Shamrock Materials ready-mix concrete plant in Napa, CA
Napa RMC Plant 5136 · serving Napa, CA 94558-6205 (Napa County)
NRMCA-certified
Shamrock Materials (Napa RMC Plant 5136) is an NRMCA-certified ready-mix concrete plant serving Napa, CAand nearby ZIP areas. Describe your pour below (concrete strength, approximate size, pour date, and notes like slump or site access) and we'll show you the certified plants serving your ZIP to call directly.
Certification
NRMCA cert #35877
Listed as certified when last checked 2026-07-03 · expires 2028-06-27
Contact
(800) 675-1511
Location is ZIP-area approximate; confirm exact address with the plant.
Available strengths (PSI), slump, and admixtures aren't verified here. Confirm your spec with the plant when you call. Estimates only.
See NRMCA-certified ready-mix plants near Napa, CA to call directly
Send one request and we'll show you certified plants serving your job ZIP area to call directly. Estimates only.
Source: NRMCA Currently Certified Plants directory. Ready Mix Concrete is an independent directory of NRMCA-certified ready-mix concrete plants and is not affiliated with Shamrock Materials.