Exterior Maintenance Schedule: Siding, Deck, Caulk, and Paint

Walk your siding once a year looking for cracks and rot (twice a year in the hot, humid South), wash it annually, and reseal a wood deck every two years, dropping to every year under intense sun or brutal winters. Renew exterior caulk once a year, every six months where winters freeze and thaw hard, and check paint and weatherstripping annually. All of it together is roughly one weekend of work and $150 to $400 in materials depending on how many jobs come due that year, and it stands between you and some of the ugliest repair bills a house can generate: moisture remediation behind failed stucco runs $5,000 to $20,000, and a rotted deck costs $5,000 to $15,000 to replace.

Unlike a furnace or a water heater, nothing out here breaks suddenly. Siding, decks, caulk, and paint all fail slowly and visibly, so a homeowner who actually looks once or twice a year catches nearly everything while it's still a cheap fix. Our task-by-task cost guide shows where these numbers sit in the whole-house budget.

How often should you inspect siding?

Once a year, in spring, walk the full perimeter of the house. Budget 20 to 30 minutes and pay extra attention to the bottom few feet of wall and the areas around windows, where splashback and runoff concentrate moisture. It costs nothing, or $150 to $400 if you'd rather have a pro do a formal exterior inspection. In hot climates (IECC zones 1 and 2, roughly Florida through south Texas), UV and humidity chew through cladding fast enough that every six months is the better rhythm.

What you're looking for depends on the material:

• Vinyl: cracks, warping, and panels that have worked loose. Warped vinyl often points to heat damage or bad installation, and loose panels let wind-driven rain behind the wall.
• Wood: soft spots, especially near grade. Press a screwdriver handle against anything discolored; if it gives, rot has started. Wood rot spreads quickly, and the difference between catching it now and later is a $200 board swap versus a $2,000-plus re-siding job.
• Stucco: hairline cracks are normal and patchable with elastomeric caulk for $10 to $40. Cracks wider than 1/8 inch, bulges, or staining are the serious signals, because they can mean water is already moving behind the cladding. That's a call-a-pro finding, and it's the one with the $5,000 to $20,000 downside.
• Brick and stone: check the mortar joints, not the brick. Crumbling or gapped mortar needs repointing before water gets in and freeze-thaw cycles start popping the faces off. White chalky deposits (efflorescence) mean moisture is already migrating through the wall.

Washing, and the pressure washer caveat

Wash siding once a year to clear dirt, mildew, and algae before they accelerate wear. DIY runs $30 to $75, a pro charges $200 to $500, and plan on twice a year in hot-humid or marine climates where algae never stops growing.

One caution: "power wash" doesn't mean full pressure everywhere. Vinyl and fiber cement tolerate moderate pressure; wood, stucco, and older mortar don't. Drop the pressure or use a garden-hose soap applicator on anything delicate, and never blast upward under lap siding.

How often should you seal a deck?

Every two years for most wood decks. Move to annually in two very different climates for two very different reasons: intense UV in the South breaks the finish down from above, and hard freeze-thaw winters in the far North break it down from within.

You don't have to guess. Pour a little water on the boards: if it beads, the finish is still working; if it soaks in and darkens the wood, it's time. That ten-second test beats any calendar.

The job itself is a clean-then-coat weekend project: $40 to $100 in cleaner and sealant or stain, three to six hours of work, and a stretch of dry weather to let it cure. Hiring it out runs $300 to $800. Late spring and September are the natural windows, warm enough to cure and past the pollen dump.

Skipping is the expensive option here. Unsealed boards drink water, then warp, split, and rot, and a deck replacement costs $5,000 to $15,000 against roughly $100 to $300 to keep it sealed. Composite decking skips the sealing but still wants the annual wash and a yearly wiggle test on the railings.

Exterior caulk: the cheapest water-damage insurance you can buy

Check the caulk around windows, doors, trim, and anywhere two different materials meet, once a year. In cold climates (zones 5 through 8), freeze-thaw cycling cracks caulk fast enough that every six months is warranted, once in spring and once before the first freeze. Our fall checklist slots it in for exactly that reason.

The work is dull and effective: dig out anything cracked or peeling, and re-run the joint with exterior-grade silicone or polyurethane. Figure $10 to $30 in materials and one to two hours, or $150 to $400 for a pro to do the whole house. Failed caulk lets water into the wall assembly, where it rots framing invisibly, and the air leakage alone can add 10 to 20 percent to your energy bills.

Weatherstripping, doors, and windows

Weatherstripping renewal rides along with an annual window and door checkup, and both tests are almost embarrassingly simple.

For doors: close them on a sunny day and look for daylight around the edges. If you can see light, air and water move through that gap year-round. Replace compressed weatherstripping and worn sweeps (worn sweeps alone cause 10 to 15 percent energy loss), lubricate hinges and deadbolts, and tighten hinge screws. Materials run $10 to $30 and the whole circuit takes 30 to 45 minutes.

For windows: check for torn or flattened weatherstripping, fog between double panes (a failed seal), and smooth operation. Clean the tracks, then lubricate tracks and cranks with silicone spray. That's $10 to $40 in supplies and about an hour, and it protects against the 10 to 25 percent of heating and cooling energy that failed weatherstripping wastes. A window that won't open is also a blocked fire exit, which is the non-negotiable reason to test every one.

Paint: inspect yearly, touch up early, repaint on schedule

Once a year (twice in high-UV southern climates), spend 30 minutes scanning every painted surface for peeling, blistering, or chalking, the powdery residue that comes off on your hand. Touch-ups cost $20 to $100 in DIY materials or $200 to $600 for a painter, and they matter because paint is the only thing standing between weather and bare wood.

Full repaints run on longer cycles: every 5 to 7 years for wood siding in harsh climates, 7 to 10 years in mild ones, and 10 to 15 years for fiber cement. A professional whole-house repaint typically costs $3,000 to $8,000, which is exactly why annual touch-ups that stretch the cycle are worth the hour.

One safety note: if your home predates 1978, peeling exterior paint may be exposing lead paint. Don't dry-sand it. Use lead-safe practices or hire a certified contractor, especially with kids around.

While you're out there

Two quick add-ons pay for themselves. Fill driveway cracks annually ($10 to $40 in filler) before water gets in, freezes, and turns them into a $2,000 to $5,000 resurfacing job; check every six months in freeze-thaw climates. And walk your concrete paths and steps once a year for heaving, because a known, unfixed trip hazard is the kind of thing an insurer brings up after a fall.

Common questions

How often does a deck need to be sealed or stained?

Every two years is the baseline for wood, annually in high-UV southern climates or harsh northern winters. Skip the calendar debate and use the water test: if water soaks in instead of beading, reseal.

Can you pressure wash every type of siding?

No. Vinyl and fiber cement handle moderate pressure fine. Wood, stucco, and aging mortar joints can be gouged or forced full of water, so use low pressure or a soap-and-rinse approach on those.

How long does exterior caulk last?

Inspect it annually and redo any cracked or peeling sections on the spot. In hard freeze-thaw climates it degrades roughly twice as fast, which is why a six-month check makes sense in zones 5 and up.

When does a house need full repainting instead of touch-ups?

When peeling and chalking are widespread rather than local: typically 5 to 7 years for wood in harsh climates, 7 to 10 in mild ones, and 10 to 15 for fiber cement. Consistent touch-ups push you toward the long end of each range.

Every schedule above shifts with your climate zone and your materials, which is the annoying part of exterior maintenance. SeasonKeep builds that calendar for you from your zip code and your home's actual siding, deck, and systems, then emails reminders when each task comes due. The free plan covers it, and if you want the broader case for staying ahead of this stuff, here's the math.