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If you’re restoring a historic home and need a solid primer for metal surfaces, Brouns & Co.’s Iron Oxide Primer is a great linseed oil–based alternative to synthetic options like Rust-Oleum. It works especially well on steel windows, tin drip edges, and other exposed metalwork where moisture and time have taken their toll.

Unlike many modern primers that rely on synthetic binders or plastic resins, this one is made the traditional way—with purified linseed oil and red iron oxide.  Purified linseed oil is a natural rust inhibitor, so this combination offers excellent rust protection while staying breathable and long-lasting. Perfect if you want a more environmentally sensitive and historically accurate solution for your restoration work.

What You Can Use It On:

• Steel window frames (especially mid-century or industrial-style steel casements)

• Tin or metal drip caps above window casings

• Wrought iron railings or fences

• Historic metal shutters or shutter hardware

• Metal awnings or brackets

• Decorative cast iron features (like porch columns or grates)

If you’re already working with linseed oil paint, using this metal primer helps keep your entire paint system consistent, which means fewer layers separating and better adhesion in the long run.

And if you’re trying to stay away from plastic-heavy modern paint systems, this primer is a solid step in the right direction.

Pro Tip: For best results, apply to a clean, dry surface and topcoat with a linseed oil paint within a few days.

📦 In the US, available here.

📦 In the EU, available here.

To learn more about restoring historic steel windows, see our online course at our Steel Window Master Course.

An additional source for linseed oil paints and primers for metal surfaces is found at Earth + Flax.  They also include instructions and additional, helpful information.