How to Make Exterior Wood Doors Last Longer: Painting, Refinishing, & More

April 16, 2025
Title image with Roof Maxx logo, Roof Maxx branded van and title "How to Make Exterior Wood Doors Last Longer: Painting, Refinishing, & More" on a green transparency over an image of a well-kept home's front porch.

Summary

  • Wood exterior doors are beautiful, but they need proper care if you want them to last. Cleaning the surface and seams regularly can help prevent rot and mold.
  • Painting or sealing your door will also help protect it from the elements. Choose an exterior oil-based paint or clear sealant like oil-based spar varnish or marine-grade varnish.
  • You’ll need to refinish your doors every few years, or when you spot cracks, peeling, and other signs of wear & tear. 
  • Adding overhangs and weatherstripping can help protect your door from moisture, as can regular maintenance like tightening hardware and filling cracks or chips.

Wood is a show-stopping material for residential exterior doors. Species like mahogany, walnut, white oak, fir, and cedar are popular for their natural beauty and classic look, but they’re also durable enough to withstand the elements for decades if you care for them properly. 

Regular inspections can help you spot problems early, but there are other effective ways to reduce the impacts of exposure. Below, we’ll share our top tips for preserving your wood exterior doors, like sealing the surface, adding overhangs, and weatherstripping.

We’ll also teach you a bit about proper roof care, which helps protect your home’s exterior by preventing damage from runoff. Treatments like Roof Maxx extend the lifespan of your asphalt shingles so they don’t crack or break prematurely—making it easier for water to flow into your gutters and downspouts, and away from your wooden doors.

A heart shape water droplet forms while a woman cleans a wood door.
A heart shape water droplet forms while a woman cleans a wood door.

Why Cleaning Your Wood Exterior Door Matters

Your exterior doors stand between the inside of your home and the great outdoors. They’re always there to protect you, but they collect a lot of grime in the process.

Over time, mud, dirt, and debris build up on the surface of your door and seep into the seams along the frame. These environmental “treasures” aren’t just unsightly—they create the perfect breeding ground for moisture, wood rot, mold, and algae.

Regular cleaning gives exterior wood surfaces a chance to dry out when the weather is nice. It also helps you catch early signs of damage before they turn into emergencies that require costly repairs.

Tips for Cleaning Exterior Wood Doors

To clean your wood door, follow these best practices:

  • Avoid Harsh Chemicals: Stay away from bleach, ammonia, and disinfectants (e.g., Lysol). These might seem like an intuitive choice, but they contain solvents that may damage the wood.
  • Use Mild Soap and Water: Warm water and a little bit of dish soap is really all you need to clean your exterior doors. Dawn works well and is safe for pets/kids.
  • Scrub Gently: Use a microfiber scrub or soft sponge to gently remove any dirt and debris. Rinse thoroughly after you’re done.
  • Dry Thoroughly: After washing, use a soft, dry towel or cloth to wick up any remaining water. This will prevent moisture from soaking into the wood.
  • Routine Dusting: Dust the door with a microfiber cloth once a week. This will help remove any new buildup and prevent it from scratching the surface over time.

For added protection, you can also buff in a small amount of boiled linseed oil (not regular) with a microfiber cloth. This will darken the color of the door slightly, but helps repel moisture and mold.

A professional painter painting a wood exterior door.
A professional painter painting a wood exterior door.

Painting & Sealing for Extra Protection

Painting or sealing your door provides a protective layer against weather damage, UV rays, and moisture intrusion. It also lowers your risk for warping, cracking, and fading if the door is directly exposed to the sun or rain on a regular basis. Follow the steps below for the best results.

How to Paint or Seal an Exterior Wood Door

Start by deciding whether you want to paint or stain. Both will protect your door from the elements, but paint is opaque and hides the grain; stain is clear or tinted and highlights it instead. 

It’s best to tackle this job on a dry day when you aren’t expecting any precipitation. Avoid painting or sealing when it’s cold, raining, or snowing—it may not cure correctly, leading to cracks and bubbles.

Once you’re ready, follow these steps:

  • If You Choose Paint: Go with exterior-grade paint. Oil-based paints are more durable and moisture-resistant, while water-based or latex paints dry faster and clean up easily.
  • If You Choose a Stain/Sealant: Look for oil-based spar varnish or marine-grade varnish. Both will protect against UV rays and moisture without covering up the natural grain.
  • Prep the Surface: Sand the door lightly and remove any old paint or sealant for a smooth, even finish.
  • Apply Even Coats:  thin, even coats and allow each layer to dry thoroughly to prevent streaks or bubbles.
  • Let it Cure: Most paints and sealants are dry to the touch within a few hours, but take a couple of days to a few weeks to fully “cure.” Be cautious and avoid dents or scratches in this timeframe.

If you apply a stain or sealant, you can also buff boiled linseed oil into the surface every few months with a soft microfiber cloth. This will bring the color to life again and lock moisture out.

Sealing an older wood exterior door.
Sealing an older wood exterior door.

Refinishing for a Fresh Look

If you start to notice fading, peeling, or discoloration on your exterior doors, it’s probably time to refinish them. This is the best way to restore the natural beauty of the wood, but it can also help you reset the clock if you find your paint or sealant just isn’t lasting long enough anymore.

Steps for Refinishing

As before, start your refinishing job on a dry day when you aren’t expecting any rain or snow. It may be helpful to remove any hardware, like the knob and locks, before you start.

  • Remove Any Existing Finish: Use a paint stripper or sandpaper to remove old paint or stain, starting with 80-grit sandpaper and working your way up to 100-grit.
  • Sand the Surface Smooth: Spritz the surface with water and keep sanding it with 120- to 220-grit sandpaper. Keep going until the wood is smooth and ready for a fresh finish.
  • Apply Stain or Clear Finish: To maintain that natural wood look, choose a stain or clear finish that’s specifically for exterior wood surfaces.
  • Seal After Staining (If Needed): Some stains contain a sealant, while others don’t. If needed, apply a fresh layer of spar varnish or marine varnish once your stain cures. 

You can reinstall any hardware once the stain is dry to the touch.

Protecting Doors from Weather Damage

If your door isn’t directly exposed to the weather, it won’t develop issues related to wear and tear as quickly. Installing an overhang—a small roof or awning above the door—will shield it from rain and sun.

Storm doors are another great option. They provide an extra layer of protection from wind, rain, and extreme temperatures, so they’re ideal for climates with harsh weather. They also give pets the ability to survey their kingdom while they’re still safe and sound indoors.

An older wooden door on a beautiful home with Spanish architecture.
An older wooden door on a beautiful home with Spanish architecture.

Long-Term Maintenance & Inspection Routine

Make it a practice to check your door for issues like cracks in the wood and peeling paint every so often. Both make it easier for water to seep into the wood, which can eventually lead to rot. For the best possible protection, follow this long-term maintenance and inspection routine:

  • Check your weatherstripping at least every spring and fall—replace it right away if it’s cracked, misaligned, or just doesn’t provide enough protection anymore.
  • Check the door’s finish, hardware, and frame at least twice a year, paying close attention to symptoms like rot, rust, peeling, cracking, or warping. These are all signs of a moisture problem.
  • Repair any small cracks or chips right away. This will prevent them from worsening over time, and may even help you avoid a more costly replacement.
  • Tighten or replace any loose hardware. Humidity, rain, ice, and temperature changes can impact  how your door performs and fits into the frame.

Taking simple steps like these will help keep your door in great shape for years.

A Roof Maxx dealer arrives at a customer's home.
A Roof Maxx dealer arrives at a customer's home.

Using Roof Maxx to Protect Your Home’s Entire Exterior

Most leaks start at the roof and eventually travel downward to the wood surfaces in your home. By protecting your roof, you can also protect everything below it—doors, trim, siding, and more. It’s a smarter, more complete approach to exterior protection.

Roof Maxx is an all-natural, plant-based treatment that helps restore flexibility to your asphalt shingles and prevent granule loss. The treatment itself isn’t intended for weatherproofing, but it helps preserve the structural integrity of your shingles—which lowers your risk for leaks around the flashing, fascia, and walls.

Roof Maxx is a top choice for customers and clients all across the US—but don’t just take our word for it! Check out these real testimonials and reviews from our clients to see what they have to say.

Cost-Effectiveness of Roof Maxx for Exterior Protection

Roof Maxx treatments cost up to 80% less than the cost of a full roof replacement, but they can potentially extend the life of your roof by up to 15 years. It’s a budget-friendly way to protect the exterior of your home without harming the environment or anyone in it.

You want to do everything you can to keep your home in great shape. Get the best possible protection from mold and water intrusion by making roof maintenance a regular part of your exterior upkeep.

A Roof Maxx dealer poses in front of a branded vehicle.
A Roof Maxx dealer poses in front of a branded vehicle.

Protect Your Home From the Top Down

Cleaning, sealing, and refinishing your wood exterior doors makes them more weather-resistant and can help keep them in good condition for decades. Installing weatherstripping and overhangs is also helpful, but for maximum protection, you need to start with the first line of defense—your roof and shingles. 

Roof Maxx helps maintain the integrity of your asphalt shingles so they stand the best chance of protecting areas vulnerable to water intrusion, like your flashing and fascia. Connect with your nearest dealer now to get a free quote.

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Picture of Georgios Karakitsios
Georgios Karakitsios
"George Karakitsios owns the website and marketing technology behind Roof Maxx. He has spent more than 12 years building web experiences for homeowners and Roof Maxx customers"
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