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Roofing · Canada

FLHA for roof leak repair

By SiteSortedBuilt from provincial OHS law and CCOHS guidance · How we write and check theseUpdated

Provincial OHS law requires hazards to be assessed and controlled before work starts. A field level hazard assessment (FLHA) for roof leak repair is done on site at the start of the shift and again whenever conditions change.

It lists the tasks, hazards and controls, and every worker signs on before starting and signs off at the end of the shift. The main hazards are falling from a roof edge, falling through a fragile roof or skylight, disturbing asbestos and electric shock from live wiring.

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FLHA example: roof leak repair

This is a complete FLHA for roof leak repair, with 6 job steps. Open it in the builder to add your site, crew and signatures, change anything, and download a PDF. Or download the free Word template below and fill it in by hand.

Field Level Hazard Assessment (FLHA)
Roof repair and leak repair · Roofing · Example
Document FLHA-001 · Rev 1

Job steps, hazards and controls

#Job stepHazardsRisk beforeControlsRisk after
1Check the roof type and condition from the ground, looking for brittle sheets, skylights and asbestos
  • Falling through a fragile roof or skylight
  • Disturbing asbestos
Critical
  • Work from underneath or from an aerial work platform so nobody stands on the fragile roof. Elimination
  • Cover or guard every skylight and fragile sheet with a fixed, marked cover or mesh before work starts. Engineering (guarding)
  • Install safety mesh under new roof sheeting, and use crawl boards or staging to spread the load on fragile surfaces. Engineering
  • Use fall arrest on rated anchors when working near fragile areas. Engineering
  • Treat all roof sheets as fragile until a competent person confirms they are not. Old fibre cement and plastic sheets are fragile. Administrative
  • Put "Fragile roof" signs at every roof access point. Administrative
  • Never walk on sheets between purlins or along skylights. Stay on boards or staging. Administrative
  • Wear a full body harness clipped to a rated anchor. PPE
  • Get an asbestos survey before work on buildings built before 1990. Elimination
  • Seal off the work area and keep everyone else out. Engineering (guarding)
  • If asbestos must be disturbed, keep it wet, use hand tools not power tools, and clean up with a HEPA vacuum. Engineering
  • Follow your province's asbestos rules, including notification and trained or certified workers where required. Administrative
  • In BC, a qualified person must inspect and write a hazardous materials report before demolition or renovation, and asbestos abatement must be done by a WorkSafeBC licensed contractor (since 1 January 2024). Administrative
  • Stop work straight away if you find suspect asbestos. Do not touch it and tell your supervisor. Administrative
  • Wear a fit-tested respirator suited to the work, and disposable coveralls. PPE
Medium
2Set up a secured ladder and edge protection or a harness and anchor
  • Falling from a ladder
  • Falling from a roof edge
Critical
  • Use a platform ladder, mobile scaffold or aerial work platform for longer jobs instead of a straight ladder. Substitution
  • Use CSA Grade 1, 1A or 1AA ladders in good condition. Remove any damaged ladder from site. Engineering
  • Set extension ladders at a 4 to 1 angle on firm, level ground, tied or footed, and reaching 1 metre above the landing. Engineering
  • Use ladders only for short, light work. Do not carry heavy or awkward loads up a ladder. Administrative
  • Keep three points of contact and your belt buckle between the side rails. Do not overreach. Administrative
  • Do not stand on the top three rungs of an extension ladder or the top step of a stepladder. Administrative
  • Check the ladder before each use: feet, rungs, side rails and locks. Administrative
  • Wear non-slip safety boots with clean soles. PPE
  • Do what you can from the ground or from a scaffold at the gutter line, for example pre-assemble parts on the ground. Elimination
  • Install edge protection or guardrails on all open roof edges before work starts. Engineering (guarding)
  • Use a perimeter scaffold with handrails and toe boards along the eaves where practical. Engineering
  • Where guardrails cannot be fitted, use fall restraint on certified roof anchors so workers cannot reach the edge. Engineering
  • Use one safe, controlled access point and keep others off the roof. Administrative
  • Stop roof work in strong wind or rain, and when the roof is wet, icy or covered in dust or frost. Administrative
  • Wear a harness clipped to a rated anchor when using restraint or fall arrest, and soft-soled non-slip boots. PPE
Medium
3Go into the roof space to find the leak, watching for live cables and weak ceiling joists
  • Electric shock from live wiring
  • Falling through a floor opening or void
  • Heat stress
  • Bites and stings
Critical
  • Isolate the power before any work. Do not work live. Elimination
  • Lock out and tag the isolation point with your own personal lock and danger tag. Engineering (guarding)
  • Test before you touch: prove dead at the point of work with a tested voltage tester. Engineering
  • Only licensed electricians do electrical work, to the Canadian Electrical Code and provincial rules. Administrative
  • Cover every hole and penetration with a fixed, secured cover marked "HOLE" or "DANGER". Engineering (guarding)
  • Put guardrails with toe boards around stairwells, lift shafts, voids and open edges. Engineering (guarding)
  • Install stairs early and fit temporary handrails as soon as they go in. Engineering
  • Never remove a cover or guardrail without approval. Put it back straight away. Administrative
  • Schedule heavy work for the cooler part of the day. Elimination
  • Provide shade over work and rest areas, and fans or cooling in attics. Engineering
  • Supply cool drinking water close by and drink a cup every 15 to 20 minutes. Administrative
  • Take regular rest breaks in the shade, more often as it gets hotter. Administrative
  • Check work areas before starting, and get pest control to remove nests. Elimination
  • Look before you reach into dark spaces. Administrative
  • Ask owners to keep pets away from the work area. Administrative
  • Know who has allergies and keep their medication, such as an epinephrine auto-injector, close by. Administrative
Medium
4Replace cracked tiles, sheets or flashings and seal joints
  • Cuts from sharp edges
  • Hazardous chemicals
  • Slips and trips
Medium
  • Deburr or cover sharp edges, and fit edge protectors on exposed sheet metal. Engineering
  • Use knives with retractable or self-retracting blades. Engineering
  • Cut away from your body and keep your other hand clear. Administrative
  • Put used blades in a blade bin or sharps container. Administrative
  • Use two people to handle large sheets of metal or glass. Administrative
  • Choose the least harmful product that does the job, for example water-based instead of solvent-based. Substitution
  • Use chemicals in well-ventilated areas, or use fans and extraction in closed rooms. Engineering
  • Read the Safety Data Sheet (SDS) and WHMIS labels before use. Workers have WHMIS training. Administrative
  • Keep chemicals in labelled containers. Never decant into drink bottles. Administrative
  • Store chemicals away from heat, food and drink, and keep products that react with each other apart. Administrative
  • Plan walkways and keep them clear of materials, hoses and leads. Elimination
  • Run leads and hoses overhead on hooks or stands, or along walls, not across walkways. Engineering
  • Fill or cover holes, and lay boards or mats on muddy access paths. Engineering
  • Clean up offcuts, packaging and spills as you go, not at the end of the day. Administrative
  • Keep work areas, stairs and access paths well lit. Administrative
Medium
5Use heat for flashings only with a hot work permit and a fire extinguisher at hand
  • Fire from hot works
  • Burns from hot surfaces
Critical
  • Use cold work methods where you can, such as bolting, press fittings or cutting with a saw instead of a torch. Elimination
  • Move anything that can burn at least 10 metres away, or cover it with fire blankets. Engineering (guarding)
  • Use fire-resistant screens to stop sparks reaching people or gaps in walls and floors. Engineering
  • Get a hot work permit before starting. Administrative
  • Keep a charged fire extinguisher and fire blanket at the work spot. Administrative
  • Keep a fire watch during the work and for at least 60 minutes after you finish. Administrative
  • Check for smouldering behind walls, in ceilings and under floors before you leave. Administrative
  • Wear flame-resistant clothing, welding gloves and eye or face protection. PPE
  • Isolate heating systems and let parts cool before you touch them. Elimination
  • Fit guards or insulation on hot pipes and equipment. Engineering
  • Mark hot items with chalk or a "HOT" sign so others know. Administrative
  • Keep a first aid kit and cool running water nearby for burns. Administrative
  • Wear heat-resistant gloves and long sleeves. PPE
Medium
6Clean up debris, check gutters are clear and remove the ladder
  • Poor housekeeping and waste
  • Falling tools and materials
High
  • Order materials to size and send packaging back where you can. Elimination
  • Put waste bins and chutes close to the work. Engineering
  • Clean as you go, and do a full clean up at the end of each day. Administrative
  • Keep exits, stairs and walkways clear at all times. Administrative
  • Stack materials neatly on level ground, away from edges. Administrative
  • Wear gloves when handling waste. PPE
  • Barricade and sign the drop zone under overhead work so nobody walks beneath. Engineering (guarding)
  • Fit toe boards, kick plates and mesh screens on scaffolds and edges. Engineering
  • Use catch fans, debris netting or covered walkways where people pass below. Engineering
  • Tether hand tools when working at height. Engineering
  • Keep platforms tidy. Do not stack materials near edges or above toe board height. Administrative
  • Lower materials with a hoist, chute or rope. Never throw or drop anything down. Administrative
  • Wear a hard hat anywhere objects could fall. PPE
Medium

PPE

CSA green triangle safety boots (CSA Z195)Full body harness (fall arrest)Work glovesSafety glasses (CSA Z94.3)Sun protection (sunscreen, hat, long sleeves)Hard hat (CSA Z94.1)Respirator fit tested to CSA Z94.4 (P100 for dust, or the type the air test calls for)CoverallsCut-resistant glovesChemical-resistant glovesSafety gogglesWelding glovesFace shield

Plant and equipment

Extension ladderHand toolsPropane torch

Permits and plans

Roof access permitFall protection planHot work permit

Emergency

Call 911. Add the nearest hospital, the muster point and the first aid attendant for your site.

Sign-off

Supervisor and every worker sign to confirm they have read and understood this FLHA, then sign off at the end of the shift.

Free FLHA template for roof leak repair

Word (.docx) and PDF, Letter landscape, no email needed. Fill in your site details, then print or send it.

Word template (.docx)PDF template

Make yours in 2 minutes

Same document, filled in for your job. Answer a few yes or no questions, the crew signs on the phone, and you send the PDF.

Start this FLHA

Pre-start checklist for roof leak repair

Tick these off before work starts. They come from the hazards, permits and equipment in this job.

The safe sequence of work

  1. Check the roof type and condition from the ground, looking for brittle sheets, skylights and asbestos
  2. Set up a secured ladder and edge protection or a harness and anchor
  3. Go into the roof space to find the leak, watching for live cables and weak ceiling joists
  4. Replace cracked tiles, sheets or flashings and seal joints
  5. Use heat for flashings only with a hot work permit and a fire extinguisher at hand
  6. Clean up debris, check gutters are clear and remove the ladder

Hazards to watch on roof leak repair

The hazards most specific to this job, and the step where each one comes up.

Step 3Bites and stingsSpiders, wasps, ticks and dogs bite or sting workers in attics, crawl spaces and yards.
Step 1Falling through a fragile roof or skylightA worker steps on a skylight, clear sheet or old fibre cement roof and falls through to the floor below.
Step 5Burns from hot surfacesTouching hot pipes, tools, bitumen, solder or freshly welded metal burns the skin.
Step 5Fire from hot worksSparks and heat from welding, grinding or flame torches set fire to timber, insulation, rubbish or fuel nearby.
Step 2Falling from a roof edgeA worker slips or walks off the edge of a roof or gutter line and falls to the ground.
Step 3Heat stressHard work in hot weather or hot attics causes heat exhaustion or heat stroke, which can kill.
Almost certainLikelyPossibleUnlikelyRareHow bad it could be: First aid only to FatalityBA
Highest risk on roof leak repair: Critical before controls (B), down to Medium after controls (A), on the Canada 5 by 5 risk matrix (likely and fatality becomes unlikely and serious injury).

What changes on your site

This example covers the job itself. Your site may add more. Add controls for any of these that apply (the builder asks you these as yes or no questions):

  • Could anyone fall 3 metres or more, or fall any distance into machinery, water, a hazardous substance or through an opening?
  • Will anyone work on a roof?
  • Will you use a scaffold or mobile tower?
  • Will you use an aerial work platform (scissor lift or boom lift)?
  • Was the building built before 1990, and will you sand, scrape, cut, heat or strip paint?

Why FLHAs get rejected

Prime contractors and COR auditors send documents back for these reasons. This example avoids them, but check yours too.

  • End of shift boxes already say "None" when the form was signed at the start of the shift.
  • One FLHA reused for days or weeks, or a "review by" date a month away, when the work and conditions change daily.
  • No time of assessment and no record of any revision, which Alberta s.7(3) requires.
  • Workers signed that they "read" it, but nothing shows they took part, which Alberta s.8(1) requires.
  • Work at height with no fall protection plan where the province requires one, or no written rescue procedure for workers using fall arrest.
  • Permits or locates required on site but no permit or ticket numbers recorded.
  • No re-assessment entry after an obvious change such as weather, a new task or a new crew member.

Rules by province for roof leak repair

Province or territoryKey local ruleRegulator
OntarioFall protection (O. Reg. 213/91 s.26) applies at a fall of more than 3 m, more than 1.2 m where the work area is used as a path for a wheelbarrow or similar equipment, and at any height into operating machinery, water or other liquid, a hazardous substance, or through an opening.Ontario Ministry of Labour, Immigration, Training and Skills Development
British ColumbiaFall protection is required where a fall of 3 m or more may occur (s.11.2). A written fall protection plan is required at 7.5 m or more where there are no permanent guardrails (s.11.3).WorkSafeBC
AlbertaA hazard assessment must be done before work begins, and before a new work site is built (OHS Code s.7(1)). The results must be written down with the controls (s.7(2)).Alberta Occupational Health and Safety
QuebecGuardrails (Safety Code s.2.9.1, as amended by Decret 63-2025) are needed where a worker could fall into liquid or a hazardous substance, onto moving parts or dangerous equipment, 1.2 m or more when using a vehicle, 1.5 m or more when handling a load, and more than 3 m in all other cases.CNESST (Commission des normes, de l'equite, de la sante et de la securite du travail)
ManitobaA prime contractor is required whenever more than one employer or self employed person works on the site at the same time (Act s.7).Manitoba Workplace Safety and Health Branch
SaskatchewanAn occupational health committee is required at 10 or more workers of one employer (Act s.3-22).Saskatchewan Ministry of Labour Relations and Workplace Safety, OHS Division
Nova ScotiaWorkers must be trained in fall protection before using it or working in, supervising or planning work in a fall protection area, with a refresher at least every 3 years (WHSR s.21.19).Nova Scotia Department of Labour, Skills and Immigration, Safety Branch (OHS)
New BrunswickFall protection is needed from 3 m above water or the nearest permanent safe level (Reg 91-191 s.49(1)(a)(i)).WorkSafeNB
Newfoundland and LabradorGive written notice to the minister before starting a construction project that will last 30 days or more, with the site, location, type of work and number of workers (Regs s.8).Government Services, Occupational Health and Safety Division
Prince Edward IslandFall protection is needed from 3 m above the nearest safe surface or water (Fall Protection Regulations s.2(1)(a)).Workers Compensation Board of PEI, OHS Division
YukonEvery employer must do hazard assessments with the committee, representative or workers, and redo them after significant changes or incidents (Regs s.1.03.01).Yukon Workers' Safety and Compensation Board
Northwest TerritoriesFall protection is needed from 3 m, or lower if there is a risk of injury (s.119(1)). Guardrails are needed for falls of 1.2 m to 3 m at permanent work sites (s.119(2)).Workers' Safety and Compensation Commission (WSCC)
NunavutNo 911. To reach the RCMP in an emergency, dial your community's first three digits then 1111 (Iqaluit: 979-1111). Put the local fire, ambulance and RCMP numbers on every FLHA.Workers' Safety and Compensation Commission (WSCC)

Questions

Do I need an FLHA for roof leak repair?

Provincial OHS law requires hazards to be assessed and controlled before work starts. A field level hazard assessment (FLHA) for roof leak repair is done on site at the start of the shift and again whenever conditions change.

Who signs the FLHA?

The supervisor and every worker take part in the assessment and sign on before work starts, then sign off at the end of the shift. Review it and re-sign whenever the task or conditions change.

How long do I keep it?

Keep completed hazard assessments for at least 3 years (COR auditors sample the last 12 months). Review this FLHA and re-sign whenever the task, crew or conditions change.

What PPE is needed for roof leak repair?

Usually CSA green triangle safety boots (CSA Z195), Full body harness (fall arrest), Work gloves, Safety glasses (CSA Z94.3), Sun protection (sunscreen, hat, long sleeves), Hard hat (CSA Z94.1), Respirator fit tested to CSA Z94.4 (P100 for dust, or the type the air test calls for), Coveralls, Cut-resistant gloves, Chemical-resistant gloves, Safety goggles, Welding gloves, Face shield. The site rules may add more, so check with the general contractor.

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Blank FLHA template: free FLHA templates. Also for other countries: Australia (SWMS) · United Kingdom (RAMS) · United States (JHA)

Sources