From Stair Banister Refinishing · Step 2 of 5 · Video by This Old House

Showing 2:24–2:35 of the source video.
Using 150-grit sandpaper, lightly sand the entire surface of the handrails. This step is crucial for smoothing out any remaining rough areas, feathering the edges of existing paint, and creating a slightly abraded surface that the primer can adhere to effectively. Ensure you cover all parts of the railing, including flat sections and intricate details.
Goal: Smooth the metal surface and prepare for primer adhesion
This project provides detailed instructions on how to restore and repaint rusted metal handrails. It covers essential steps such as testing for lead paint, thorough surface preparation including scraping, wire brushing, sanding, and cleaning with mineral spirits. The process culminates in applying an oil-based rust-preventative primer followed by two coats of a durable direct-to-metal paint for a long-lasting finish.
Using 150-grit sandpaper or a sanding sponge, gently sand all surfaces of the banister. The goal is not to remove the existing finish, but to scuff it up. After sanding, wipe down the banister with a tack cloth or a slightly damp cloth to remove all sanding dust. Ensure all dust is removed for a smooth finish.
This project outlines how to paint or gel stain a stair banister without complete removal of the existing finish. It involves cleaning, light sanding, applying a bonding primer (if painting), then applying paint or gel stain, and finally, a protective topcoat. The process aims to refresh the banister's appearance while minimizing labor-intensive stripping.
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