Floating Roof Tank Fabrication & Construction

For nearly 30 years, T BAILEY, INC. has been fabricating and constructing floating roof tanks for the petroleum industry in the Northwest. Whether you need an external or internal floating roof tank, a single or double deck, aluminum or steel, or any other configuration of floating roof, we have the experience, equipment, and crew necessary to build your tank. 

Our process-driven tank fabrication, commitment to quality control, and clear communication with customers have all established T BAILEY, INC. as an industry-leader whose tanks stand the test of time.

Floating Roof Tank Construction

Our Floating Roof Tank Fabrication & Construction Capabilities

T BAILEY, INC.’s fabrication facilities can scale production to accommodate any size of floating roof tank. Our capabilities include: 

  • Fabricating and field-erecting external (EFR) and internal (IFR) floating roof tanks 
  • Retrofitting standard petroleum tanks and installing a floating roof
  • Floating roof tank repair or replacement
  • Manufacturing and installing floating roofs in new or existing tanks

When it comes to floating roof styles, we can fabricate single or double deck floating roofs and can install IFRs and EFRs made from aluminum, steel, or fiberglass. For more information about our floating roof tank fabrication services, contact T BAILEY, INC. today.

Learn More: Tank Seal Welding Guide

What Is A Floating Roof Tank? 

Floating roof tanks are typically large, field-erected steel petroleum tanks, equipped with a platform (roof) which floats on the surface of the tank’s product. The floating roof rises and falls as petroleum product is withdrawn or added to the tank. 

There are two types of floating roof tanks: 

  1. External floating roof tank (EFR): the floating roof is all that separates the product from the elements. In this case, the floating roof serves as the literal roof for the tank. 
  2. Internal floating roof tank (IFR): in addition to being equipped with a floating platform, IFRs are also covered by a traditional steel roof. 


What are the advantages of installing a floating roof tank? 

The primary advantage of installing an EFR or IFR is vapor control. These tanks excel at reducing the emission of volatile organic compounds (VOCs) and other negative air pollutants. 

Additionally, floating roof tanks provide economic advantages by limiting product loss. And because floating roofs rest directly on the product, they also reduce vapor space, resulting in a lower risk of rim space fire. 

Overall, the purpose of a floating roof tank is to mitigate the impact of petroleum products on the environment, to reduce the risk of product loss, and to improve safety. 


What are the disadvantages of floating roof tanks? 

The primary risk associated with floating roof tanks is that rainwater and snow can accumulate on the roof, causing the roof to sink into the product if its drainage systems aren’t functioning properly. This is only a risk for EFR tanks, as IFR tanks are covered by a traditional steel roof and are thus protected from the elements. 

At T BAILEY, INC., we ensure that our EFRs are built to API Standard 650 (Appendix C) specifications, which stipulate that floating roofs must be designed to withstand up to a 24 hour 10” (255mm) rain event. When joined with effective drainage systems and regular maintenance, our EFR tanks are robust and can withstand all the weather conditions of the rainy Northwest. 


T BAILEY, INC. Is A Certified Floating Roof Fabricator

To ensure that our floating roof tanks are built to last, we maintain top-level certification across all stages of our fabrication and construction process. Applicable floating roof tank certifications include: 

  • API 650 for petroleum tanks 
  • AWS D1.1 certification for welding
  • AISC Certified Fabricator
  • SSPC QP3 certification for painting
  • CWB Certification for the Canadian market

As exemplified by these certifications and our long work history, when you partner with T BAILEY, INC., you are working with some of the top experts in the petroleum tank industry. 


Floating Roof Tank Quality Control & Testing 

From the initial design stage, all the way through to construction and roof installation, our team is committed to quality workmanship and ensuring our tanks can endure the rigors of the job site for decades to come. 

Our Q/C and testing processes include: 

  • Visual inspection and step by step monitoring of all processes to ensure the best possible quality 
  • Positive Material Identification (PMI)
  • Full blast and lining profile measuring 
  • Dry film thickness testing
  • Environmental monitoring and reporting
  • Adhesion Testing
  • Lining continuity (holiday) testing

T BAILEY, INC.’s quality control processes and testing are overseen by in-house AWS Certified Welding Inspectors. 


A Floating Roof Tank Fabricator Near You

Our 30 acres of fabrication and coating facilities are located just up the road from the deep-water port at Anacortes, Washington, and a short 10 miles from the I-5. This prime location enables us to partner with commercial and industrial petroleum organizations around the Northwest. 

To learn more about our external and internal floating roof tank services and what T BAILEY, INC. can do for your company, click here to see one of our industrial stack projects, or contact us today. 



Our roots in industrial construction have given us the experience your project needs.


With a ride range of coating abilities, our industrial painting division can provide the surface preparation and coatings your project needs.

Main Equipment

Our facilities are geared to the fabrication of AWWA and API field-erected welded steel storage tanks, UL and API shop tanks, pressure vessels, AWWA C200 water pipe, wind energy towers, large plate exhaust duct, and large diameter casing. Fabricated materials can be primed and painted before being shipped directly to a client’s job site, or tied in with our construction division. We also have tank repair services.

  • 4-roll hydraulic plate bending rolls, up to 2.75” x 10’-0 wide plate
  • CNC plasma cutting machines, 11’ x 50’ water tables
  • Numerous tandem head welding manipulators
  • Numerous single head welding manipulators
  • Tank/vessel turning roll sets, up to 100-ton capacity
  • Automated blasting system
  •  Blask booth 25’ x 120’
  • Paint Booth 25’ x 120’
  • Iron workers
  • Several overhead bridge cranes, up to 50 tons capacity
  • Welding power sources for most welding processes
    • SAW
    • FCAW
    • SMAW
    • GMAW
    • GTAW
    • EWS
  • Angle iron bending rolls
  • 3 O’clock automatic welders
  • Press brake
  • Multiple forklifts, up to 55 tons capacity
  • RT hydraulic cranes, up to 60-ton capacity
  • Scissor and snorkel personnel lifts
  • Extended boom forklifts
  • Dozer and excavators
  • Long haul trucks and trailers
  • Vertamatic welder
  • 5-axis CNC contour beveling plasma cutting table


Quality Control Certifications

As part of our commitment to quality, we work toward continuous improvement and maintain compliance with industry codes and standards.


What can we do for you?

Through experience, innovation, and planning, T BAILEY, INC. delivers each project on budget, with unmatchable quality, and precise timing. Contact us and see how we can help you complete your project.