A short walk, five times a year
Siding problems grow quietly. A corner trim piece loosens, the caulk at a window head splits, a sprinkler soaks the same board every morning, and one day the sheathing behind it is soft. Fifteen minutes walking around the house at a few set points in the year catches most of that early. The calendar below uses NOAA's engineering weather data for Waco-Madison Cooper to anchor each visit, and leaves room for an extra check whenever a big storm comes through.
Carry a phone for photos, a flashlight, a small notebook and a putty knife for probing soft spots.
January: after the cold nights
Waco-Madison Cooper has a 99% winter design temperature of 26°F, and NOAA's data counts about 22 freeze-thaw cycles there in an average year.
- Run a hand along caulk joints at windows and doors; note any that have pulled loose.
- Look for hairline cracks in vinyl near spots where it may have been bumped while cold.
- Check that gutters drained, and that no ice or water marks run down the wall under a gutter seam.
- Probe the lowest course and window sills with the putty knife; it should not sink in.
- Inside, check closets and corners on outside walls for damp spots or bubbled paint.
March: setting up for rain
The station's data gives a 100-year rainfall rate of 4.0 inches per hour, and gutters are the first line of defense at a rate like that.
- Clean gutters and flush each downspout with a hose.
- Confirm downspout extensions carry water well clear of the wall.
- Look up at every place a roof edge meets a wall; a kick-out flashing should turn water into the gutter.
- Reset any panels or trim that have worked loose over winter.
- Book a contractor now for repairs that are bigger than a weekend job.
May: during and after a downpour
- Walk the house in a hard rain if you can do it safely. Note where water sheets down the siding.
- Look for splash-back marks on the lowest courses beside patios and walks.
- Check window heads for streaks that suggest the flashing is missing or reversed.
- Aim sprinkler heads so they never hit the walls.
July: the hottest stretch
Waco-Madison Cooper's 1% summer design temperature is 99°F, with a mean coincident wet-bulb temperature of 75°F.
- Stand back from the sunniest walls and look for wavy or bulging vinyl.
- Check grills, smokers and patio heaters are well away from siding.
- Look for chalky, faded or blistered paint on wood and fiber cement.
- Wash dusty walls with a garden hose, a soft brush and a cleaner the maker allows; skip the pressure washer.
August: moisture on shaded walls
NOAA counts about 1,889 hours a year with the wet-bulb temperature above 73°F at Waco-Madison Cooper, and about 3,503 above 67°F.
- Check north walls and areas behind shrubs for mildew or algae streaks.
- Trim plants so there is open air between leaves and the siding.
- Pull mulch and soil back so the bottom course stays clear of them.
October: the sealing window
- Replace split caulk with an exterior sealant rated for movement, following the label's temperature range.
- Touch up paint on trim and wood siding while it can still cure.
- Seal gaps around pipes, wires, vents and meters.
- Clean the gutters once more after leaves come down.
- Drain outdoor faucets and store hoses.
Any month: after strong wind
NOAA lists a 50-year basic wind speed of 90 mph for Waco-Madison Cooper, a 3-second gust at 33 feet.
- Walk each side for missing, cracked or flapping pieces, and loose corner posts or soffit.
- Photograph damage before touching it, with one wide shot and several close-ups.
- Cover any exposed sheathing temporarily.
- Call your insurer before permanent repairs if you plan to file a claim.
Signs that shouldn't wait
Call for a contractor's look soon if you find siding that is soft or spongy, panels pulling away from the wall, peeling paint that returns in one spot, gaps that show the barrier behind, insect trails from joints, or interior stains lining up with an outside seam. When you call, ask, "Which city permits does the job need, and who pulls them?" Ask for proof of liability coverage and workers' compensation.
Keep a siding log
Write down the product name, color and installation year of the siding and trim, and keep a few spare pieces in the garage for matching. After each visit, add the date, what you found and what you fixed. Store receipts, warranty cards and the manufacturer's care sheet in the same place, since a warranty claim usually asks for proof of the product and the install date. Over a few years the log shows which wall needs the most care and turns any claim, repair quote or sale into a simpler conversation.