Marking with Purpose: How Paint, Stakes, and Flagging Drive Accuracy

A construction stake with a neon orange flag tied to it.

Every successful construction project begins with accurate layout, and layout depends on clear, visible, and reliable survey markings. From small residential lots to multi-phase commercial developments, the right field marking tools are the foundation of build accuracy.

At Stevenson Supply & Tractor Co., we’ve supported Northern California contractors and grading crews for decades. One of the most overlooked (but mission-critical) parts of your jobsite toolkit is your marking paint, lath, stakes, hubs, and flagging. These basic contractor surveying supplies are the language of layout, and if that language isn’t clear, your project is already behind.

This blog breaks down:

  • The importance of marking paint and its field applications
  • When and why to use lath, hubs, stakes, and whiskers
  • How flagging colors communicate survey intent
  • Best practices for communicating layout across trades


Let’s dig into the tools that keep your plans on the ground and your project on track.

Marking Paint: The Jobsite's First Line of Communication

Marking paint is often the first thing a surveyor or field crew applies to raw ground and it sets the tone for everything that follows. Whether it’s property boundaries, trench locations, cut/fill lines, or utility routes, marking paint turns your plans into visible, physical instructions.

Field Applications

  • Boundary and right-of-way lines
  • Excavation limits
  • Utility trench routes
  • Fence or wall alignments
  • Centerlines and offsets for concrete, curb, or structure layout

Types of Paint

  • Inverted Tip Aerosol Paint: Standard for layout crews. Applied upside down with trigger wands or by hand. Quick-dry formulas prevent smearing during wet weather.
  • Water-Based Paint: Eco-friendlier for sensitive areas or hardscapes, but may fade quicker.
  • Solvent-Based Paint: Durable and fast drying, preferred for dusty or uneven soil conditions.

Colors & Meaning

Following APWA (American Public Works Association) color codes helps avoid costly mistakes or dangerous surprises:

  • White – Proposed excavation or survey layout
  • Pink – Temporary survey markings (non-permanent, used by surveyors)
  • Red – Electric power lines
  • Yellow – Gas, oil, steam
  • Blue – Potable water
  • Green – Sewer or drain
  • Orange – Communication, alarm, or signal lines
  • Purple – Reclaimed water


Note:
For layout, white and pink are your primary go-tos. They stand out on soil and are universally recognized by inspectors, utility locators, and subcontractors.

Best Practices

  • Shake paint thoroughly before every use
  • Apply dots or dashes (not solid lines) for trench routes
  • Use a cap-mark or X-mark when placing hubs or nails
  • Re-mark every few days in high-traffic or active zones

Lath, Hubs, and Stakes: Setting the Ground Rules

Lath, hubs, and stakes provide the physical reference points used for measurements, alignments, and elevations. While they seem like simple pieces of wood, each type serves a specific role:

  • Hubs: Short stakes (usually 2×2 hardwood) driven flush or slightly below grade. Mark precise locations for vertical or horizontal control.
  • Lath: Tall, thin strips of wood (usually 1×2) set next to hubs and used to display written information like elevations, offset distances, or notes.
  • Stakes: Larger or longer than hubs, often used for general layout or boundary indicators.
  • Guard Stakes: Protect hubs from traffic or equipment; often flagged or painted to increase visibility.

When to Use What

 

Tool

Use Case

Hub

Centerline or point reference at ground level

Lath

Visual marker to display notes/elevations next to a hub

Stake

Property corners, rough layout, or control points

Guard Stake

Used in high-traffic areas to protect reference points

Layout Examples

  • Concrete slab layout: hub marks the corner point; lath indicates offset and elevation (e.g., “5’ Off CL, EL=100.25”).
  • Road grading: hubs run down centerline at intervals; blue or green paint may be added to indicate utilities.


Pro Tip:

 Always set lath on the same side of the hub for consistency, typically north or west unless otherwise noted. This ensures layout crews understand which direction to measure offsets from.

Flagging Tape: Visual Communication That Moves with the Wind

Flagging tape (sometimes called ribbon or survey tape) adds visibility and information to your ground references. It’s lightweight, non-adhesive, and often tied around lath, stakes, or trees.

Why Flagging Matters

  • Indicates location of important survey points
  • Enhances visibility in vegetated or wooded areas
  • Shows intent across trades: plumbing, electrical, site work
  • Withstands weather better than paint in certain conditions

Color Coding

Like paint, flagging colors often follow APWA conventions, though they can also reflect internal project standards or subcontractor preferences.

Common usage

  • Pink – Surveyor control
  • White – Layout lines (structure or pad outlines)
  • Red – Electrical
  • Blue – Water
  • Green – Sewer
  • Yellow – Gas or fuel
  • Orange – Communication or CATV
  • Striped (red/white, black/yellow) – Danger or “do not disturb”

Best Practices

Why Materials and Method Matter

Contractors often underestimate how much productivity is lost due to unclear or missing layout. Crews guess, double-check, or wait for clarification, and that costs time and money.

Case Study: Fence Install Delay

A contractor ordered fence installation based on stakes that were moved by a landscape crew. The original paint was rained out, and the only remaining marks were unflagged lath with no legible notes. The fence crew ended up re-shooting the line, costing two hours of labor, across 3 crew members.

Lesson

Proper layout includes redundancy, paint + hub + lath + flag = clarity. Don’t rely on one tool to tell the story.

Common Mistakes to Avoid

  • Using spray paint alone in high-traffic areas – gets worn away quickly
  • Setting stakes without labeling – leads to confusion between trades
  • Mixing color codes – can cause layout to be misread or ignored
  • Failing to protect hubs – one tire track can wipe out a full day of survey work
  • Improper staking in clay soils – which shift over time; use longer or treated stakes in unstable ground

How Stevenson Supply & Tractor Co. Can Help

We stock:

  • Professional-grade marking paint in all APWA colors, including upside-down aerosol cans and long-lasting solvent options
  • Survey lath, hubs, stakes, and guard stakes in hardwood or softwood depending on your site conditions
  • High-visibility flagging in a full range of color codes, UV-stable for long-lasting markings
  • Paint applicators, cap markers, and layout accessories to keep your team productive


Need help deciding how much to order or how to prep a site with multiple subs? Our team has field experience and local project insight, we’ll help you build a custom kit based on your crew size, soil conditions, and project complexity.

Build with Clarity. Mark with Confidence.

Whether you’re staking the first point on a subdivision or marking trench paths for utilities, your layout markings are the language of the jobsite. Paint, lath, stakes, and flagging may be simple tools, but they carry critical information that ensures accurate execution across every trade.

Cut corners here, and you invite miscommunication, rework, or even safety risks. Invest in quality, consistency, and proven methods, and your entire project will benefit.

Visit Stevenson Supply & Tractor Co. for the full layout toolbox because the first mark you make should be the last one you need.

Give us a call at (707) 575-3335 or contact us online to speak with one of our experts about your project.

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