Lightly Sand the Surface
From Stair Banister Refinishing · Step 2 of 5 · Video by This Old House

Showing 2:24–2:35 of the source video. Watch the full video with every moment.
What happens in this clip
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.
Step 2 of 5: Lightly Sand the Surface
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.
Every video in Stair Banister Refinishing
Step 1: Clean the Banister
- 2:29–3:41 Prep Day: Cleaning and Sanding
- 0:32–1:08 Clean, Sand, and Tape the Staircase
- 0:39–1:04 Clean and Degloss
Step 2: Lightly Sand the Surface
- 0:56–1:55 Sand All Exposed Surfaces
- 0:11–0:35 Sanding the Banister
- 2:24–2:35 Lightly Sand the Surface (this video)
Step 3: Apply Bonding Primer (if painting)
- 3:45–4:11 Apply Primer
- 2:13–3:04 Apply Primer Coat
- 3:11–4:18 Apply Oil-Based Primer
Step 4: Apply Gel Stain or Paint
- 2:57–4:43 Apply First Coat of Gel Stain
- 3:03–3:39 Apply Gel Stain (Initial Pass)
- 0:24–2:30 Apply Gel Stain for Wood Grain Effect
Step 5: Apply Protective Topcoat
- 5:52–7:29 Apply Protective Top Coat
- 5:35–7:25 Apply Protective Topcoat and Smooth Finish
- 8:35–9:10 Apply Water-Based Topcoat
Questions about Stair Banister Refinishing
Is this banister refinishing project truly beginner-friendly, and can it really be completed in 4 days?
Yes, this project is designed for beginners as it avoids intensive stripping. The 4-day estimate is realistic, but it includes significant drying time between coats. Patience is key, as rushing can lead to poor adhesion or an uneven finish.
What safety precautions should I take when applying primers, paints, and stains indoors?
Always ensure good ventilation by opening windows or using fans to disperse fumes. Wear appropriate personal protective equipment like gloves and safety glasses. Use drop cloths to protect floors and furniture from spills and drips.
What are the most common mistakes beginners make when refinishing a banister this way, and how can I avoid them?
Common mistakes include insufficient cleaning and sanding, which compromises adhesion, and applying coats too thickly, leading to drips or poor drying. To avoid these, thoroughly clean and lightly scuff the surface, and always apply thin, even coats, allowing adequate drying time between each.
What's the main difference between using gel stain versus latex paint for this project, and how do I choose?
Gel stain allows the wood grain to show through, offering a richer, transparent finish, while latex paint provides an opaque, solid color. If painting, a bonding primer like Custom Building Products Multi-Surface Bonding Primer is crucial for adhesion. Your choice depends on whether you want to conceal or highlight the wood grain.
How critical are the cleaning and light sanding steps for a successful finish?
These preparatory steps are crucial for a lasting finish. The WD-40 Specialist Degreaser ensures all grime and oils are removed, while light sanding with a very fine 320-grit sponge creates a 'key' for the primer or gel stain to adhere properly. Skipping these steps will likely result in peeling or a splotchy finish over time.
Do I really need all the specific tools and materials listed, or are there alternatives?
The listed tools like Wooster angle sash brushes and Gator sanding sponges are recommended for quality and ease of application. While similar items can be substituted, ensure your bonding primer (if painting) and protective topcoat are high-quality for best durability and finish. Don't skimp on prep materials like tack cloths.
Can I skip the protective topcoat to save time, or is it truly necessary?
The protective topcoat, such as Modern Masters MasterClear, is highly recommended and should not be skipped. It provides essential durability, guards against scratches and daily wear, and significantly extends the life of your painted or stained finish, especially in a high-traffic area like a banister.
Stair Banister Refinishing
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.
Read the full guide Browse all guides
Planning this project? Shop Oak Valley Designs.

