
Choosing the Right Mortar for Natural Stone: ANSI A118.15 Specs
This technical guide analyzes the critical role of high-performance adhesives in preventing delamination for vertical stone veneers. We examine the performance gap between traditional Type S mortar and polymer-modified thin-sets, focusing on the ANSI A118.15 shear bond standard (450+ psi). The report details how Top Source Stone integrates factory-applied high-strength epoxy resins and thixotropic modifiers to secure 55kg/m² natural stone loads, ensuring structural stability and freeze-thaw durability for demanding 2026 commercial facades and fireplace surrounds.







