• Greg: 805-341-5570 | Gil: 818-744-4949 | info@NTSAexperts.com

Grout Appearance in Service: Distinguishing Installation from Maintenance Conditions

An analysis of color variation, environmental exposure, and evidentiary standards in grout-related claims By Gil Chotam & Greg Andrews | National Tile and Stone Authority (NTSA) Grout appearance is a frequent source of dispute in tile and stone installations. Variations in color, surface texture, or uniformity are often interpreted as installation defects, particularly when they…

Tile and Stone Surface Damage | Installation Damage Attribution and Trade Sequencing

An analysis of tile and stone surface damage claims, coordination issues, and responsibility in construction defect cases By Gil Chotam & Greg Andrews | National Tile and Stone Authority (NTSA) In construction defect claims involving installations, tile and stone surface damage to adjacent components is frequently attributed to the installer. Scratched tubs, stained fixtures, and…

The Price and Value of Integrity in Expert Witness Work

An analysis of credibility, independence, and long-term reliability in forensic testimony By Gil Chotam & Greg Andrews | National Tile and Stone Authority (NTSA) Integrity in expert witness work is not evaluated in theory. It is assessed through the consistency of analysis, the accuracy of reporting, and the independence of conclusions under scrutiny. In construction…

Pre-Litigation Consultations and Role Transition in Expert Work

An analysis of early involvement, disclosure, and evidentiary exposure By Gil Chotam & Greg Andrews | National Tile and Stone Authority (NTSA) Pre-litigation consultations are a common entry point for expert engagement. Initial contact may occur through informal consultation, site inspection, or general inquiry regarding observed conditions. At that stage, the matter may not yet…

The Expert’s Duty to Truth in Construction Defect Evaluation

An analysis of objectivity, bias, and credibility in forensic testimony By Gil Chotam & Greg Andrews | National Tile and Stone Authority (NTSA) An expert’s primary obligation is not to the retaining party, but to accuracy, transparency, and the integrity of the construction defect evaluation process. In construction defect litigation, reports, inspections, and testimony form…