Siding protects your home from the elements but can fail when moisture and pests get in. Inspect common trouble spots - chimneys, roof-wall junctions, gutters, and the bottom edge - using simple tests like the thumb-pressure and panel-thickness comparison. Modern materials include vinyl, fiber-cement, engineered wood, metal, and composites; each has pros and cons. Do an annual and storm-after inspection, keep gutters and vegetation managed, and call a pro for widespread damage.

Why siding matters

Siding is the exterior skin of your home. Its job is simple but vital: shed water, keep out pests, and slow heat loss. Left unchecked, moisture and insects can lead to rot, mold, buckling, and higher repair bills. Early detection makes repairs easier and cheaper.

Common trouble spots to check

Inspect these areas first: around chimneys and vents, where roofs meet walls (roof-to-wall junctions), along the bottom edge of siding near the ground, and at or below gutters. Water often collects at joints, under eaves, and where flashing has failed.

Quick, effective checks you can do yourself

  • Thumb-pressure test: Press your thumb against siding panels. If you leave a dent or a soft spot, the material may have absorbed moisture or begun to rot.
  • Compare thicknesses: Look at panels under eaves and at the house's base. Swollen or blistered panels indicate moisture intrusion.
  • Visual scan: Look for cracking, chipping, rust (on metal trim), peeling paint, gap at seams, and visible mold or mildew. Check inside closets and attics near outside walls for signs of damp or stains.
If damage is localized, targeted repair or replacement of a few panels may be enough. Widespread softness, delamination, or structural rot calls for professional assessment.

Modern siding materials (overview)

  • Vinyl: Still one of the most commonly used claddings because it's low-maintenance, affordable, and available in many colors and styles. Exact market share varies by source .
  • Fiber-cement: Gained popularity for durability and fire resistance. It resists rot and insects better than some materials but is heavier and usually costs more to install.
  • Engineered wood and wood: Offer a traditional look; engineered wood improves moisture resistance over natural wood but still needs periodic maintenance.
  • Metal (steel or aluminum): Durable and low-maintenance; often used on modern or commercial-style homes.
  • Composite and cedar: Composites mimic wood without the same upkeep; natural cedar offers beauty but requires staining or painting to last.
Each material has trade-offs: initial cost, maintenance, durability, and suitability for local climate. When choosing, weigh long-term maintenance and local weather patterns.

Routine maintenance tips

  • Inspect siding at least once a year and after major storms.
  • Keep gutters clean and functioning to prevent overflow at siding joints.
  • Trim plants and vines away from siding to improve airflow and reduce trapped moisture.
  • Re-caulk seams and touch up areas of damaged paint or sealant promptly to keep water out.
  • If you find significant rot, mold, or structural issues, hire a siding or general contractor for a professional evaluation.
Regular visual checks and a few simple tests will extend your siding's life and protect your largest asset: your home.
  1. Verify current U.S. market shares for siding materials (vinyl vs fiber cement and others) and update any specific percentages or market-rank statements.

FAQs about House Siding

How often should I inspect my siding?
Inspect siding at least once a year and after major storms. Check visually for cracks, soft spots, and stains, and perform the thumb-pressure test where panels meet or look swollen.
What does a soft spot in siding mean?
A soft or dented spot usually indicates moisture intrusion, rot, or delamination. Localized soft spots can sometimes be repaired; widespread softness suggests a professional assessment is needed.
Is vinyl siding a good choice?
Vinyl remains a popular, low-maintenance, and cost-effective option available in many styles. It performs well in many climates, but exact market share and suitability depend on local conditions and preferences .
Can I paint vinyl siding?
Painting vinyl is generally not recommended because paint can hide damage and may not adhere well unless you use products designed for vinyl. Consider replacement or consult a professional if appearance is the issue.
When should I call a professional?
Call a contractor if you find extensive rot, signs of structural compromise, widespread mold, or if repairs would be difficult to complete safely yourself.