Skylights are a common feature on commercial rooftops. They reduce the need for artificial lighting, support energy efficiency goals, and are often part of the original building design. But while they provide value from an operational standpoint, they introduce a serious safety risk that is often underestimated – particularly in commercial, flat-roofed buildings where foot traffic for maintenance is frequent.
In Ontario, where workplace safety regulations are among the strictest in North America, skylight fall protection is not optional. Yet many building owners and property managers still fail to address skylights with the same rigor as open edges or access ladders.
This article provides a clear, detailed breakdown of the legal requirements, common misconceptions, and available solutions surrounding skylight fall protection Ontario. It’s written for Ontario property managers who want to ensure compliance, reduce liability, and create a safer environment for workers and contractors accessing the roof.
Understanding Why Skylights Pose a Serious Fall Hazard
The biggest misconception about skylights is that they’re safe simply because they’re “closed.” In reality, most skylights are constructed with lightweight plastic or acrylic domes, designed for light transmission – not structural load.
Under visual inspection, they often appear flush or solid. But in the event of a misstep, they can fracture or collapse entirely under the weight of a person. According to the Canadian Centre for Occupational Health and Safety (CCOHS), falls through fragile roof surfaces—including skylights—are classified as high-risk and require fall protection measures under national and provincial standards.
What the Ontario Regulations Actually Say
In Ontario, skylights are regulated under Regulation 851 – Industrial Establishments and Regulation 213/91 – Construction Projects, both made under the Occupational Health and Safety Act (OHSA).
Section 26.3(2) of Reg. 213/91 states:
“A worker shall be adequately protected by a guardrail system, protective covering or fall arrest system when exposed to a fall hazard, including… openings in a work surface.”
The interpretation is clear: skylights are classified as openings in a work surface. If a worker can fall through them, they must be protected. There is no legal exemption for domed skylights, tinted glass, or systems described as “impact-resistant” unless they are engineered, tested, and certified as fall protection systems.
The Ontario skylight fall protection requirements are not ambiguous. If a person can walk on the roof and step on a skylight, it must be protected using a compliant method.
What the Regulations Don’t Tell You
While the law outlines what must be done – i.e., skylights must be protected – it does not specify how. This lack of prescriptive detail is where many property managers fall short. For example:
- A skylight that’s surrounded by a painted line is not compliant.
- A “strong” skylight cover is not necessarily fall-rated unless it’s tested to meet CSA or ANSI standards.
- Workers using a nearby fall arrest system are only protected if the system prevents contact with the skylight.
This leads to many buildings operating under the false impression of compliance, when in reality, they are exposed to serious risk.
The Real-World Risk of Non-Compliance
In 2021, a roofing contractor in Mississauga was fatally injured after stepping on an unprotected skylight during routine inspection. The investigation found no visible warning signs or barriers—and no engineered safety system in place.
The Ministry of Labour issued multiple orders and imposed fines under OHSA. This is not an isolated incident. In many cases, the skylight is mistaken for a secure surface – until it isn’t.
Beyond the human cost, failing to install skylight safety systems can have major financial implications. The maximum fine for corporations under OHSA is $1.5 million, with additional penalties and WSIB premium increases often following a serious incident.
What Qualifies as Proper Skylight Fall Protection?
There are generally three compliant ways to address fall hazards on rooftops due to skylights in Ontario:
1: Engineered Skylight Screens
These are metal or polycarbonate grids that mount securely over the skylight, tested to meet impact resistance standards. They don’t interfere with light transmission and are ideal for permanent fall protection without restricting access.
Skyline Group’s skylight safety products fall into this category, offering solutions that are non-penetrating, easy to install, and designed to fit various skylight types and sizes.
2: Rooftop Skylight Guardrails
These are freestanding or fixed guardrails that enclose the skylight and prevent workers from walking or stepping on the surface. They are effective in high-traffic areas where access is necessary around the unit.
Skyline’s rooftop skylight guardrails use modular aluminum systems that don’t require roof penetration, making them especially useful for older roofs where waterproofing is a concern.
3: Fall Arrest or Restraint Systems
These require workers to wear harnesses connected to an anchor system, restricting movement toward the skylight. While effective when used properly, these systems rely heavily on training, enforcement, and consistent PPE usage – factors that can vary widely.
What’s the Best Approach for Commercial Buildings?
There is no one-size-fits-all answer, but for most property managers seeking the best skylight safety system for commercial buildings, passive protection is the most reliable. Why? Because it works without relying on behavior, training, or PPE. It protects every person on the roof – contractors, inspectors, maintenance staff – whether they’re properly equipped or not.
Skyline Group recommends a tiered approach, beginning with a hazard assessment followed by installation of fixed safety systems such as skylight screens or guardrails. Our team works across Ontario, helping property managers identify at-risk areas and implement skylight safety systems that meet or exceed all provincial requirements.
Fall Protection for Rooftop Skylights: FAQs
Yes, skylights are legally considered fall hazards under Ontario’s Occupational Health and Safety Act (OHSA). According to Section 26.3 of the Construction Projects Regulation (O. Reg. 213/91), any opening on a work surface - such as a skylight - must be guarded or covered with material that can support any loads that may be imposed upon it. Even if a skylight appears solid, if it cannot withstand the weight of a person or equipment, it must be treated as a potential fall-through hazard. Non-compliance can lead to substantial fines or liability in the event of injury.
Ontario regulations do not mandate one specific type of fall protection for skylights - they require a solution that reliably prevents falls through openings. Acceptable systems typically include non-penetrating skylight screens, rooftop skylight guardrails, or engineered covers that can support the maximum potential load. Each solution must meet or exceed CSA safety standards and be suitable for the specific rooftop environment. For flat commercial rooftops, modular systems are often preferred for their ease of installation and long-term durability without compromising the roof membrane.
Leaving skylights unprotected can expose building owners to significant legal, financial, and reputational risks. Beyond potential fines under OHSA, a fall incident can result in expensive litigation, increased insurance premiums, and even criminal liability under the Bill C-45 amendments to Canada’s Criminal Code. There’s also a human cost - many workplace fatalities occur from relatively low heights, often through fragile skylight surfaces mistaken for solid ground. Installing compliant fall protection is a simple, cost-effective step to prevent devastating consequences.
Protect Your People, Company and Brand with Skyline Group
Don’t leave your skylights to chance. Visit Skyline Group’s Skylight Safety Solutions to explore fall protection options tailored for Ontario commercial properties. Alternatively, reach out to one of our rooftop safety experts or book an Onsite Consultation now.
