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Tank Coatings & Linings

Exterior coatings and interior linings for storage tanks — petroleum and fuel tanks, potable water tanks and towers, chemical and process tanks — that stop corrosion, prevent leaks and contamination, and extend tank service life inside and out. Find tank coating and lining contractors near you and connect with local providers through Scaffold Exchange.

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What Are Tank Coatings & Linings?

Definition: Tank coatings and linings are protective systems applied to storage tanks. Exterior coatings protect the tank shell, roof, and appurtenances from weather, UV, and atmospheric corrosion, while interior linings protect the floor, shell, and roof from the stored product and from water and sludge that collect at the bottom. Together, they preserve the tank's structural integrity, prevent leaks, and keep stored products free from contamination.

Storage tanks face corrosion from both sides. Outside, rain, humidity, and sunlight break down coatings and attack the steel. Inside, stored fuels, chemicals, and water — along with the water and sediment that settle on tank floors — can cause pitting and wall loss that may go unseen until a leak occurs. Tank bottoms in particular are a common source of failures, which is why bottom linings are often required on petroleum tanks.

Tank coating projects are typically scheduled with tank inspections and repairs. Linings are selected for the stored product — petroleum, chemicals, or potable water — and water tank linings must be certified for drinking water contact. Industry standards guide the work, including API 652 for petroleum tank bottom linings, API 653 for tank inspection and repair, and AWWA D102 for coating steel water storage tanks. Exterior work commonly uses scaffolding, rigging, or suspended platforms, and interior work uses scaffolding inside the tank. Through Scaffold Exchange, you can find tank coating and lining contractors across the U.S. and compare their capabilities and availability.

What Tank Coating & Lining Services Include

Service offerings vary by contractor, but most tank coating firms provide the following capabilities.

Exterior

Exterior Tank Coatings

Coating systems for tank shells, roofs, stairs, and appurtenances that resist weather, UV, and atmospheric corrosion.

Interior

Interior Linings

Linings for tank floors, shells, and roofs selected for the stored product, from fuels and crude to chemicals and process liquids.

Bottoms

Tank Bottom Linings

Thick-film and reinforced linings that protect tank floors from corrosion caused by settled water and sediment.

Water

Potable Water Tank Linings

Linings certified for drinking water contact on water storage tanks, towers, and standpipes.

Preparation

Blasting, Containment & Testing

Abrasive blasting, containment of removed coatings, climate control, and holiday and thickness testing of new systems.

Common Applications & Tank Types

Tank coatings and linings are applied across energy, water, and industrial facilities throughout the United States.

Crude oil and refined product storage tanks

Fuel terminals and tank farms

Municipal water towers and ground storage tanks

Chemical and process storage tanks

Wastewater and treatment tanks

Fire protection water tanks

Agricultural and food processing tanks

Tanks returning to service after inspection and repair

Tank coating projects often involve several specialty services. Here is how they compare and which situations each suits best.

Industrial Linings

Interior protection for process equipment

  • Vessels, sumps, containment, and chimneys
  • Chemical and abrasion resistance
  • Broader range of equipment than tanks
  • Best for process and containment surfaces
Hydroblasting

High-pressure water jetting

  • Cleans sludge and deposits from tanks
  • Removes old coatings and soluble salts
  • Prepares surfaces for relining
  • Best for cleaning and surface preparation
Tank Coatings & Linings ← You are here

Protection for storage tanks

  • Exterior coatings and interior linings
  • Tank bottom and potable water systems
  • Coordinated with tank inspection and repair
  • Best for petroleum, water, and chemical tanks
Environmental Containment

Containment of hazardous work

  • Captures removed coatings and abrasive
  • Required for lead-coated water towers
  • Protects soil, air, and neighbors
  • Best for regulated or sensitive sites
Specialty Welding

Code-qualified critical welding

  • Repairs tank floors, shells, and roofs
  • Completed before coatings are applied
  • Qualified procedures and testing
  • Best for critical repairs and installations

Find Tank Coating & Lining Contractors Near You

Use the Scaffold Exchange map to search by location, filter by service type, and connect directly with local contractors that coat and line storage tanks.

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OSHA Compliance & Safety Standards

Interior tank lining work takes place inside tanks that are typically permit-required confined spaces under OSHA standard 29 CFR 1910.146, requiring atmospheric testing, ventilation, isolation, attendants, and rescue planning. Tanks that held fuels or chemicals must be cleaned and gas-freed before entry, and lining materials can create flammable vapors. Exterior work on tall tanks and towers requires scaffolds, rigging, and fall protection that meet OSHA requirements, and older coatings may contain lead.

  • Tank cleaned, isolated, and gas-freed before entry
  • Confined space permits, monitoring, and attendants in place
  • Ventilation and ignition control during lining application
  • Rescue plan and equipment ready before entry
  • Fall protection and compliant scaffolds for exterior work
  • Existing coatings tested for lead before removal
OSHA Standard 29 CFR
1910.146

Permit-Required Confined Spaces — U.S. General Industry Regulations

OSHA Interpretations & Rulings →

Frequently Asked Questions

Tank coatings protect the outside of storage tanks from weather and atmospheric corrosion, while linings protect the inside from the stored product, water, and sediment. Together they extend tank life, prevent leaks, and protect product quality.
Water and sediment settle on tank floors, creating a corrosive environment that can cause pitting and leaks that are hard to detect. Bottom linings isolate the steel floor from that environment, and are commonly specified for petroleum storage tanks following industry guidance such as API 652.
Linings for drinking water tanks must be certified for potable water contact, and coating work on steel water storage tanks commonly follows AWWA D102. Tanks are typically disinfected and tested before returning to service.
Use the Scaffold Exchange vendor map to search by your location and filter by service type. You can see which local contractors coat and line storage tanks, compare their capabilities, and contact them directly through the platform.
Interior tank work typically falls under OSHA's permit-required confined space standard, 29 CFR 1910.146, along with respiratory protection and lockout requirements. Exterior work requires compliant scaffolds and fall protection, and lead standards may apply to old coatings. Visit the OSHA website for full interpretations and rulings.
Tanks are often taken out of service for internal inspection and repair, and coatings and linings are applied during the same outage after any weld repairs are complete. Coordinating inspection, repair, and coating minimizes downtime and ensures the new lining goes over sound steel.

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