Home Improvement

Painting Shingles: What Works on Wood and Why Asphalt Is Off-Limits

A weathered cedar shingle wall on a 1960s Cape Cod can be transformed by good paint, but a faded asphalt roof cannot. The two materials look superficially similar from the curb and confuse plenty of homeowners who assume any shingle takes paint. Painting shingles is a specific skill with specific rules, and the most important rule is reading what the shingles are actually made of before you buy a single gallon. The wrong product on the wrong substrate fails in months, voids manufacturer warranties, and on roofs, can void your homeowners insurance.

Wood Shingles and Shakes

Cedar shingles, white cedar shakes, and redwood siding all accept paint or stain. The cellulose absorbs and the resin content is low enough that proper prep yields a 7 to 10 year paint life and a 4 to 6 year stain life on vertical walls. Eastern white cedar from Maibec and western red cedar from Cabot Cedar take coatings best.

Three coating categories work on wood shingles:

  • Solid stain: Penetrates and seals while hiding wood grain. Cabot Solid Color Acrylic at $50 per gallon at Lowe’s. Lasts 6 to 8 years.
  • Semi-transparent stain: Lets wood grain show. Cabot Australian Timber Oil at $55 per gallon. Recoats every 3 to 4 years.
  • Acrylic latex paint: Maximum color choice and longest life. Sherwin-Williams Duration ($85 per gallon) or Behr Marquee ($55 per gallon). Lasts 7 to 12 years.

Prep Is 80 Percent of the Job

Skip the prep and the paint peels in two seasons. The four steps below take a full weekend on an average two-story home and determine whether your coating lasts.

  1. Pressure wash at 1,500 PSI with a 25-degree nozzle. A Ryobi RY142300 at $300 from Home Depot or rented from Sunbelt for $80 a day. Hold the nozzle 12 inches from the surface. Higher pressure splinters cedar.
  2. Treat mildew with a 3-to-1 water-to-bleach solution or a commercial product like Wet & Forget at $30 per gallon. Apply, scrub with a deck brush, rinse thoroughly.
  3. Scrape loose paint with a 2-inch carbide scraper (Bahco Ergo at $25). Sand feathered edges with 80-grit on a 5-inch random orbital.
  4. Allow 48 to 72 hours of dry time with a moisture meter reading under 15 percent. Wagner MMC220 moisture meter runs $90 on Amazon.

Priming Bare Cedar

Cedar contains tannins that bleed through latex paint and create dark streaks within months. The fix is an oil-based stain-blocking primer like Zinsser Cover Stain ($35 per gallon) or Kilz Original Oil ($30 per gallon) applied to all bare wood. Water-based primers like Zinsser Bulls Eye 1-2-3 work on previously painted surfaces but underperform on raw cedar.

Knots need a shellac-based spot primer like BIN ($35 per quart) before the topcoat. Without it, knot resin bleeds through and yellows the finish coat.

Top Coat Application

Two coats are non-negotiable on wood shingles. The first coat penetrates and seals, the second builds the protective film. For wood shake walls, brush and roll is the right approach — spraying alone leaves coverage gaps in the deep grain.

  • Use a Purdy XL Glide 3-inch brush ($25) for cut-ins and the bottom edges.
  • Use a 9-inch roller with a 1/2-inch nap microfiber cover ($8) for the field.
  • Maintain a wet edge to avoid lap marks. Work in 3-shingle sections.
  • Allow 4 hours between coats per the can recommendations.

Plan to paint when temperatures stay between 50 and 85 degrees Fahrenheit with humidity under 70 percent. Spring and fall give the best windows in most US climates.

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Why You Cannot Paint Asphalt Shingles

Asphalt roofing shingles from GAF Timberline, CertainTeed Landmark, and Owens Corning Duration are coated with ceramic granules that provide UV protection, color, and fire resistance. Paint covers the granules, reduces solar reflectance below the Energy Star and Cool Roof Rating Council thresholds, and traps moisture under the coating.

Almost every asphalt shingle manufacturer voids their 30-year limited warranty if the shingles are painted. Many homeowners insurance policies exclude damage from improperly modified roofs. The IRS does not allow painted asphalt roofs as a capital improvement.

If your asphalt roof looks faded and you want better color, the only legitimate options are roof cleaning to remove algae stains (Roof Maxx soft wash service at $0.20 to $0.40 per square foot) or replacement. Replacement runs $4 to $8 per square foot for architectural asphalt, $8 to $15 for premium designer shingles like CertainTeed Presidential, and $12 to $25 for metal.

Faux Slate and Cement Composition Shingles

Some composite roofing products from DaVinci Roofscapes and Brava Roof Tile do allow factory-applied color refresh but not field painting. Concrete tile from Eagle Tile and Boral can be painted with a specialty acrylic roof coating like APOC 247 Solar-Flex ($65 per 5-gallon pail). Application requires a clean, dry surface and an airless sprayer at 2,000 PSI.

Color Selection for Cedar Walls

Solid stain colors that hold up well over a decade include Cabot Burnt Hickory, Sherwin-Williams Iron Ore, and Behr Cracked Pepper. Avoid pure white on cedar walls — tannin bleed shows fastest on white and the maintenance cycle shortens by 30 percent. Mid-tones like grey, sage, and warm brown read sophisticated and forgive surface imperfections.

Budget for a 1,500 Square Foot Cedar Wall

A typical two-story home with 1,500 square feet of cedar wall surface needs about 8 gallons of primer and 10 gallons of finish coat. Material cost lands around $900 to $1,400 for premium paint. Add $250 for prep supplies (scrapers, sandpaper, drop cloths, plastic), $80 for pressure washer rental, and $150 for ladders or scaffolding rental.

Professional painting service for the same wall area typically quotes $3 to $5 per square foot, totaling $4,500 to $7,500. The DIY version saves $3,500 over a long weekend if you have the ladder skills.

Quick Decision Guide

For wood shingles or shakes on walls, painting shingles is a solid investment that extends siding life and updates curb appeal. For asphalt roofs, do not paint — clean, repair, or replace. Faux slate and concrete tile have specialty coatings but not regular paint. Match the product to the substrate, prep aggressively, and you will get a decade of weather protection from a single application.

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