Uşak white marble is tested under TS EN standards and shipped with a
CE Declaration of Performance. Facade applications reference TS EN 1469
(Natural Stone Products — Slabs for Cladding); flooring references TS
EN 12058 (Slabs for Floors and Stairs); modular tile references TS EN
12057 (Modular Tiles).
For international projects, ASTM C170 (compressive strength), ASTM C880
(flexural strength), ASTM C97 (density and water absorption) and ASTM
C1028 (slip resistance) values are provided together with producer
test reports. For LEED-certified projects, producer location and
material record are added to the submittal for Regional Materials
credit.
For prestige projects Sipahi arranges a physical inspection appointment
at Adapazarı Tekeler for vein class, color match and dimensional
tolerance review. This step is particularly important for facade
applications to guarantee panel-to-panel color consistency.