A property manager sent me photos of rust damage on her balcony railings and asked if it was “extensive” — the answer was on the underside of the top rail, not in the photos
A property manager emailed me a dozen photos of balcony railings on a nine-storey building and asked one question: is this extensive, or can we just paint it? From the photos it looked like a repaint. On site, with a putty knife and ten minutes on the third floor, it was two different jobs — most railings were a coating scope and about a fifth were not. This post covers how I grade rust on a railing, where the worst of it hides from a camera, and which stage moves a railing off the painting budget and onto a capital line. For property managers and condo boards, not homeowners.
1. Rust has four stages, and only the first two are a painting scope
The first stage is bloom — orange staining on the surface with the metal underneath still hard and smooth. The second is scale, where the rust has thickened into flakes that lift the coating around them. Both are prep-and-recoat work. The steel is all still there; the job is getting back to sound metal and putting a proper primer and topcoat on it.
The third stage is pitting. Run a fingernail across a cleaned patch and it catches in small craters. The metal has started to go, but light pitting can still be repainted if the pits are cleaned out and sealed with the right primer — it will just never look like new steel again.
The fourth is section loss: a thin edge, a hole you can see daylight through, a post base that crumbles under a screwdriver. That is not a painting scope, and no coating on the market turns it back into one.
What to look at: Pick three railings and scrape the worst spot on each with a putty knife. If the knife stops at hard grey metal, you are in stage one or two. If it sinks or goes through, keep reading.
2. “Extensive” is a word about location, not colour
Boards judge rust by how much orange they can see from the ground. That is the wrong measure, because railings rust worst where nobody photographs: the underside of the top rail, the inside of hollow tube sections, the back of the pickets, and the base plate where snowmelt sits for four months.
A railing can look 80 percent clean from the balcony next door and be failing at every post base. The reverse is also true — a railing streaked orange from top to bottom is often just bloom on a sound section, ugly and entirely paintable. The grade gets decided in the bottom two inches of the posts and under the top rail, with a flashlight.
What to look at: Water weeping from a small hole or seam in a hollow rail after rain. That means the section is rusting from the inside, and what you see outside is the last stage of it, not the first.
3. The count that turns a repaint into a capital item
On most buildings the grade is mixed: bloom and scale on the majority, pitting on a few exposed elevations, section loss on a handful of post bases. The scope splits three ways — repaint, repair-then-repaint, and replace — and an honest quote sorts each railing into one of those bins instead of averaging the building into one number.
What tips the whole building is the third bin. Once section loss shows on more than a few posts per elevation, the arithmetic moves: cutting out and welding in new base sections one post at a time on an occupied building costs more per post than fabricating a new panel. At that point the painting line in the reserve study is the wrong line, and the board should know it before approving a coating quote.
There is a second reason the count matters. A balcony guard is a life-safety element. When metal is actually missing from it, whether it is still adequate is an engineer’s decision, not a painter’s, and I say so in writing rather than paint over it.
What to look at: Count the posts with rust at the base that a screwdriver can dent. If it is one or two on a nine-storey building, note them for repair. If it is one or two on every floor, ask for a replacement number alongside the repaint number.
4. What the photos should have shown
The set that property manager sent me was all long shots from inside the units. Useful photos for grading rust are close and low: the base of each post, the underside of the top rail, a picket-to-rail weld, and one shot of the worst spot after a scrape. Six photos like that from three balconies tell me more than fifty from across the courtyard. If the last repaint failed inside two or three years, say so — a coating that failed on sound steel is a prep problem, and one that failed on pitted steel was always going to.
What to look at: Before you send photos to anyone, add one scraped spot. The grade lives under the paint, not on it.
What to do if you’re seeing any of this
If your railings have crossed from orange to flaking, get them graded before you get them quoted. I walk balcony railings for condominium corporations and property managers across Ottawa — Kanata, Nepean, Barrhaven, Orleans, Stittsville and Westboro — sort them into repaint, repair and replace, and put the count in writing so the board is approving the right line. You can read what a proper balcony railing rust repaint involves on the service page. Call 613.325.3011 or email yasir@heims.ca.
— Yasir, HEIMS Construction
HEIMS Construction is an Ottawa-based commercial painting and drywall contractor serving condominium corporations, property managers and institutional clients across the Ottawa area. Fully licensed and insured, with $5M commercial general liability coverage.