How-To & Guides 6 min read • Jan 13, 2026

Commercial Paint Takeoff Guide: Labor Hours, Spread Rates & Mil Thickness

Formulas, spread rates, and production standards for commercial painting contractors bidding drywall, hollow metal doors, and structural steel in Texas.

Accurate commercial painting bids balance material coverage with realistic labor production hours. Level of finish, surface porosity, and application method (spray-and-backroll vs roller) determine your true cost per square foot.

Commercial Drywall Spread Rates

New commercial gypsum board drinks paint on the primer coat. Estimating rules of thumb for Texas commercial tenant buildouts:

  • PVA Primer / Sealer: 275 - 300 sq ft/gallon over new Level 4 drywall tape joints.
  • First Topcoat (Eggshell / Satin): 325 - 350 sq ft/gallon.
  • Second Topcoat: 350 - 400 sq ft/gallon.

Hollow Metal Doors & Structural Framing

Never measure doors by square footage alone. Commercial estimators bid hollow metal frames (HMF) and slab doors by piece counts: 1 door frame = 0.5 labor hours; 1 flush slab door (both sides + edges) = 0.75 labor hours.

Frequently Asked Questions

What is the standard theoretical spread rate for commercial latex paint?

Most commercial latex topcoats have a theoretical spread rate of 350 to 400 square feet per gallon at 1 mil dry film thickness (DFT). Realistic jobsite coverage on level 4 drywall is 300 to 325 sq ft/gal.

How is dry film thickness (DFT) calculated from wet film thickness (WFT)?

DFT = WFT × (% Volume Solids of the coating). For example, a coating with 50% solids applied at 6 mils WFT dries to exactly 3 mils DFT.

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