If anyone cleans or maintains your facade from the roof down, OSHA puts the anchors on the building owner. Before any rope descent work, the owner must confirm in writing that every anchorage has been identified, tested, certified and maintained to hold 5,000 pounds per worker. This guide explains the rule in plain language, the inspection and certification cycle, and what to do when anchors are missing, expired or failing.
The rule applies to every anchorage used with a rope descent system, the method most high-rise window cleaning relies on.
| The rule says | What it means for your building |
|---|---|
| Identify each anchorage | Know where every anchor on the roof is, ideally on a roof plan with each one labeled. |
| Test each anchorage | A qualified person tests it using scientifically valid criteria. |
| Certify each anchorage | A qualified person certifies it as necessary, and at least every 10 years. |
| Maintain each anchorage | Keep it in certified condition, backed by an annual inspection by a qualified person. |
| 5,000 pounds, any direction, per worker | Each anchorage must hold at least 5,000 pounds in any direction for each worker attached. |
| Inform the employer in writing | Before any rope descent work, give the contractor written confirmation of all of the above. |
| The contractor's side | The contractor may not use an anchorage without that confirmation, and keeps it for the duration of the job. |
Source: OSHA 29 CFR 1910.27(b)(1). A plain-language summary, not legal advice.
Two clocks run at the same time:
The rule also requires certification "as necessary." In practice, anything that could change what an anchor can hold is a reason to recertify before the next rope descent job:
Keep the most recent certification date for every anchor, and plan the next one before it lapses.
Testing does not always mean pulling 5,000 pounds on every anchor. In a 2019 interpretation, OSHA said the qualified person may use any scientifically valid testing criteria: generally, criteria accepted by an industry consensus group or certified by a registered professional engineer. OSHA gave the example of an anchorage with a 5,000-pound ultimate capacity and a four-to-one safety factor, tested at 2,500 pounds, as acceptable. Testing to the full 5,000 pounds is also acceptable where a consensus standard requires it or the qualified person decides it is necessary.
| Party | What they are responsible for |
|---|---|
| Building owner | The legal duty under 1910.27(b)(1): identify, test, certify and maintain each anchorage, and confirm it in writing before rope descent work. |
| Property manager | Usually runs the anchor program for the owner: schedules inspections, keeps records and hands them to contractors. Check your management agreement. |
| Contractor | Must obtain the owner's written confirmation before anyone uses an anchorage, keep it for the job, and follow OSHA's rope descent rules. |
| Qualified person | Performs the inspections, tests and certifications the owner relies on. Often a specialist firm hired by the owner or manager. |
The duty sits with the owner even when the work is delegated. S&K can handle it on the owner's side: through our long-time anchor partner, we inspect, load test and certify anchor systems and provide the documentation. See anchor installation and inspection.
| Anchor type | What it is used for | Rating requirement |
|---|---|---|
| Roof anchors (tie-back or tie-off points) | Rope descent main and safety lines, and personal fall arrest | Rope descent: at least 5,000 lb in any direction per worker attached (1910.27(b)(1)). Fall arrest: 5,000 lb per worker, or engineered by a qualified person with a safety factor of at least two (1910.140(c)(13)) |
| Davit systems | Bases and arms that suspend rope or stage rigging out past the roof edge | Used with rope descent, the anchorage must meet the 1910.27(b)(1) requirement. Rated and certified for the rigging it supports |
| Horizontal lifelines and rail systems | Fall protection for workers moving along a roof edge | Engineered systems, designed and installed under a qualified person (1910.140(c)(13)) |
| Permanent powered platforms | Building-owned suspended platforms for facade maintenance | OSHA 1910.66: the owner confirms in writing that the installation has been inspected, tested and maintained, and its anchorages meet 1910.140(c)(13) |
"In any direction" matters. Rope loads rarely pull straight down, so the certification has to cover the angles the anchor will actually see.
If an insurer, auditor or OSHA asks, the report is your evidence. It should include:
A report that only says "anchors inspected, OK" will not hold up. Ask for anchor-by-anchor detail.
| What you find | What it means | The path forward |
|---|---|---|
| No records, or records you cannot trace | You cannot give the written confirmation, so rope descent work cannot start | Inspection, testing and certification by a qualified person |
| Certification older than 10 years | Out of compliance even if the anchors look fine | Recertification |
| An anchor fails inspection or testing | That anchor cannot be used | Take it out of service, then repair or replace, retest and recertify |
| Roof work around the anchors | Their condition may have changed | Reinspection and recertification before the next job |
| Anchors in the wrong places for the facade | Some drops cannot be rigged safely | Engineered additional anchors to close the gaps |
| Unknown or unrated anchors | Capacity cannot be confirmed | Engineering evaluation and testing, or replacement |
Uncertified anchors expose the property owner to serious OSHA liability and can halt all high-rise work. Through its long-time anchor partner, S&K flags anything that needs repair or replacement, and installs new engineered anchors where they are needed.
For taller buildings, anchors are the prerequisite. See High-Rise (8-15 stories) and Tower (16+ stories).
Not sure where your anchors stand? A local S&K team will walk the roof and give you a clear picture:
Book a free roof compliance survey
On the form, select Anchor Installation / Inspection & Certification.
Every year, by a qualified person. Each anchorage must also be certified as necessary and at least every 10 years, under OSHA 29 CFR 1910.27(b)(1).
The building owner. Before rope descent work, the owner must confirm in writing that each anchorage has been identified, tested, certified and maintained. Property managers usually run the program on the owner's behalf.
Not always. OSHA accepts scientifically valid testing criteria chosen by a qualified person. It has cited testing an anchorage with a 5,000-pound ultimate capacity and a four-to-one safety factor at 2,500 pounds as acceptable.
The contractor cannot use them for rope descent work, so high-rise window cleaning and facade work stop. Uncertified anchors also expose the owner to serious OSHA liability.
OSHA does not cite violations of ANSI standards it has not adopted, but it uses them as evidence of recognized hazards and feasible fixes. Treat I-14.1 as recognized industry practice alongside the OSHA rule.
Inspection and certification are two different requirements with two different clocks. Here is what each involves, what OSHA requires, and what good programs add.
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ANSI/IWCA I-14.1 is the window cleaning industry's safety standard. Here is what it is, how OSHA treats it, and what it means for your building.
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Without certified anchors, rope descent work cannot legally start. Here are the compliant ways to reach your facade, and how to choose between them.
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Many owners do not know whether their anchors were ever certified. Here is where to look, what to check on the roof, and what to do if you find nothing.
OSHA's rope descent rule puts a direct duty on the building owner. Here is what 1910.27(b) requires, in plain language, and what it does not.
Ten years is the maximum, not the target. Here is how the anchor certification cycle works, and the events that should send you back for recertification early.
A failed anchor is out of service until it is fixed and recertified. Here is how to restrict it, choose between repair and replacement, and keep work moving.
If an insurer, auditor or OSHA asks, the inspection report is your evidence. Here is what a defensible roof anchor report contains, item by item.
Visual checks, non-destructive evaluation and proof load tests each answer a different question. Here is what each shows, its limits, and what OSHA accepts.
Davit bases, D-rings, tiebacks and lifelines do different jobs on a roof. Here is what each is for, what it has to be rated for, and how to tell what your building needs.
OSHA puts roof anchor certification on the building owner. Here is how that duty is shared in practice with property managers, contractors and qualified inspectors.
A qualified contractor asks about your anchors before they ask about your glass. Here are the questions to expect, and what it means if you never hear them.
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