Quick answer: A commercial roof snow-removal plan should be written before the first major storm. It must identify who monitors conditions, who evaluates structural risk, who authorizes removal, how workers access the roof, where snow can be placed, how drains and equipment are protected, and how the work is documented.
The plan should use site-specific triggers rather than a universal snow depth. Density, drifting, rain-on-snow, roof design, building condition, and structural criteria all affect the decision.
Snow removal is not ordinary janitorial work. It combines fall hazards, hidden skylights and edges, falling material, electrical and mechanical equipment, membrane damage, and changing structural load.
Key Takeaways
- Assign structural, roofing, safety, operations, and contractor roles clearly.
- Map access points, fall hazards, skylights, drains, equipment, roof zones, and protected areas below.
- Sequence removal to avoid concentrated or abruptly unbalanced loading.
- Maintain an event log with weather, observations, decisions, crew, work zones, and photographs.
Who should be involved in the plan?
The owner or facility lead coordinates the plan. A structural professional establishes building-specific load and distress guidance when needed. A roofing contractor identifies vulnerable membrane, flashing, drainage, and access conditions. The snow-removal contractor provides its methods and safety program.
Operations, security, tenant contacts, HVAC providers, and the insurer or risk manager may also have roles. Name a primary and backup decision-maker so after-hours events do not stall.
What should the roof map show?
Mark roof edges, elevation changes, skylights, hatches, ladders, parapets, drains, scuppers, overflow openings, expansion joints, gas and electrical lines, rooftop units, screen walls, solar equipment, and known fragile or repaired areas.
The map should also show ground exclusion zones, acceptable snow placement, entrances, loading docks, emergency exits, pedestrian routes, and property boundaries. Snow should not be dropped where it creates a new hazard or blocks drainage and access.
How should removal triggers be set?
Use the building’s design and condition, local forecast, actual snow water content, drifting, rain-on-snow, and structural observations. A trigger may involve professional review, increased monitoring, or staged removal rather than one automatic depth.
FEMA identifies distress signs such as sagging members or ceilings, popping or creaking, bowed framing, displaced sprinkler components, cracks, and doors or windows that bind. Any such sign calls for immediate escalation and protection of occupants.
- Forecasted accumulation and rain-on-snow
- Drift growth at walls and equipment
- Blocked primary or overflow drainage
- Interior movement, sounds, or leakage
- Structural-professional criteria
How can removal damage the roof?
Sharp shovels, picks, snow blowers, dragged equipment, and hidden debris can cut or puncture membranes and damage metal, flashings, curbs, drains, and fasteners. Workers may also step on buried skylights or trip over lines.
The method should preserve a protective layer where specified, use roof-compatible tools, mark hidden features before snow, and stop when the surface cannot be distinguished. A roofer should inspect suspected damage promptly.
What records should be kept after each event?
Log the date, weather, observed conditions, decision, authorizer, contractor, crew, access times, areas treated, equipment used, snow placement, incidents, and before-and-after photos. Record drains and equipment that were checked.
After the event, inspect the roof when safe, document damage or repairs, and update the plan. Good records support maintenance and risk decisions, but they do not guarantee insurance coverage or eliminate legal obligations.
Frequently Asked Questions
What snow depth should trigger removal?
There is no universal depth. Use building-specific structural guidance, snow density, drifting, weather, and observed conditions.
Can facility staff remove roof snow?
Only if they are trained, authorized, equipped, and covered by a site-specific safety and load-management plan. Many owners use qualified contractors.
Should drains be opened during removal?
Drainage paths need to remain functional, but workers must avoid damaging drains, membranes, and strainers. Use the roof plan and approved methods.
Can snow be piled on another roof area?
Moving snow can create dangerous concentrated or unbalanced loading. Follow the structural and removal plan.
Should the roof be inspected after snow removal?
Yes, when conditions allow. Look for cuts, punctures, displaced flashing, drain damage, and other changes caused or revealed by the work.
Get a Clear Roof Recommendation
For related service information and next steps, explore commercial roof maintenance, commercial roofing services, commercial roof repair, and free roof inspection.
All Star Roofing is a family-owned, licensed and insured roofing company based in Orem with 30+ years of roofing experience. Call (801) 381-0727 or schedule a free inspection for a practical recommendation based on the actual roof and current conditions.