Quality Control Services

CTaSC provides Quality Control and Quality Assurance Services for Ceramic Tile, Porcelain Tile, Glass Tile, Glass Block, Brick, all types of Stone, other Tile Products, Installation Products, and for other construction applications and materials.

CTaSC prepares Architectural Specifications and Installation Guidelines for new projects and for repair work or renovations. CTaSC will help their clients vet products with quality assurance testing to help ensure their suitability for the intended use. CTaSC produces quality control plans and performs on-site quality control services.

We have local Quality Control Inspectors Nationwide and Globally

Ceramic Tile and Stone Consultants (CTaSC) provides services for:

  • Ceramic Tile Quality Control
  • Porcelain Tile Quality Control
  • Natural Stone Quality Control
  • Granite Quality Control
  • Marble Quality Control
  • Limestone Quality Control
  • Travertine Quality Control
  • Sandstone Quality Control
  • Slate Quality Control
  • Engineer Stone Quality Control
  • Terrazzo Quality Control
  • Glass Tile Quality Control
  • Glass Block Quality Control
  • Brick Quality Control Services
  • Manufactured Stone Quality Control
  • Cement Tile Quality Control
  • Tile Quality Control
  • Slab Quality Control
  • and other Construction Quality Control

Natural stone quality control job

About CTaSC Quality Control Services

CTaSC Quality Control and Quality Assurance Services include qualifying the suitability of products for their intended applications and use, providing detailed installation guidelines and architectural installation specifications to meet industry standards, building codes, and product manufacturers installation requirements. CTaSC will provide a detailed Quality Control Plan, on-site quality control inspectors and inspections, and on-site installer training.


Exterior veneer sandstone installation

CTaSC creates Quality Control Plans and provides the associated forms and processes for documenting and verifying that the ceramic tile and stone tile or slab installations are being installed correctly. CTaSC uses seasoned ceramic tile and stone installers as the on-site quality control inspectors. CTaSC also provides on-site and off-site training of installers to certify they understand and are qualified to install the ceramic tile and stone tile and slab products.

Review Product and InstallationSpecifications

CTaSC will review existing specifications to evaluate and advise suitability of the product and the methods of installation relative to the specified applications and intended use and the level of required performance.


Natural stone quality control job

CTaSC can create new installation specifications for ceramic tile, glass tile, glass block, brick, terrazzo, and all types of stone (granite, limestone, travertine, slate, sandstone, marble, etc.) installation applications that includes tile exterior veneers, tile steam rooms, tile showers and bathtubs, tile swimming pools and tile water fountains, tile floors, tile spas, tile domes, tile exterior decks and balconies, and etc.The installation specifications will follow CSI MasterFormat and will include quality assurance and quality control sections.

Donato Pompo is a certified Construction Document Technologist (CDT) through the Construction Specifications Institute (CSI) and can provide specifications in the CSI Masterformat. CTaSC has architects, engineers, general contractors, and other construction experts on staff.

CTaSC can provide installation guidelines and architectural specifications for all types of tile and stone applications including, exterior veneer tile installation specifications, mall tile installation specifications, floor tile installation specifications, floor tile sound control installations specifications, swimming pool tile installation specifications, water fountain tile installation specifications, crack isolation tile installation specifications, steam room tile installation specifications, shower tile installation specifications, bathtub tile installation specifications, bathroom tile installation specifications, tile mural installation specifications, dome tile installation specifications, exterior deck tile installation specifications, and any other type of tile or stone installation specifications. CTaSC also provides other construction application specifications.


Exterior deck quality control job


Mall floor mural

CTaSC can provide installation guidelines for specific applications that will include a quality control plan to be implemented during the ceramic tile installation, stone installation or other types of installations to make sure they are installed correctly.

Installation specifications will meet industry standards of Tile Council of North America (TCNA), ANSI A108, ISO, Marble Institute of America (MIA), ICC, and other building codes and standards where applicable.

CTaSC Provides Product and Installation


Exterior veneer debonding issue


CTaSC can provide product and installation method recommendations for new or replacement project applications, and provide installation specifications and installation guidelines to ensure the tile will be installed correctly.

CTaSC can produce CSI Master Format ceramic tile installation specifications, CSI Master Format stone installation specifications, and other construction application specifications.

Tile Installer Thin-set Standards (ITS) Verification – Qualifying Tile Installers

All CTaSC inspectors are ITS Verified, as we require of all tile setters and helpers who install tile and stone on the projects we manage.


Thin-setting tile

The Tile Installer Thin-set Standards (ITS) Verification course instructs installers, setters and helpers, on industry standards, practices, and proper installation methods for tile thin-set applications that apply to ceramic tile, porcelain tile, stone tile, glass tile and other types of adhered tile materials. This course is also meaningful to architects, general contractors, consultants, inspectors, and owners who want to be aware of industry installation standards, practices, and methods. Over many years, standards have been created by industry consensus committees sharing their experiences to help avoid problems and ensure successful tile and stone installations. Most installers learn on the job and, unfortunately, do not have the opportunity to learn the industry standards. If the installers do not know the standards, then how can they avoid potential problems? This course is designed to effectively and practically teach tile setters and helpersthe current industry standards.Click here for details.


As required, CTaSC can provide evaluation reports or specifications in writing either as an informal summary or as a formal guideline or as a specification in a CSI Masterspec format.

Quality Control Inspections


CTaSC provides quality control inspections during the installation of ceramic tile, natural

stone, glass tile, brick, terrazzo, and other construction products and applications. During the quality control process CTaSC will create a quality control plan and provide inspection forms and schedules to verify and document that the tiles are being installed according to specifications and that they are performing as intended. In addition, during the quality control inspection process CTaSC will verify that the installers are properly trained for the tile installation process, providing training and recommendations to the installers as necessary.

CTaSC quality control inspectors are seasoned tile installers with years of experience as installers and are managed personally by Donato Pompo and CTaSC senior inspectors. The CTaSC quality control inspectors are typically licensed tile installers or journeyman tile installers. CTaSC provides quality control inspections during the installation of tile for high risk applications. CTaSC has architect inspectors, engineer inspectors, general contractor inspectors, and other construction specialist inspectors.

  • malls
  • exterior veneers
  • showers
  • steam rooms
  • swimming pools
  • exterior decks and balconies
  • other types of construction applications
  • ceramic tile
  • brick
  • terrazzo
  • limestone
  • granite
  • travertine installations
  • slate installations
  • glass tile installations
  • sandstone installations
  • marble installations

CTaSC documents the whole installation process and provides a detailed report at the end of project.

CTaSC performs ceramic tile and stone inspections for the Tile Council of North America (TCA), the Marble Institute of America (MIA), the National Contractors Association (NTCA), and other industry organizations. CTaSC provides objective ceramic tile and stone quality control inspections based on Tile Council of America Handbook (TCA), ANSI and ASTM standards, MIA Dimension Stone Design Manual standards, and Building Codes. CTaSC performs inspections and investigations in Canada based on TTMAC Tile Terrazzo Marble Association of Canada standards for Canada.

CTaSC is a National Tile Contractors Association (NTCA) Recognized Consultant. NTCA is the largest tile installer association in the ceramic tile and stone industry, and they are extensively involved in developing industry standards through the ANSI A108 committee, the Tile Council of North America TCA Handbook for Ceramic Tile Installation committee, and their own NTCA Technical Committee. NTCA recognizes CTaSC as a professional consultant for the ceramic tile and stone industries and recommends CTaSC for those needing inspections, investigations, expert witness services, and other consulting services.

CTaSC is also referred for inspections, investigations, expert witness services, and other consulting services by Tile Council of North America (TCNA), Marble Institute of America (MIA), Ceramic Tile Distributors Association (CTDA), National Tile Contractor’s Association (NTCA), and other industry organizations.

CTaSC has extensive experience providing specifications and quality control inspections for high risk applications.

CTaSC Inspectors

CTaSC provides tile inspectors, ceramic tile inspectors, stone inspectors, glass tile inspectors, brick inspectors, terrazzo inspectors, granite inspectors, marble inspectors, travertine inspectors, sandstone inspectors, slate inspectors, limestone inspectors, architect inspectors, engineer inspectors, general contractor inspectors, exterior veneer inspectors, waterproofing inspectors, and other types of construction defect inspectors.

Stone Quarry Quality Control Inspections


Marble quarry, Carrara, Italy

CTaSC can provide stone quarry quality control inspections globally to verify that the stone ordered for your project is being produced as specified and that the material is correct before it is shipped. When shipments arrive with incorrectly fabricated stone and are not acceptable, the cost to your project can sky-rocket.It is not practical to return containers of stone; and it will typically take 90 days or more to import new material. No matter whose fault it is, everyone pays in one way or another, in terms of added cost, delay of project, and relationships.


Tile Installation Methods and Standards

CTaSC performs objective inspections of ceramic tile and stone tile applications based on TCNA – Tile Council of North America Handbook for Ceramic, Glass, and Stone Tile Installations recommended installation methods and referenced standards, based on ANSI A108 American National Standard Specifications for the Installation of Ceramic Tile and Stone Tile, based on the MIA – Marble Institute of America Dimension Stone Design Manual for stone slab and stone tile applications, and based on any other relevant standards. CTaSC also performs inspection in Canada based on TTMAC Tile Terrazzo Marble Association of Canada standards.

The MIA – Marble Institute of America Dimension Stone Design Manual references TCNA – Tile Council of North America Handbook for Ceramic Tile Installations to be used for stone tile applications. The TCNA – Tile Council of North America Handbook for Ceramic, Glass, and Stone Tile Installations references its installation methods to natural stone tiles, including agglomerates, and glass tile applications.


CTaSC can provide testing to help determine and substantiate suitability of products and installation methods before, during, and after installation. Click here for additional information of Testing Services.


Moisture meter

About CTaSC

CTaSC is a company of expert consultants comprised of accomplished ceramic tile and stone installers, construction scientists and other industry specialists conveniently located throughout the US and Canada. CTaSC assists clients in solving and avoiding installation problems through consultation, quality control, and training services. Founder, Donato Pompo leads the CTaSC Team with an expertise derived from over 35 years of experience to include tile installation, tile distribution, manufacturing and other industry experiences. CTaSC’s qualified team of seasoned consultants around the country combined with Donato’s science and business education (MBA), leadership and extensive track record in the tile and stone industries make CTaSC the leading investigation and expert witness service in the North America.

Click here for an Adobe pdf copy, “Product Installation Quality Control Specifications”

Committed to:
Integrity – Reliability – Honesty – Timeliness – Quality