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San Antonio-New Braunfels · Bexar County

San Antonio static control floors, built to ANSI/ESD S20.20

Airframe and avionics work in San Antonio inherits its static control obligations from a customer rather than from a building code, which changes what has to be retained. Measured here: aerospace MRO, automotive electronics, data centers.

2.5 x 10^4 to 1.0 x 10^6ohmsANSI/ESD STM7.1 / ASTM D257 (as cited on manufacturer TDS)
under 1.0 x 10^9ohmsANSI/ESD STM97.1
400psi (concrete failure)ASTM D4541

San Antonio, and what gets built here

Aerospace capacity in Bexar County is what puts static control on the specification here. Each operation names where it was verified.

01 · aerospace MRO

Port San Antonio hosts Boeing's largest aircraft-modernization complex in the world (5,000

Port San Antonio hosts Boeing's largest aircraft-modernization complex in the world (5,000+ employees) and StandardAero's engine MRO operation (1,000+ employees, 600,000+ sq ft); Port San Antonio broke ground on a Phase II expansion in 2025 adding 200,000 sq ft of aerospace manufacturing space.

Source, verified 2026-09-05

02 · automotive electronics

Toyota Motor Manufacturing Texas announced a $3

Toyota Motor Manufacturing Texas announced a $3.6 billion, 2,000-job second assembly line for its San Antonio plant in July 2026, doubling its manufacturing footprint.

Source, verified 2026-09-05

03 · data centers

Castroville, on San Antonio's west side, is a fast-growing data center cluster: Microsoft'

Castroville, on San Antonio's west side, is a fast-growing data center cluster: Microsoft's SAT82 project ($400-482 million) and CyrusOne's SAT14A ($500 million) anchor a cluster with over $2.19 billion in confirmed investment as of April 2026.

Source, verified 2026-09-05

The customer is the auditor

An aerospace program in San Antonio treats the floor's qualification and reverification records as controlled documents, which changes what has to be handed over more than it changes the floor.

Getting there. Crew travels from the Spring shop (approx. 3 hours via I-10).

The document behind a San Antonio job

ANSI/ESD STM97.1-2025 is the one worth reading first for work like this. System resistance measurement of a person, their footwear and the floor as one circuit. This is the test behind the S20.20 ceiling.

01

A 2025 edition, replacing 2015

The current edition is 2025 and it supersedes the 2015 one. If your program document cites the 2015 edition it is not wrong, it is simply on an older revision, and it is worth checking what changed before your next audit.

Questions from San Antonio

Our ESD requirement came from a customer contract, not a code. Does that change anything?

It changes who you are satisfying, not what the floor has to do. The measurements are still STM7.1 for the floor[2] and STM97.1 for the person, footwear and floor together[3]. What tends to be stricter is the documentation and retention.

Do you handle the whole job in San Antonio or just the coating?

The whole job: removing what is down, preparing the slab, the grounding network, the system itself and the cure schedule around your operation. Prep and grounding are where most of the work is. How it runs.

Is San Antonio inside your normal service area?

Yes. Bexar County is covered on the regular Texas schedule, so a job here does not carry a travel premium the way a one off out of state trip would.

Also in San Antonio-New Braunfels

Crews working San Antonio cover Castroville, Austin, Baytown, Conroe on the same run, so a job in Bexar County rarely stands on its own.

San Antonio, Texasstatic control flooring
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