Contact

National Tile Authority serves as a national reference directory for the tile contracting and installation sector, covering licensed professionals, regulatory standards, and commercial tile services across the United States. This page outlines the available methods for reaching the National Tile Authority office, the geographic scope of the directory's coverage, and what information to include when submitting an inquiry to ensure a timely and accurate response.

Additional contact options

Inquiries directed to National Tile Authority fall into distinct categories, each routed through appropriate channels depending on subject matter. The primary categories include listing inquiries, verification requests, regulatory reference questions, and general research or media inquiries.

Email remains the most reliable channel for non-urgent correspondence. Structured messages sent with clear subject lines and complete contextual details receive prioritized handling. The primary contact address for National Tile Authority is eli.rosales@authoritynetworkamerica.com.

Directory listing inquiries — including requests to add, update, or dispute a contractor or company listing — should reference the specific listing in question, including state, trade category, and license number where applicable. These inquiries follow a separate review workflow from general correspondence.

Regulatory and standards reference requests are handled on a reference basis only. National Tile Authority does not provide legal interpretation, compliance certification, or professional licensing decisions. Those functions remain with named public bodies including the Tile Council of North America (TCNA), the National Tile Contractors Association (NTCA), and state-level contractor licensing boards operating under each state's Department of Consumer Affairs or equivalent agency.

Research and media requests should identify the requesting organization and the nature of the inquiry in the subject line to receive appropriate routing.

How to reach this office

National Tile Authority operates as a national-scope digital reference directory with no regional field offices. All correspondence is handled through centralized digital channels.

The following contact methods are available:

1. Primary email — eli.rosales@authoritynetworkamerica.com — for all formal inquiries including listing management, verification, and editorial matters.
2. Directory listing submission — conducted through the Tile Listings section of the site, which includes structured submission fields aligned to trade category and geographic region.
3. General reference inquiries — questions about how the directory is structured, its scope, or how professional classifications are applied can be directed to the same primary email address with the subject line "Reference Inquiry."

Response timelines vary by inquiry type. Listing-related requests involving contractor license verification require cross-reference with state licensing databases — a process that may extend the standard response window. Inquiries submitted with complete information, including full contractor name, state of operation, and license number, are resolved faster than incomplete submissions.

For context on how the directory is organized and what categories of tile professionals and services are indexed, the Tile Directory Purpose and Scope page provides a structural overview of classification methodology.

Service area covered

National Tile Authority indexes tile contractors, installers, suppliers, and related trade professionals operating across all 50 U.S. states. The directory does not currently index professionals operating exclusively outside the United States, nor does it extend to U.S. territories where state-equivalent contractor licensing frameworks are absent.

Within the national scope, coverage concentrates on tile professionals holding active state contractor licenses. Licensing requirements for tile installation and contracting vary by state. Florida, California, and Texas each maintain independent licensing structures administered by their respective state contractor licensing boards — the Florida Department of Business and Professional Regulation (DBPR), the California Contractors State License Board (CSLB), and the Texas Department of Licensing and Regulation (TDLR). A tile contractor licensed in one state is not automatically recognized in another, and directory listings reflect state-specific license status where that data is publicly available.

Commercial tile projects subject to permitting under the International Building Code (IBC) or local amendments — particularly projects governed by the TCNA's Handbook for Ceramic, Glass, and Stone Tile Installation — may appear in listings under separate commercial classification tags. Residential installation professionals are indexed under distinct categories, with classification boundaries described in the Tile Directory Purpose and Scope section.

Trade specializations indexed within the national directory include:

• Ceramic and porcelain tile installation
• Natural stone installation (marble, granite, slate, travertine)
• Glass tile and mosaic installation
• Large-format tile installation (slabs exceeding 15 inches on any side, per ANSI A108.19 handling standards)
• Heated floor tile systems
• Tile restoration and repair

What to include in your message

Complete submissions reduce processing time and eliminate back-and-forth clarification. Depending on inquiry type, the following structured information should be included.

For listing inquiries:
- Full business or contractor name
- State of primary operation
- License number and issuing agency (e.g., CSLB License #XXXXXX)
- Trade specialization category
- Nature of the request: new listing, update, or dispute

For verification requests:
- The specific listing or contractor name being verified
- State of operation
- The purpose of verification (commercial bid review, subcontractor vetting, project compliance)

For regulatory reference questions:
- The applicable standard or code in question (e.g., ANSI A108 series, TCNA method designation, IBC chapter reference)
- The project context: commercial, residential, or industrial
- Whether the question relates to installation method, safety classification, or permitting

For research and media inquiries:
- Name and affiliation of the requesting party
- Specific data, classification, or directory scope being researched
- Publication or usage context

Submissions that omit license numbers or state identifiers for contractor-specific requests are flagged for follow-up before processing can begin, adding at minimum one full review cycle to the response timeline.