| Business | Phone |
| Insulation Specialists 12415 E Trent Ave, Spokane 99216 | (509) 927-0326 |
| Professional Insulation Po Box 9805, Spokane 99209 | (509) 325-5073 |
| S C Phelps Construction Spokane 99217 | (509) 924-0102 |
| Tanz Mechanical Insulation 29 E 27th Ave, Spokane 99203 | (509) 323-9179 |
| All Thermal Insulation 2626 E Trent Ave, Spokane 99202 | (509) 953-5105 |