How to Paint a House Exterior: Complete Guide

Is It Time to Repaint?

Your home’s exterior paint typically lasts 5-10 years depending on climate, paint quality, and surface material. Signs it’s time to repaint include fading, chalking, peeling, or cracking. Understanding brush vs roller vs sprayer will help you pick the right tool for the job.

Everything You Need to Paint a House Exterior

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Exterior projects fail at the supply step more often than the technique step. Buy the kit before you book the weekend — getting halfway up a ladder and realizing you forgot the right primer is the worst possible discovery.

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Choosing Exterior Paint

Exterior paint needs to withstand rain, UV rays, temperature swings, and mildew. Always choose 100% acrylic latex paint rated for exterior use. See our best exterior paint picks for top-rated options.

Pro Tip

Spend more on exterior paint. Premium exterior paint ($50-70/gallon) contains more pigment and resins, meaning better coverage, color retention, and durability. It can last 15+ years vs. 5-7 for budget paint.

Preparation Is Everything

Surface prep is even more critical for exterior painting:

Pressure Wash

Clean the entire exterior with a pressure washer at 1500-2500 PSI. This removes dirt, mildew, chalking, and loose paint. Let dry completely (24-48 hours).

Scrape and Sand

Scrape off all loose and peeling paint. Sand rough edges smooth. Fill holes and cracks with exterior-grade caulk or wood filler.

Prime Bare Spots

Apply exterior primer to any bare wood, repaired areas, or stained spots. This ensures proper adhesion and prevents bleed-through.

Mask and Protect

Cover windows, doors, light fixtures, and landscaping. Use painter’s tape on trim if painting walls only.

Paint

Start at the top and work down. Apply two coats, painting in the shade when possible. Avoid painting in direct sunlight, rain, or temperatures below 50°F or above 90°F. Check our guide on the best time to paint outside for ideal weather conditions.

Safety Warning

If your home was built before 1978, test for lead paint before scraping or sanding. Lead paint requires special safety procedures and may need professional abatement.

Cost Estimate

For a typical 2,000 sq ft home:

DIY: $500-1,500 (paint + supplies)
Professional: $3,000-8,000

Ready to Start?

The full exterior kit — sprayer, primer, brush, masking, and protection — is at the top of this guide. Order it together so the project doesn’t stall waiting on a single missing item.

When to Hire a Pro

Consider hiring a professional painter if your home is:

More than one story (ladder safety)
Has significant prep work needed
Has lead paint concerns
You need the job done quickly

Application Order — Top to Bottom, Sun to Shade

The two ordering rules that matter on a full house repaint:

Top to bottom on each elevation — paint the highest sections first (gables, second-story siding, fascia) and work down. Drips fall onto unpainted areas instead of finished ones.
Follow the shade around the house — start each morning on the elevation that’s currently in shade and rotate as the sun moves. North side first thing, west side mid-morning, south side after lunch when it’s been shaded by the eaves, east side last in the afternoon. Direct-sun siding will dry too fast and lap-mark.

The right time to paint outside interacts with this — overcast days remove the shade-chasing constraint entirely and let you paint whichever side is most convenient.

Sprayer + Back-Roll: The Pro Method

The fastest professional approach combines an airless sprayer with a paint roller:

Sprayer lays paint down quickly on flat siding (10-12x faster than rolling alone). Use a 0.017”-0.019” tip for typical exterior latex.
Back-roll immediately while wet. Drag a 1/2” or 3/4” nap roller over the just-sprayed area, working paint into the wood grain and seams. Without back-rolling, sprayed exterior paint sits on top and can peel within 12-24 months.

Brushwork is reserved for trim, soffits, fascia, and detailed millwork — fine work where overspray would be a problem.

If you don’t own a sprayer, budget paint sprayers under $200 covers the rental-or-buy decision. Renting from Home Depot is about $75/day for an airless rig and is usually the right call for a one-time exterior job.

Lap Marks: The #1 Visible Failure

Lap marks happen when you paint over an area that’s already started drying. On exterior surfaces in even mild sun, paint can skin over in 90 seconds. The fix is keeping a wet edge — always work toward an unpainted area, never come back to a section you started 5 minutes ago. On a long elevation, two painters working back-to-back maintain the wet edge across the entire wall; solo, work in short sections (4-6 ft wide) and rotate sides faster than you’d think.

FAQ

How long does paint actually last on a house exterior? Premium acrylic latex (the $50-70/gallon tier) realistically lasts 8-12 years on south- and west-facing elevations and 12-15 years on shaded north sides. Budget paint ($25-35/gallon) lasts 4-7 years. Climate matters — coastal salt air and high-UV areas (Southwest, mountain elevations) cut these numbers by 25-40%.

Two coats or one? Two, always, on any color shift or surface condition change. The exception is a same-color refresh on a recently-painted wall in good condition — one heavy coat may suffice. Manufacturer warranties almost universally require two coats; skip the second coat and you’ve voided the warranty.

Do I really need to prime over old paint? Spot-prime any bare wood, scraped areas, or new caulk. Don’t full-prime over previously-painted surfaces in good condition — modern self-priming exterior paints are formulated for direct-to-paint adhesion.

What temperature is the actual minimum? 50°F for standard formulations, 35°F for low-temp formulations like Sherwin-Williams Resilience or Benjamin Moore Aura Exterior. The label tells you what you have. Below the minimum, the paint film doesn’t fuse properly and fails within a year regardless of how it looked when applied.