHA that names the steep-slope-roof-fall, heavy-brittle-tile-handling/load, and clay-tile-cutting-silica-dust/breakage hazards and assigns the fall, handling/ load, and cutting controls that hold up in the field.
Why clay roof tiles needs its own AHA
Clay roof tiles is the installation of clay-tile roofing — the fired-clay roof tiles (clay/terracotta tiles, including barrel/mission and flat clay tiles) installed on sloped roofs as a heavy, durable, traditional steep- slope roofing. This continues the steep-slope roofing group, focused specifically on clay tiles. The defining feature is the same steep-slope fall hazard, sharpened by the heavy, brittle clay tile: clay tiles are heavy (a handling and roof-load concern) and particularly brittle (clay tiles crack/break readily — a breakage, sharp-edge, and falling-tile hazard), and cutting fired clay tiles generates silica-containing dust. The hazards combine the steep-slope-roof-fall (working on the pitched roof — the fall hazard, sharpened by the heavy tiles and slippery tile surface), the heavy-brittle-tile-handling and load (handling the heavy brittle tiles and the roof load — the handling, breakage, and structural-load hazards), the clay-tile-cutting-silica-dust and breakage (cutting the clay tiles and the breakage — the silica-dust and breakage hazards), and the eye. The steep-slope-roof-fall and the heavy-brittle-tile-handling/load justify a dedicated AHA.
Breaking clay roof tiles into steps
The steps for a Clay Roof Tiles AHA follow the work:
- Assess the roof (slope, load capacity, access)
- Set up steep-slope fall protection and safe roof access
- Load and stage the heavy clay tiles (handle brittle tiles, roof load)
- Cut the clay tiles as needed (silica dust)
- Install and fasten the clay tiles
- Manage the fall, load, and dust/breakage hazards
- Complete
Each step carries a hazard, and the steep-slope-roof-fall, the heavy-brittle-tile-handling/load, and the clay-tile- cutting-silica-dust/breakage are where the most significant risks concentrate.
The hazards step by step
Steep-slope-roof-fall
Working on the pitched roof — the fall hazard, sharpened by the heavy tiles and slippery tile surface. The controls are steep-slope fall protection (clay tiles are installed on sloped/pitched roofs — the fall hazard is dominant (slope slip-off, eave/edge falls), sharpened because the tiles are heavy and the tile surface can be slippery (especially when wet, and rounded barrel tiles are awkward to walk on), so fall protection appropriate to steep- slope roofing (personal fall arrest with anchored lifelines, roof brackets/jacks and toe boards, staging), safe roof access, and slip-resistant footwear), and the fall controls. The steep-slope-roof-fall is the primary defining hazard — pitched-roof work, sharpened by heavy/slippery clay tiles. (These follow the steep-slope fall-protection fundamentals.)
Heavy-brittle-tile-handling and load
Handling the heavy brittle tiles and the roof load — the handling, breakage, and structural-load hazards. The controls are heavy-brittle-tile-handling and load controls (clay tiles are heavy (a significant manual-handling/ lifting hazard getting the tiles onto and around the roof) and particularly brittle (clay tiles crack and break readily — careful handling to minimize breakage, and broken tiles create sharp edges and falling/sliding hazards), and the roof load is a concern (the concentrated weight of staged clay tiles must be distributed, and the structure must support the heavy clay tile roof), so safe lifting/handling, mechanical assistance/hoisting where possible, careful handling of the brittle tiles, and roof-load management), and the handling/load controls. The heavy- brittle-tile-handling/load is a defining hazard — clay tiles are heavy, brittle, and a roof-load concern. (These follow the material-handling and structural-load fundamentals.)
Clay-tile-cutting-silica-dust and breakage
Cutting the clay tiles and the breakage — the silica-dust and breakage hazards. The controls are clay-tile-cutting- silica-dust and breakage controls (cutting fired clay roof tiles generates dust containing crystalline silica (fired clay tiles are silica-containing — a silica-dust inhalation hazard), so silica dust controls (wet cutting or dust extraction where power-cutting, respiratory protection appropriate to silica), and the tile breakage (brittle clay tiles break readily — broken-tile sharp edges, falling-tile hazards, and slip/trip from broken tiles underfoot — breakage management and cleanup)), and the cutting-dust/breakage controls. The clay-tile-cutting- silica-dust/breakage is a defining hazard — cutting clay tiles is a silica-dust hazard and clay tiles are particularly brittle. (These follow the silica and material fundamentals.)
Eye
The eye (clay-tile dust, chips, breakage) carries the eye hazard. The controls are eye protection (clay-tile cutting dust, flying chips, and breakage debris), and the eye controls. (These follow the eye-protection fundamentals.)
A simple Clay Roof Tiles AHA structure
| Step | Hazard | Control | Standard |
|---|---|---|---|
| Assess | Fall / load | Assess the roof (slope, load capacity, access) | project |
| Fall protection | Fall | Set up steep-slope fall protection and safe roof access | OSHA 1926.501 |
| Load | Strain / breakage | Load and stage the heavy clay tiles (handle brittle tiles, roof load) | project |
| Cut | Silica | Cut the clay tiles as needed (silica dust) | OSHA 1926.1153 |
| Install | Fall | Install and fasten the clay tiles | project |
| Manage | Fall / dust | Manage the fall, load, and dust/breakage hazards | project |
Steep-slope fall protection and heavy-brittle-tile-handling/load control
A Clay Roof Tiles AHA centers on steep-slope fall protection and heavy-brittle-tile-handling/load control. The steep-slope fall protection addresses the pitched-roof work — controlled by steep-slope fall protection (personal fall arrest, roof brackets/jacks and toe boards, safe access, slip-resistant footwear). The heavy-brittle-tile- handling/load control addresses the heavy brittle clay tiles — controlled by heavy-brittle-tile-handling and load controls (safe lifting, careful handling of brittle tiles, mechanical assistance, roof-load distribution). And the cutting dust, breakage, and eye get cutting-dust/breakage and eye controls. An AHA built on steep-slope fall protection and heavy-brittle-tile-handling/load control, with cutting-dust controls, addresses the hazards that define clay roof tiles.
From the field: what actually goes wrong
In fourteen years across federal, heavy civil, and industrial projects, clay roof tiles installs fired-clay tile roofing (clay/terracotta, including barrel/mission and flat tiles) on sloped roofs, and its hazards are the steep- slope roofing profile sharpened by the heavy, particularly brittle clay tile. The steep-slope-roof-fall hazard is a primary defining concern — clay tiles are installed on sloped/pitched roofs, where the fall hazard is dominant (slope slip-off, eave/edge falls), sharpened because the tiles are heavy and the tile surface can be slippery (especially when wet, and rounded barrel tiles are awkward to walk on), so fall protection appropriate to steep- slope roofing (personal fall arrest with anchored lifelines, roof brackets/jacks and toe boards, staging), safe roof access, and slip-resistant footwear are central. The steep-slope fall is the defining hazard.
The heavy-brittle-tile-handling/load and the clay-tile-cutting-silica-dust/breakage are the other defining hazards, and the brittleness is the clay-specific emphasis. On the projects I have run, clay tiles are heavy (a significant manual-handling and lifting hazard getting them onto and around the roof) and particularly brittle (clay tiles crack and break readily — even more so than concrete tiles, so careful handling to minimize breakage, and broken tiles create sharp edges and falling/sliding hazards), and the roof load is a real concern (concentrated staged weight distributed, and the structure supporting the heavy clay tile roof). And the clay-tile-cutting- silica-dust/breakage hazard is that cutting fired clay roof tiles generates dust containing crystalline silica (fired clay is silica-containing — a silica-dust inhalation hazard), so silica dust controls (wet cutting or dust extraction where power-cutting, respiratory protection appropriate to silica) apply, along with the frequent breakage of the brittle tiles (sharp edges, falling-tile and slip/trip hazards, breakage cleanup). The eye hazard from dust and chips rounds it out. The AHA built on steep-slope fall protection and heavy-brittle-tile-handling/ load control is the one that protects the clay-tile crew.
The bottom line
A Clay Roof Tiles AHA names the steep-slope-roof-fall, the heavy-brittle-tile-handling/load, and the clay-tile- cutting-silica-dust/breakage hazards with specific controls — steep-slope fall protection (personal fall arrest, roof brackets/jacks and toe boards, safe access, slip-resistant footwear), heavy-brittle-tile-handling and load controls (safe lifting, careful handling of the brittle tiles, mechanical assistance, roof-load distribution), and clay-tile-cutting-silica-dust and breakage controls (silica dust controls — wet cutting/dust extraction and respiratory protection, breakage management). The steep-slope fall protection and the heavy-brittle-tile-handling/ load control are the defining concerns. The AHA that manages both is the one that protects the crew.
Frequently asked questions
Why is the steep-slope fall the dominant hazard?
Clay tiles are installed on sloped/pitched roofs (dominant slope slip-off and eave/edge fall hazard), sharpened because the tiles are heavy and the tile surface can be slippery (especially when wet, and rounded barrel tiles are awkward to walk on). Controls are steep-slope fall protection (personal fall arrest with anchored lifelines, roof brackets/jacks and toe boards, staging, safe access, slip-resistant footwear), and the fall controls.
Why is the brittleness a clay-specific hazard?
Clay tiles are heavy (a handling/lifting hazard) and particularly brittle — clay tiles crack and break readily (even more than concrete tiles), so careful handling is needed to minimize breakage, and broken tiles create sharp edges and falling/sliding hazards. Controls are heavy-brittle-tile-handling and load controls (safe lifting, careful handling of the brittle tiles, mechanical assistance/hoisting, roof-load distribution), and the handling/load controls.
Why is cutting clay tiles a silica-dust hazard?
Cutting fired clay roof tiles generates dust containing crystalline silica (fired clay is silica-containing — a silica-dust inhalation hazard). Controls are clay-tile-cutting-silica-dust and breakage controls (silica dust controls — wet cutting or dust extraction, respiratory protection appropriate to silica; breakage management and cleanup), and the cutting-dust/breakage controls.
What is clay roof tiles?
Clay roof tiles is the installation of clay-tile roofing — the fired-clay roof tiles (clay/terracotta tiles, including barrel/mission and flat clay tiles) installed on sloped roofs as a heavy, durable, traditional steep-slope roofing. Because steep-slope roofs have the dominant fall hazard (sharpened by heavy/slippery tiles), the clay tiles are heavy and particularly brittle (handling, breakage, roof load), and cutting them generates silica dust, those hazards apply.
Related AHAs and JHAs
- Roof Tiles AHA — the roof-tile fundamentals
- Slate Shingles AHA — the related slate roofing
- Asphalt Shingles AHA — the related asphalt-shingle roofing
- Roof Work JHA — the roof-work fundamentals
Written by Mustafa Tok, CSP, ASP, CHST — OSHA Authorized Outreach Trainer with 14+ years of international construction safety experience across federal, heavy civil, and industrial projects.