| Company | City | State / Province | Country | Phone | Website |
|---|---|---|---|---|---|
| Western Interlock | Rickreall | OR | US | (503) 623-9084 | westerninterlock.com |
| Western Materials, Inc. | Vancouver | WA | US | (509) 575-3000 | |
| Western Materials, Inc. | Yakima | WA | US | (509) 575-3000 | westernmaterials.com |
| Westlake Royal Building Products | Houston | TX | US | (866) 557-8663 | westlakeroyalbuildingproducts.com |
| Westlake Royal Building Products | San Marcos | CA | US | (800) 925-1491 | eldoradostone.com |
| Westlake Royal Building Products | Irvine | CA | US | (770) 645-4500 | |
| Westlake Royal Building Products | Roswell | GA | US | (770) 645-4500 | boralna.com |
| Westlake Royal Building Products | Toledo | OH | US | (770) 645-4500 | culturedstone.com |
| Westlake Royal Building Products | Oceanside | CA | US | (760) 802-6746 | |
| Westlake Royal Building Products | Rancho Cucamonga | CA | US | (866) 557-8663 |