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

Start with a yearly walk around the house. Look from the ground for changed siding, open joints, peeling paint, loose deck parts, masonry cracks, staining, and places where water collects. SeasonKeep adds a second condition check for some hot, humid, marine, and very cold climates, but the calendar is only a prompt to look. The installed materials, their manufacturers, local conditions, and what you actually find determine the work.

The National Park Service exterior-maintenance guide uses annual checks for exterior walls, porches, and windows, with frequency adjusted for climate and exposure. It also recommends recording changed conditions instead of treating every mark as the same defect.

A useful exterior inspection does not begin with a repair

Walk the accessible perimeter in one direction and photograph anything that has changed. Check low walls, corners, openings, penetrations, roof-to-wall transitions, and areas beside paving or soil. From indoors, look for water staining near the same locations.

The material changes what matters:

• Lap, panel, or shingle siding: note loose, cracked, warped, stained, open, or soft-looking areas. Do not pull panels or probe concealed layers just to complete an inspection.
• Wood: look for open joints, checking, coating failure, water staining, and areas that appear soft or changed. A finish problem and decay are not the same diagnosis.
• Stucco: document new or growing cracks, bulges, loose areas, and staining. Crack width alone does not identify the cause or the right patch. NPS stucco guidance puts the moisture source and compatibility of the repair ahead of a generic filler.
• Brick and stone: look at both the units and the mortar. Record cracks, displacement, open joints, spalling, and recurring white deposits. Efflorescence shows that moisture moved through the wall; it does not tell you why. NPS masonry guidance warns that hard mortar and impermeable coatings can make deterioration worse.

Use a qualified exterior contractor or mason when damage is elevated, widespread, loose, moving, recurring, or difficult to identify. A photograph with a date is more useful than an unsupported guess about what is behind the cladding.

Clean the material you have, not a generic exterior

"Pressure wash the exterior" sounds like one task, but siding, painted wood, stucco, masonry, decks, glazing, and concrete do not share one safe pressure, chemical, or technique. Excessive pressure can gouge a surface, force water behind a joint, strip a coating, or scatter contaminated paint debris.

First identify the material and finish. Read the product or building-component instructions, choose the gentlest method they allow, and test a small inconspicuous area. Protect people, plants, drainage, vents, glazing, and electrical equipment. Stop when cleaning reveals loose material, open joints, or a failed coating.

NPS recommends selecting the gentlest effective masonry-cleaning method. It also notes that water-repellent coatings can trap moisture and are not a substitute for correcting roofs, gutters, mortar, joints, or drainage.

Inspect the deck before choosing a finish

SeasonKeep keeps the existing two-year wood-deck finish review, with annual reviews in several high-exposure climate zones. That is a review interval, not a promise that every deck needs another coat on that date.

From a stable walking surface, look for:

• movement at guards, stairs, posts, or connections;
• loose, damaged, or decayed boards;
• corrosion or missing hardware;
• finish that no longer repels water; and
• water that remains where the assembly should drain.

Stop using an unstable area and arrange a qualified deck inspection. CPSC's outdoor-repair checklist recommends professional inspection for structural deck safety.

For a structurally sound wood deck, follow the wood-treatment and finish manufacturers' preparation, dry-time, temperature, application, and recoat instructions. The USDA Forest Products Laboratory explains that penetrating finishes wear and need renewal based on exposure and water resistance. It does not support one recoat deadline for every species, product, exposure, or existing finish.

Sealant is a joint system, not just a bead

Check accessible sealant at windows, doors, penetrations, trim, and material transitions for cracking, gaps, loss of adhesion, or nearby staining. Cold-climate reminders occur twice a year so a changed joint is less likely to pass through another freeze season unnoticed.

Before removing anything, identify what the joint connects and where water is meant to drain. Use the window, door, cladding, flashing, and sealant instructions together. Do not cover a weep opening, a flashing outlet, or a recurring leak with another bead.

The Department of Energy distinguishes caulk for stationary joints from weatherstripping for moving components. Sealing a visible opening can improve comfort, but a national percentage cannot predict the savings from one exterior joint. A professional assessment is appropriate when the leak is concealed, widespread, or tied to flashing or wall movement.

Windows and doors need model-specific care

Check windows from indoors and stable ground-level locations. Note cracked glass, fogging between panes, water staining, blocked drainage openings, damaged weatherstripping, and units that do not open, close, or lock normally. Check exterior doors for damaged seals, worn sweeps, water staining, sagging, binding, or failed latching.

Clean, lubricate, and adjust only the parts and products named in the installed manual. A lubricant that is right for one roller or hinge can collect dirt or damage a finish elsewhere. Do not force hardware or seal a drainage path.

For removable storm panels and screens, follow the product instructions for seasonal configuration, removal, drainage, cleaning, and storage. ENERGY STAR notes that storm-window performance depends on the primary window, climate, installation, drainage, and operability. Keep any required emergency-escape opening operable.

Paint inspection includes a lead decision

Look from the ground for peeling, blistering, chalking, staining, exposed substrate, and repeated failure near gutters, openings, joints, or grade. Correct the water source before repainting. The coating manufacturer and substrate condition determine preparation and recoat timing, so a universal five-, seven-, or ten-year repaint schedule is not reliable.

If the home was built before 1978, assume disturbed paint may contain lead unless it has been properly evaluated. Sanding, scraping, drilling, cutting, pressure washing, and component removal can all create contaminated dust or debris. EPA recommends that homeowners hire a Lead-Safe Certified contractor. If you do the work yourself, follow EPA's containment, dust-minimization, cleanup, and waste steps. Contractors doing covered work must comply with the Renovation, Repair and Painting program.

This boundary also applies when deck, window, door, siding, or sealant work will disturb old painted surfaces. "It is only a small exterior repair" is not enough information to skip the lead check.

Include driveways, paths, steps, and fences

Inspect walking and driving surfaces for new cracks, settlement, heaving, loose material, ponding, and changed elevation. Mark or block an immediate trip hazard. Product instructions must match the pavement and condition; filling a moving or wet crack does not correct its cause.

Check fences and gates for leaning sections, moving posts, decay, corrosion, sharp or loose pieces, and hardware that no longer closes or latches normally. Keep people away from an unstable section. Posts near utilities, retaining conditions, and structural connections belong with qualified service.

There is no useful national price for these findings. Access, material, extent, local labor, permits, and whether the cause is still active determine the scope. Get comparable written quotes after the problem is identified.

Common questions

Should I pressure wash all exterior surfaces once a year?

No. Inspect on the scheduled date, then use the gentlest method approved for each exact surface and finish. Some conditions need hand cleaning, low-pressure rinsing, qualified treatment, or repair before cleaning. Painted pre-1978 surfaces require EPA lead-safe controls when the work can disturb paint.

Does a deck need stain every two years?

Not automatically. Two years is SeasonKeep's review point for most wood decks. Condition, finish type, exposure, preparation, and the product instructions determine whether it needs cleaning, another coat, structural service, or no work yet.

Can I caulk every exterior gap I see?

No. Some openings drain or ventilate the assembly. Identify the joint and the connected components first. Recurring failure, staining, or a gap at flashing needs diagnosis before another bead.

How often should a house be repainted?

Inspect the coating each year and follow the coating and substrate guidance. Sun, moisture, preparation, material, color, exposure, and prior coats can change service life enough that one national repaint interval is misleading.

When should I call a professional?

Use qualified help for elevated access, loose or moving assemblies, structural deck or fence concerns, recurring water entry, bulging stucco, masonry movement, damaged glazing, uncertain materials, and covered paint-disturbing work on a pre-1978 home.

SeasonKeep turns the annual baseline and climate-specific review points into reminders tied to your home. The reminder tells you when to look; the material, manual, site, and observed condition tell you what to do next.