Most visitors photograph Comuna 13's walls as a single category: "street art." But the neighborhood's surfaces hold at least five distinct making-traditions, each with its own tools, speed, economics, and lineage. A hand-brushed community mural and a stencil piece three meters away were made by different processes, on different timelines, often for different reasons. Learning to tell them apart is the fastest upgrade you can give your visit — it turns a photo walk into reading.
1. Brush Murals: The Slow Tradition
The large narrative walls — the ones depicting community memory, faces, and the neighborhood's history — are frequently brush-and-roller work, sometimes in combination with aerosol. Brush murals descend from the Latin American muralism tradition more than from graffiti culture: think planned compositions, community consultation, scaffolding, and days or weeks of work rather than hours.
How to recognize it: visible brushwork in large color fields, smooth blended gradients on faces, crisp painted edges that follow drawn outlines, and compositions that clearly respond to the wall's architecture — doors and windows incorporated rather than ignored. Brush work also ages differently: it fades evenly rather than chalking the way some aerosol does.
Why it matters here: the biggest memorial pieces — including works engaging with Operation Orión and the neighborhood's memory of the violence — tend toward this deliberate mode. Slowness is part of the meaning; these walls were sat with, not hit.
2. Aerosol Pieces: The Graffiti Lineage
Spray work is Comuna 13's connection to global graffiti and hip-hop culture — the tradition that arrived alongside rap and breaking and became one of the neighborhood's four elements of expression. Aerosol ranges from quick lettering to virtuosic character work, and the neighborhood's best spray painters move between styles fluidly.
How to recognize it: soft fades and glows impossible with a brush, controlled overspray halos around shapes, cutting (crisp edges made by spraying over a masked or re-outlined boundary), and the signature vocabulary of graffiti lettering — 3D blocks, highlights, force fields. Look close at a smooth color transition: aerosol fades have a fine dot-mist texture; brush blends show stroke direction.
3. Stencils: Speed, Repetition, Message
Stencil work — cutting an image into board or acetate and spraying through it — is the technique of speed and repeatability. Globally it's the political street artist's tool of choice, and in Comuna 13 you'll spot stencils doing what stencils do everywhere: sharp single images, repeated motifs, text-forward messages, and small interventions in the gaps between the big walls.
How to recognize it: uniform hard edges everywhere (nothing hand-wavers), bridges — the little connecting tabs that hold a stencil together, visible as breaks in outlines — and repetition: see the same image twice in the neighborhood and you're almost certainly looking at a stencil.
4. Wheatpaste and Paste-Ups
Work made on paper in a studio, then glued to the wall. Paste-ups let artists produce detailed imagery impossible to execute quickly on-site, and they're inherently temporary — sun and rain peel them on a timescale of months. In a neighborhood with heavy weather and heavier foot traffic, surviving paste-ups are usually recent ones.
How to recognize it: a visible paper edge, wrinkling or bubbling under the surface, and photographic or fine-lined imagery beyond what wall texture allows. Peeling corners are the giveaway.
5. Mosaic and Relief: The Permanent Register
Scattered through the comuna are works in tile, mosaic, and sculpted relief — the most durable register, often used for commemorative pieces meant to outlast paint cycles. Where paint is the neighborhood's conversation, mosaic is its stone inscription: slower to make than anything else on this list and essentially permanent.
Why Technique Maps to Meaning
| Technique | Time to make | Lifespan | Typical register |
|---|---|---|---|
| Brush mural | Days–weeks | Years (with restoration) | Community memory, commissioned narrative |
| Aerosol piece | Hours–days | Years, until repainted | Style, identity, hip-hop lineage |
| Stencil | Minutes on-site | Months–years | Message, repetition, commentary |
| Wheatpaste | Minutes on-site | Weeks–months | Detail work, ephemeral statements |
| Mosaic/relief | Weeks | Decades | Commemoration |
The pattern worth noticing: the more a work engages the neighborhood's collective memory, the more durable and deliberate its technique tends to be. The more it engages style, the more it lives in paint's faster cycles. That's not a rule — artists break it constantly — but it's a real gravity.
Watching Technique Live
Artists work in the neighborhood regularly — repainting, refreshing, and making new pieces — and some tour formats include watching (or trying) aerosol technique with working artists. If process interests you more than product, those workshop formats are the direct route; the technique differences described here become obvious within your first thirty seconds holding a can.
FAQ
Do the artists mix techniques in one piece?
Constantly — brush base layers with aerosol detail is one of the most common hybrid workflows on large walls, and stencils get incorporated into freehand compositions. Pure single-technique walls are actually the minority among major pieces.
Is one technique more "authentic" to Comuna 13?
No. The aerosol/hip-hop lineage is central to the neighborhood's story, but the brush-mural tradition carries much of its memory work, and the techniques coexist by design. Ranking them misses how the culture actually functions.
Where can I learn the terms artists use?
Our graffiti glossary covers the working vocabulary, from tags and pieces to buffing and productions.