Knowles Industrial takes pride in our commitment to maintaining the highest standards of quality in our products and services. As a result we have earned a wide range of certifications and accolades.

  1. ACI Nozzleman Certifications

  2. Three Professional Engineers on Staff
  3. Lead Paint Abatement Certifications
  4. ABAA Air Barrier Association of America
  5. SIKA Certified Contractors
  6. NACE Certified Staff
  7. Selby/U-Crete Certified Installers
  8. Silikal Resin Systems Certified Installers
  9. Jahn Mortar's Certified Installers
  10. Watson Bowman Certified Installers


From the inception of this project almost three years ago working with Bob Kahn Architect and the owners I was looking forward to the opportunity to recommend Knowles Industrial Services. From a product manufacturers viewpoint, Knowles continues to produce outstanding quality through thorough restoration product knowledge and workmanship. Full restoration projects of this magnitude are not common and your level of detail re-creation is superb. As I quite often say, the man with the trowel in his hand can make the big difference in the success or failure ofthe best restoration products available.

Thank you for your continued contribution to the restoration industry.
— Dan Perakes, Cathedral Stone Products