July 23, 2026
When a brand comes to us for a wheatpaste poster campaign, the deliverable they are looking for is clear: their artwork, on walls, in the right neighbourhoods, documented, and reaching the audience they are trying to reach. What is less visible is the process that makes that outcome possible—and the ways that process breaks down when the agency running it does not know what it is doing.
At American Guerrilla Marketing, we have run wheatpaste campaigns in New York, Los Angeles, Chicago, Boston, Montreal, Toronto, London, and other markets. The craft details of this format—how you select surfaces, how you mix paste for different conditions, how you run a night install team at scale, how you document the work in a way that stands up to client scrutiny—are the difference between a professional operation and a crew that staples some photocopies to telephone poles and calls it a campaign.
This guide covers the end-to-end process: from the first location scout through print production, paste mixing, night installation, and morning documentation. At the end, we include a framework for evaluating any wheatpaste agency—the questions to ask, the red flags to watch for, and what a professional operation looks like versus one that will waste your budget and leave you with nothing you can use in a post-campaign report.
The location scout is the most important phase of a wheatpaste campaign and the one that most underqualified agencies skip or abbreviate. A scout is not a Google Maps review of a neighbourhood. It is a physical walkthrough of the target areas, conducted with the campaign brief in mind, that evaluates specific surfaces against a defined set of criteria and produces a placement plan that the install team can execute precisely.
Not every wall is a paste surface. The criteria for a strong paste surface are specific and non-negotiable if the campaign is going to perform as planned.
Surface texture matters. Brick, smooth concrete, plywood panel boards, and rendered masonry are all strong paste surfaces that provide good adhesion. Glass, metal, polished stone, and heavily sealed painted surfaces are weak paste candidates where the adhesive may not bond effectively. A heavily pitted or crumbling brick surface can also cause problems—the paste adheres unevenly and the paper tears when the poster contacts the irregular surface at the edges.
Foot traffic quality is the primary audience criterion. A wall with the right texture on a street where nobody walks is not a campaign placement—it is a tree falling in the forest. We evaluate the daily foot traffic pattern on the approach to every candidate surface: what time of day does the most audience-relevant traffic pass it, in which direction are those people moving, how far from the wall is the primary pedestrian path, and what is the sight line from the pedestrian’s vantage point to the wall surface.
Sight line and visibility are practical requirements that surface photography can obscure. A wall that looks large and prominent in a photo taken directly in front of it may be invisible to a pedestrian at street level because the view is blocked by a parked van, a scaffolding structure, or a tree canopy. We assess sight lines from the actual pedestrian positions at every candidate surface—standing at the kerb, walking the approach, looking up from the sidewalk at the angle that a real pedestrian would see the surface.
The competitive context of the surface matters. A surface already saturated with other posters is a lower-priority placement than a surface that is relatively clean. Freshly pasted surfaces have better visual impact because the campaign artwork is not competing with layers of older material beneath it. We note the paste density at every candidate surface and factor it into the placement priority ranking.
Scout documentation: Our scouts photograph every candidate surface with location metadata, note the address and nearest cross street, assess the surface type and condition, estimate the daily foot traffic volume and timing, and record any sight line obstructions. That documentation feeds directly into the placement plan that the production and install team works from. If a surface cannot be properly documented in the scout, it does not go in the plan.
From the scout, we build a placement plan that maps every confirmed surface location, specifies the poster size and quantity for each placement, and notes any surface-specific installation considerations (height, paste prep requirements, sight line optimization). The placement plan is the install team’s operational document—every person on the crew knows exactly where they are going, in what order, and what they are installing.
A strong placement plan is also a client communication document. It lets the client see the exact surfaces their campaign will run on, with enough location specificity to verify the plan against their knowledge of the target market. Clients who have reviewed a placement plan before a campaign goes out come back to us with useful input—”actually, we specifically want to hit this block near the venue” or “that surface is right next to a competitor’s retail location, can we avoid it?” That input improves the campaign. It only happens if the plan is specific enough to review.
Wheatpaste poster print production has variables that affect campaign performance in ways that are not obvious from looking at a finished print. Paper weight, ink type, print size, and how the poster is prepared for the field are all production decisions that have real consequences at install time and for post-install lifespan.
Paper weight—measured in grams per square meter (gsm)—determines how the poster handles the paste application process and how it survives in the field after installation. The practical range for outdoor wheatpaste is 80 to 130 gsm.
Lighter paper (70-80 gsm) is cheaper per unit but tears more easily during installation and is more vulnerable to rain, humidity, and physical contact after it is on the wall. For campaigns in dry climates or covered surface environments, lighter paper can work. For outdoor installations in rain-prone markets, lighter paper is a false economy—it fails before the campaign window closes and you end up with shredded, unreadable posters on the wall that do not serve the campaign and do not photograph well.
Heavier paper (100-130 gsm) is more expensive per unit but handles paste better, tears less during installation, and holds up significantly better in outdoor conditions. It also accepts ink with better color saturation and detail retention, which matters for artwork with fine linework or strong color contrast. Our standard for most campaigns is 100 gsm minimum; for winter or high-rain-exposure markets we specify 110 to 130 gsm.
The maximum viable size for a single-sheet paste poster is typically around 24 by 36 inches for a standard production run. Larger format campaigns—36 by 48, 48 by 72, or mural-scale installations—use multi-panel prints that are assembled during installation. The panel assembly approach requires more precise install execution but allows for larger-than-single-sheet visual impact that commands significantly more attention than a standard poster size.
Most paste poster campaigns are printed on large-format solvent or latex inkjet printers. Solvent inks produce more vivid color on uncoated papers and have better outdoor durability than aqueous inks, but they require ventilated handling and may not be the right choice for all production environments. Latex inks have improved significantly and are suitable for most campaign production.
The key production variable for color-sensitive artwork is the paper’s ink absorption profile. Uncoated papers absorb more ink into the paper fiber, which can reduce color vibrancy compared to what the artwork looks like on screen. Proofing on the actual campaign paper stock before the full print run is non-negotiable for campaigns where color accuracy is important—a brand that has spent years establishing a specific Pantone color as its identity needs to see a proof before approving a 5,000-unit print run.
Larger posters are more visually impactful but more technically demanding to install cleanly. A 24 by 36 inch single-sheet poster can be handled by one person in normal field conditions. A 36 by 48 inch poster requires two people to place cleanly, and anything larger than that requires a team of three or four to manage alignment, paste application, and smoothing simultaneously.
The paste application sequence for large-format posters is critical: paste the wall surface first, apply the poster, then paste over the top with a finishing coat. The wall pre-paste creates a bonding layer; the poster paste-over seals the edges and smooths out air bubbles. Skipping the wall pre-paste on large formats is the fastest way to create a poster that bubbles, peels at corners, and falls off the wall before the campaign window ends.
The paste is the material that determines whether the installation stays on the wall for its intended duration or peels off in the first rain. Most people who have not worked in this format underestimate how much the paste formulation matters. Two campaigns can use identical paper and identical print production and produce very different field results based on paste quality alone.
Traditional wheatpaste is made from wheat flour or wheat starch cooked with water until the mixture reaches a translucent, gel-like consistency. The chemistry is simple: the starch granules swell and rupture during cooking, releasing a natural adhesive compound that bonds effectively to porous surfaces. Flour-based paste is inexpensive and is genuinely effective on clean, porous masonry in dry conditions.
Commercial paste formulations—typically methylcellulose-based or incorporating additional synthetic bonding agents—offer more consistent performance than flour paste across a wider range of conditions. Temperature stability is better (the paste does not change viscosity as dramatically with temperature fluctuation), rain resistance is improved because the synthetic binders are less water-soluble than straight wheat starch, and the pot life is longer (commercial paste stays workable for longer before it needs to be refreshed in the field).
For most professional campaigns, we use a blend: a wheat starch or flour base for adhesion quality and paper compatibility, with commercial methylcellulose or similar added for weather resistance and working consistency. The specific ratio varies by market climate, season, and surface type. A summer campaign in Los Angeles uses a different paste blend than a late-fall campaign in Chicago or a year-round campaign in Montreal.
Paste is mixed on the day of the install, not in advance. Paste that sits for multiple days before use degrades—the starch begins to ferment (which affects adhesion properties) and the mixture separates in a way that requires re-mixing and may not restore to original working consistency.
We mix paste in batches sized to the install volume: enough for the night’s placements, with a small buffer for touch-ups and re-application where needed. The mixing equipment—a portable electric mixer or a heavy-gauge whisk for smaller batches—needs to reach a consistent, lump-free texture. Lumpy paste applies unevenly, creates ridges under the poster, and produces an installation that does not read cleanly from a distance.
Field paste containers are wide-mouthed buckets that allow a standard paste brush to be fully loaded in a single dip. The brush—typically a 4 to 6 inch wide paste or wallpaper brush—needs to hold enough paste to cover a full poster panel in one pass without reloading at the mid-point. Running out of paste mid-poster is one of the most common technical failures in amateur installs and produces a result that is immediately visible in the field.
Paste quality check: Good working paste coats the brush smoothly, drips off slowly rather than running, and leaves a translucent wet layer on the surface rather than a white opaque one. White opaque paste is either too thick (excess flour ratio) or has not been cooked fully and will not bond correctly. If it looks chalky and opaque on the wall, it is not going to perform.
Wheatpaste campaigns are installed overnight—not because daytime installation is impossible, but because the install window and the quality of execution are both better at night. Foot traffic is lower, which means the install team can work at the pace the work requires rather than navigating around pedestrians. Surfaces are generally drier after a day of sun than they would be during a rain-affected afternoon. And the morning-after moment—when the audience encounters the fresh installation as they move through the city in daylight—is the first impression the campaign makes, and it lands with maximum visual impact when the poster is fresh.
Night install teams for a wheatpaste campaign are sized to the scope: a single-market campaign with 50 placements might run with a team of 3 to 4 people; a multi-city campaign with 200 or 300 placements requires multiple simultaneous crews coordinated centrally. The standard team structure has a driver/logistics coordinator handling the vehicle and supplies, and installation specialists who work each surface.
We route install teams on a pre-planned sequence that minimizes driving time between placements and groups geographically proximate surfaces into efficient clusters. An install team that is wandering through a neighbourhood without a sequence plan is going to add 30 to 50 percent to their install time from navigation inefficiency alone. The placement plan from the scout phase feeds directly into the install route sequence.
Each installer carries a paste bucket, a brush, a squeegee for smoothing large-format panels, and a dry cloth for cleaning paste overspray from adjacent surfaces. The tool kit is light and portable because the installer needs to move quickly between placements. Nothing in the kit is irreplaceable—spare brushes, spare containers, extra paste—because equipment failures during a night install are resolved in the field, not escalated to a supply run.
Install timing is calibrated to the specific neighbourhood. A campaign in SoHo in New York runs differently than one in the Plateau in Montreal or in Shoreditch in London. In SoHo, bar and restaurant traffic keeps the streets active until 2:00 or 2:30 AM, so installs begin at 12:30 to 1:00 AM and run until 4:00 or 5:00 AM. In the Plateau in Montreal, the streets are quieter by midnight on weeknights, and installs can start earlier. In Camden in London, Friday and Saturday nights run late and the install window needs to account for the post-midnight crowd moving through the market area.
The goal is not to avoid all human contact—some passersby are going to see the install happening, and that witnessing can itself be interesting content for a brand documenting the campaign. The goal is to avoid the conditions that create operational difficulty: dense pedestrian crowds that require constant work stoppage, building management or security presence that needs to be navigated, and the general friction that high-foot-traffic environments add to a process that works better with space to operate.
Before the poster goes up, the installer assesses the surface condition. Dry surfaces are preferred. A surface that has been rained on and is still wet needs to be assessed for whether the wetness will affect paste adhesion—a damp surface is often workable, but a surface with standing water pooled in the texture will push the paste away from the surface rather than allowing it to bond. Light surface moisture is fine; pooled water is a skip and a reschedule.
Old posters from previous campaigns on the same surface are not necessarily a problem. A well-bonded existing layer of paste and paper can actually provide a better adhesion surface than bare masonry because the smooth paper texture accepts new paste more evenly than rough or pitted stone. Flaking, poorly bonded old paper needs to be assessed: if it is going to lift and take the new poster with it, it needs to be removed or the placement needs to be shifted to a clean section of the surface.
The installation is only half of the deliverable. The documentation is how the client knows the campaign ran, where it ran, in what condition, and at what quality of execution. Professional documentation is the difference between a campaign that produces reportable evidence and one that produces anecdotes.
We photograph every installation on the morning after the night install—in daylight, in dry conditions if possible, with consistent photographic framing that shows both the poster clearly and its environmental context. The environmental context is as important as the poster itself: a photo of a poster that shows the street behind it, the surrounding neighbourhood architecture, the pedestrian environment proves the placement. A close-up photo of a poster that shows nothing but the artwork proves nothing about where it actually is.
The standard documentation photo set for each placement includes: a wide environmental shot that shows the placement in context (from across the street if possible), a medium shot at approximately 10 to 15 feet that shows the poster clearly at its readable size, and a close-up of the installation quality showing the corners and edges. Location metadata is captured with each photo so the client can verify address and placement coordinates against the placement plan.
Documentation in poorly-lit conditions—overcast mornings, surfaces in deep shadow, early morning in narrow lanes—requires adjusting for the light rather than using flash, which flattens the three-dimensionality of the surface and makes the poster look like a photoshop rather than a real installation. We use available light and wait for the right moment in the morning when ambient light is sufficient. A documentation photo taken at 4:00 AM in flash light is worse than no documentation photo at all.
Documentation as campaign asset: Strong installation photography does double duty—it satisfies the client’s proof-of-performance requirement and it produces campaign content that the brand can use organically in their own marketing. We shoot with this in mind: composition, light quality, and the relationship between the poster and the street environment should produce images that are worth using, not just images that prove the paste went up.
Our post-campaign reporting packages the documentation photography with a placement-by-placement inventory: address, surface type, poster size, installation date and time, and a condition rating on the morning after installation. For campaigns with multiple market cities, the report is organized by market. For campaigns with multiple installation windows, the report covers each window separately.
The report also captures any organic social documentation we identify—posts from passersby who photographed or interacted with the campaign, hashtag mentions, and any media coverage the campaign generated. Organic social content is not something we can fully control or predict, but on well-executed campaigns in the right neighbourhoods, it is consistently generated and it is consistently the most persuasive material in a campaign report because it shows real audience response.
The process described above is consistent across all our markets, but the specific execution varies significantly by city. Here is how the process plays out in our three highest-volume US markets.
New York is the most complex install environment we work in. The density of the city, the 24-hour activity level in the most desirable campaign neighbourhoods, and the competition for good surfaces all create operational challenges that require experienced teams. In Williamsburg, we typically run installs starting at 1:00 AM and work through to 5:00 AM to capture the surface cluster on Bedford Avenue, the Wythe corridor, and the side streets between the L train approach and the waterfront. Manhattan campaigns in SoHo and the Lower East Side run similar timing. The Bronx and upper Manhattan campaigns can often start earlier because the late-night activity pattern is different from Brooklyn and lower Manhattan.
LA campaigns are structured around the neighbourhood clusters that carry the most relevant audience for the campaign type: Fairfax and Melrose for streetwear and sneaker campaigns, Silver Lake and Echo Park for music and indie cultural campaigns, Venice and Abbot Kinney for lifestyle and premium consumer campaigns, and Highland Park for the East LA art and independent music audience. The install timing in LA is typically 12:00 AM to 4:00 AM, with the warmer and drier climate allowing slightly more flexibility on surface conditions than New York or Chicago markets.
Chicago campaigns concentrate in Wicker Park and Bucktown along Milwaukee Avenue and the North, Damen, Milwaukee triangle, in Logan Square along Milwaukee between Kedzie and the Logan Square Blue Line station, and in the Pilsen neighbourhood along 18th Street for campaigns targeting the Mexican-American and broader Latinx audience in Chicago’s South Side arts community. Chicago’s Midwestern weather patterns mean we are more likely to encounter rain-affected install conditions than in LA, and paste formulation for Chicago campaigns weights toward weather resistance accordingly.
There is a significant quality range among agencies offering wheatpaste campaign services. The differences are not always visible in a proposal document—they show up in the quality of execution, the reliability of the documentation, and ultimately in whether the campaign delivers the coverage and audience reach it was scoped to deliver.
An agency that cannot provide specific placement addresses before the campaign runs is not running a planned campaign—it is running a guerrilla operation with no accountability structure. You should know, before installation night, exactly where your posters are going.
Documentation photography taken in the dark or immediately after install—before daylight, before the paste has dried—is not genuine documentation. It proves the poster went up in the dark; it does not prove the installation held and the placement performed in daylight when the audience was actually there.
A single-person operation claiming to run 100 or more placements in a single night in a major city is likely overstating scope. Physical installation at that volume requires a team. An install operator who is running solo cannot physically produce high-quality installations at that pace and also handle driving, paste logistics, and documentation simultaneously.
Agencies that resist specific placement location disclosure—citing “proprietary surface networks” or “competitive confidentiality”—should be asked to explain why the client should not know where their campaign is running. Transparency about placement locations is a basic professional standard. Opacity is a sign that the surface network may not be as premium as represented.
| Process Phase | Professional Agency | Fly-by-Night Operation |
|---|---|---|
| Location scout | Physical walkthrough, documented with photos and addresses | Google Maps review or pre-set list with no current condition assessment |
| Print production | Specified paper weight, proofed on campaign stock | Cheap stock, no proofing, may use substandard printer |
| Paste formulation | Weather-appropriate blend, mixed day-of-install | Generic flour paste, no formulation consideration |
| Install team | Experienced multi-person crew, routed efficiently | One or two inexperienced people, no route planning |
| Documentation | Daylight photos with environmental context and location metadata | Dark or flash photos, no location verification, possible fabrication |
| Campaign report | Placement-by-placement inventory with photos and condition notes | A handful of photos and a claim about poster count |
The most obvious marker of professional wheatpaste work is the quality of the documentation photography. A professional campaign produces images that you want to look at—properly lit, properly composed, showing the installation in the context of a real place. When you see campaign documentation that looks like an afterthought, the campaign probably was an afterthought.
The second marker is placement precision. A professional agency can point to a map and show you exactly where every poster ran, at what size, and in what condition. That level of accountability requires a real scouting process, a real placement plan, and a real documentation workflow. Agencies that cannot show you this level of placement specificity are probably not operating with this level of process discipline on the back end.
The third marker is the client relationship. A professional agency tells you when something goes wrong—a surface that did not hold, a poster that came down overnight due to rain, a placement that did not execute as planned. An unprofessional operation delivers the billing whether the campaign performed as scoped or not and hopes you do not ask too many questions. We tell clients when an install encounters problems and we make it right, because our reputation in this format is built on the campaigns we deliver, not the ones we talk around.
A wheatpaste marketing agency manages the full process of a poster campaign from location scouting through print production, paste mixing, night installation, and morning-after documentation. The agency handles every operational aspect of getting a brand’s artwork onto walls in the right locations, verified and documented for client reporting.
Porous surfaces—brick, smooth concrete, rendered masonry, plywood—bond well with paste adhesive. The surface needs enough accumulated texture for the paste to grip, but not so much damage or instability that the material itself will detach. Foot traffic volume and quality, sight lines from pedestrian paths, and the competitive context of nearby poster saturation are all surface evaluation criteria alongside the physical substrate.
100 gsm is our standard minimum for outdoor campaigns. For rain-prone markets or winter conditions, we specify 110 to 130 gsm. Lighter paper is cheaper but tears more easily during installation and degrades faster in outdoor exposure. Heavier paper produces a better installation, better documentation photography, and longer lifespan in the field.
For professional campaigns, a blend is best. Traditional wheat starch provides good adhesion quality and paper compatibility; commercial methylcellulose or similar additives improve weather resistance and working consistency in variable field conditions. The specific blend is calibrated to the market climate and season—a Los Angeles summer campaign uses a different formulation than a Chicago fall campaign.
Lower foot traffic allows the install team to work at the pace the work requires. Surfaces are typically drier after a day of sun than they would be during a rain-affected afternoon. The morning-after moment—when the audience encounters the fresh installation in daylight—is the campaign’s first impression, and it lands with maximum visual impact when the poster is brand new.
Our primary US markets are New York, Los Angeles, and Chicago. We also run campaigns in Boston, Miami, and other US cities, as well as Montreal and Ottawa in Canada, and London and other international markets. Each market has its own field team with direct knowledge of the specific streets, surfaces, and campaign logistics for that city.
A complete post-campaign report includes daylight installation photography for every placement (wide environmental context shot, medium shot, and close-up of installation quality), a placement-by-placement inventory with address, poster size, installation date, and morning condition rating, and any organic social documentation generated by the campaign. The report should allow the client to verify coverage against the original placement plan.
Inability to provide specific placement addresses before the campaign runs. Documentation photography taken only at night or immediately after install. Single-person operations claiming to run 100-plus placements per night. Resistance to placement location disclosure. No clear protocol for installation failures. These are all indicators of an operation without the process discipline to deliver a reliable, accountable campaign.
Three to four weeks is the minimum for a standard single-market campaign that allows for proper scouting, print production, and install scheduling. Multi-city campaigns or campaigns tied to specific event dates need more lead time—four to six weeks is safer for complex briefs. Rush campaigns are possible in some cases; contact us with your date and we will tell you what is achievable.
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American Guerrilla Marketing — Los Angeles
Street-level campaigns in Los Angeles and nationwide. Wheatpasting, LED trucks, street teams, and more.
(646) 776-2770
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