Benjamin Moore · Primers & Adhesion
Ultra Spec© Acrylic Metal Primer
Rust-inhibitive base coat for metal surfaces.

Technical Specs
- Product type
- Waterborne rust-inhibitive acrylic metal primer
- Base
- waterborne acrylic with corrosion inhibitors
- Available sheens
- Matte
- Coverage
- 300–400 sq ft/gal
- Dry to touch
- 30 minutes
- Recoat
- 2 hours
- Application temp
- 50–95°F
- Cleanup
- soap and water
What It Is
A waterborne, rust-inhibitive primer for ferrous metal — the professional way to stop corrosion from restarting underneath a fresh finish. Waterborne means fast recoat and easy cleanup without giving up rust protection.
How Our Crews Use It
Bare-metal spots on aluminum siding, steel garage doors worn through at the panel edges, railings and metal accents — anywhere our prep exposes metal, this goes on before color does.
Key Benefits
- Rust-inhibitive formula minimizes flash rusting and protects steel
- Excellent adhesion, including galvanized metal
- Fast dry and full-cure times
- Can be applied to slightly damp surfaces
- Water-thinned — no solvents
Made For
Steel and ironGalvanized metalMetal buildingsFences and railings
Good to know
VOC 48 g/L; interior/exterior; not for immersion or strong chemical exposure; avoid application above 90% humidity.
Surfaces We Use It On
Not Sure Which Product Your Home Needs?
Every estimate includes a written, surface-by-surface coating plan — no guesswork, no upsells, just the right system for each part of your exterior.
