How You Can Paint Cedar Wood: A Step-by-Step Guide

To paint cedar wood properly, I start by pressure washing at 1600 PSI maximum to avoid damaging the soft wood. Next, I scrape off all peeling paint down to solid wood, then sand and patch any damaged spots with wood filler. Here’s the important part: I prime all bare cedar with oil-based primer to prevent tannin bleed-through—a mistake I’ve made before. Finally, I apply two coats of quality exterior paint, letting each dry completely. These steps provide lasting coverage that won’t peel within a year or two.

Pressure Wash the Cedar Siding

How do you get cedar siding truly clean before painting? Proper pressure washing is essential prep work that makes everything afterward easier.

I use a lower-pressure washer—about 1600 PSI maximum—because cedar’s softer wood can’t handle aggressive force. A flat stream nozzle covers large areas without concentrating damaging pressure on one spot.

My process:

• Mask windows and trim with painter’s tape or plastic sheeting first
• Start at the top, working downward so dirty water doesn’t flow onto cleaned sections
• Avoid soffit vents; water intrusion there causes real problems

This methodical approach removes dirt and grime without harming the cedar. Taking time during this prep work makes the painting stage smoother and the final results noticeably better.

Scrape Off Peeling Paint

Why’s old, flaking paint such a problem? It won’t hold new coatings properly, and moisture sneaks underneath, damaging your cedar. That’s why thorough surface preparation matters—it’s your foundation for a lasting finish.

Tool	Best For	Blade Width
Painter’s Multitool	Detailed edges	2-3 inches
Stiff Scraper	General removal	3-4 inches
Carbide Scraper	Stubborn paint	4-6 inches

Your scraping approach:

Work top to bottom in sections, removing all peeling paint down to solid wood. Use a ladder for safety on higher areas. After scraping, sand ridges smooth—this improves adhesion significantly. For severely damaged spots, apply exterior spackling before sanding. You’re creating that clean canvas where primer and topcoat can bond properly.

Sand and Patch Any Damaged Spots

Once you’ve scraped away the loose paint, it’s time to address what’s underneath—any soft spots, gouges, or rough patches that’ll sabotage your finish if you leave them alone.

Scrape away loose paint, then address soft spots and gouges underneath—they’ll sabotage your finish if ignored.

Patching Cedar Wood

I fill damaged areas with wood filler, smoothing it level with the surrounding surface. If patches feel soft or rotten, I replace those sections entirely to keep the cedar structurally sound.

Sanding for Success

Using a sanding block or pole sander, I feather edges around patched areas, blending them without interruption with the wood. After sanding, I inspect for raised grain and re-sand with finer grit if needed. A tack cloth removes all dust before priming—necessary for paint adhesion. This preparation creates the smooth, level surface your cedar needs for even, professional-looking results.

Prime Bare Wood With Oil-Based Primer

Bare cedar’s got natural tannins—those reddish compounds that’ll bleed right through latex paint and ruin your finish if you skip this step. I’ve learned this the hard way. That’s why I reach for an oil-based primer like Zinsser Cover Stain every time.

Why Oil-Based Works Best

Oil-based primer seals those tannins effectively, preventing tannin bleed on your cedar siding. You’ll need mineral spirits for cleanup afterward, but the protection’s worth it.

Application Tips

Apply primer to all exposed sides—not just front surfaces. Use a cheap angled brush and build thin coats, letting each layer accumulate. This thorough coverage prevents paint failure and extends the life of your finish. A two-coat system sets the foundation for quality results.

Paint Your Siding in Two Coats

With your primer locked in place and those tannins sealed, you’re ready for the paint that’ll actually show.

I recommend applying two coats of high-quality exterior paint to your cedar siding for lasting coverage. Spray your siding first, then use a brush or roller on trim and edges—this keeps everything looking clean and professional. Let the first coat dry completely before applying the second; rushing this step invites peeling later.

Timing matters tremendously. Avoid painting in direct sun or extreme heat, which causes rapid skinning and uneven application. Choose a flatter sheen if your cedar has imperfections—it’ll hide them better than glossy finishes. Two coats with proper drying time between applications protects your exterior primer’s work and gives you durability that’ll protect your investment for years.