How to get a rustic effect with Porter’s Liquid Iron and Instant Rust

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How to use Porter’s Liquid Iron and Instant Rust to give any surface or object a classic aged look

If you’re aiming to get that rustic, weathered look on any interior, exterior, or object (think those beautifully aged-looking outdoor planters), then Porter’s Liquid Iron and Instant Rust are the products for you — and they’re incredibly easy to use. Here are step-by-step instructions for achieving the precise finish you’re after.

*An important note: Treating Liquid Iron with Instant Rust results in a chemical reaction, so results may vary from surface to surface and object to object.


First, apply one coat of Porter’s Limeproof Undercoat Sealer on the surface or object you’re painting. This can be done with a brush or a roller.

Liquid Iron

Ensure your Porter’s Liquid Iron is thoroughly mixed so the iron particles are evenly distributed.

Once the Limeproof Sealer is fully dry, use a brush or Two Fussy Blokes 15mm NAP Microfibre Paint Roller to apply one coat of Liquid Iron (available in both black-base and white-base).

When you’re happy with your first coat, apply a second layer of Liquid Iron. Allow it to set until touch-dry or slightly tacky (but not wet!).

Instant Rust

Using a brush, apply one coat of Instant Rust. Allow to dry for three hours, and apply a second coat.

Rust will begin to develop shortly, and the reaction will continue over the next 12 hours.

Have more questions or need more help choosing a product? Email us at [email protected].