PU Leather Office Chairs: The Flaking, Off-Gassing Downside of Synthetic Leather
PU leather office chairs off-gas VOCs when new and shed microplastic flakes as the coating breaks down over time.
"PU leather" office chairs use a polyurethane coating bonded to a fabric backing to imitate real leather at a fraction of the cost. Two separate issues come with that coating: new chairs off-gas VOCs from the polyurethane and the adhesives used to bond it (the source of that distinctive "new chair smell"), and as the coating ages, it's prone to cracking, peeling, and flaking — shedding microplastic particles into your home or office air and onto surfaces. Neither issue is acute or dangerous in the way an accident hazard is, but both are avoidable by choosing mesh or genuine fabric upholstery instead.
What "PU Leather" Actually Is
PU leather (sometimes called "faux leather" or "vegan leather") is a fabric backing coated with a layer of polyurethane plastic, textured and finished to visually resemble genuine leather. It's far cheaper than real leather and doesn't involve animal products, which is why it's become the default upholstery on mid-range and budget office chairs.
The tradeoff is durability and chemistry: the polyurethane coating is a plastic film, not a natural material, and plastic films degrade with UV exposure, body oils, friction, and time in a way that tanned leather resists far longer.
Two Issues: New-Chair Off-Gassing and Aging Breakdown
Polyurethane coatings and the adhesives used to bond them to fabric backing release volatile organic compounds when new, similar in kind (though not necessarily concentration) to the off-gassing documented from polyurethane foam furniture. This fades over weeks as the VOCs dissipate.
Polyurethane production uses isocyanates, a class of chemicals recognized by OSHA as respiratory sensitizers — primarily a manufacturing-floor concern rather than a finished-product one, but part of why some office furniture standards test for residual VOC emissions.
PU leather is well known among furniture reviewers and consumers for cracking, peeling, and flaking within a few years of regular use, especially with sun exposure or in high-friction areas like armrests and seat edges. As it flakes, it sheds small plastic particles into the surrounding environment.
This is a chronic, low-grade issue — comparable to microplastic shedding from synthetic carpet or clothing — not an acute hazard requiring immediate action.
Choosing a Chair That Avoids Both Issues
Mesh-backed chairs avoid both problems entirely. Woven mesh doesn't off-gas the way a PU coating does and has nothing to flake, while also being more breathable for extended sitting.
Genuine fabric upholstery is another solid option, with far better long-term durability against cracking than PU leather, though it can absorb odors and stains that leather-type surfaces resist.
If you specifically want the leather look, real leather is more durable against cracking/flaking than PU, at a higher price point, and doesn't involve the same plastic-coating off-gassing.
For an already-owned PU chair showing wear, a seat cover or cushion over cracked areas reduces both the appearance issue and the ongoing particle shedding.
Better Alternatives
A fully mesh-backed ergonomic office chair with no PU leather coating to off-gas or degrade over time.
An ergonomic task chair with genuine fabric upholstery instead of PU leather, avoiding coating off-gassing and flaking.
Sources
- California Air Resources Board — furniture and VOC emissions testing background — https://ww2.arb.ca.gov/
- OSHA — Isocyanates safety and health topics — https://www.osha.gov/isocyanates
- BIFMA furniture emissions and sustainability standards — https://www.bifma.org/
Explore Connections
Dive deeper into related hazards, similar chemical profiles, or safe material equivalents.