How to Stain a Banister or Handrail in 5 Easy Steps

Prep Your Space

Before beginning any paint project, it's important to protect your stairs and the surrounding walls with a plastic or cloth covering. Extend the drop cloth slightly above and below your banister to protect the floor from stain splatters. Then, secure the edges with painter's tape. 

Decide whether you plan to repaint the handrail, balusters—aka spindles—or both. You might also consider mixing and matching the colors of your handrail and spindles to make your banister stand out.

Lastly, staining your banister to last requires a few potent chemical strippers, stains, and sealants, so ventilation is key. Ensure your workspace has ample airflow, and if you have kids or pets, consider keeping them distracted in another room for the duration of this project.

Remove the Old Finish

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Fight the urge to jump right into the staining process. Your new stain will not grip onto your surface properly unless you remove the old finish first. Some quick prep work can help ensure you aren’t dealing with uneven, peeling, or chipping paint a few months down the road. 

Remove the old finish using a chemical stripper or by direct sanding. Whichever you choose, grab your safety gloves, goggles, and a mask for this step.

Chemical Stripping

This method removes the varnish layer—and a bit of the stain— to expose the wood for painting. Some bottles will instruct you to dilute the solution with water, but properly applying the chemical will vary based on the solution you chose. In general, you’ll start by applying a thick layer of solution using one of your paintbrushes. Take extra care not to drop liquid onto other parts of the stairs. Let the solution sit on your banister for 15 to 30 minutes, depending on your bottle’s specific instructions. 

Next, grab a scrubbing pad, a plastic scraper, or soft-grade steel wool to remove the loosened varnish. Use a clean cloth for those hard-to-reach places around the balusters.

Wash off the remaining chemical solution with water—again, this may vary depending on your instructions—and then take a break while you wait for the wood to dry.

Direct Sanding

Direct sanding is a bit easier if you stripped the railing with the chemical solution first. But if you prefer to skip the chemicals, you can start by sanding off the old varnish and staining using sandpaper.

Run medium-grit sandpaper over handrails and spindles, making sure to get into all the small corners and crevices using the corner of the paper. If you have a large banister or thick varnish, a power sander might be a handy tool.

Finish with fine-grit sandpaper to get any remaining bumps, splinters, or patches of old stain until the wood is smooth. Use a clean damp cloth to catch any lingering dust or bits of sandpaper.

Apply a Sanding Sealer (Optional)

Your stain will adhere to your wood surface more evenly if you apply one or two thin layers of sanding sealer first. Also known as wood conditioner, this acts as a primer and costs under $20.

Add a thin layer of the sealer to the wood, wiping off any excess with a clean cloth as you go. Depending on the instructions, you can add a second layer, but avoid letting extra sealer pool in banister carvings. Once applied, take another break while this layer dries.

Apply the Stain

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At long last, it's time to add the stain. Choosing a new stain color is a great way to modernize your banisters. Don't be afraid to go lighter or darker than before. A rich brown or java stain would pair nicely with crisp white walls. Darker colors can cover up existing imperfections and help hide dings and scratches that accumulate over the years. Whatever tone you choose, follow these tips for how to stain a banister:

• Add the stain with an angled paintbrush, moving with the grain and layering over your last brush stroke to cover every open spot 

• Make sure your first coat is thin and even 

• Avoid letting the stain pool in nooks and crannies, as well as at the bottom of the banister

• Darken the stain by applying a second coat and lightly sand in between layers for lasting results

Oil vs. Water-Based Stain

You'll have your pick between oil or water-based stains, but your final choice will ultimately come down to your preferences. Water-based stains are generally easier to clean up and are way less potent. You could also opt for a gel stain that applies more evenly with fewer drips.

However, a raised grain effect is common with water-based stains. This is when fibers in the wood stick to the water-based layer, dulling away the original color and natural grain appearance.

An oil-based stain provides a more even appearance, but some DIYers prefer to skip it due to its potency and occasionally high levels of chemicals that can irritate your eyes and skin.

Seal It Up

Once the stain has fully dried, apply a polyurethane sealant. Use a new clean paintbrush to add one or two layers, allowing the coats to dry in between. 

Each layer of sealer and stain should take a couple of hours to dry. But with a little bit of patience and precision, you can have your banister looking like something out of a grand ballroom without having to break the bank.