Siding Installation & Repair — Protect and Transform Your Home’s Exterior

Storm-damaged siding exposes the house wrap and sheathing underneath to rain, UV degradation, and pest infiltration. Within 24–48 hours, exposed areas can absorb moisture that leads to mold, rot, and structural damage costing thousands more to repair. A siding contractor ($360–$1,500 for most repairs) will assess whether sections can be patched or if the underlying house wrap and sheathing need replacement. File an insurance claim immediately and take photos of all damage before temporary repairs. As a temporary measure, cover exposed areas with tarps or heavy plastic sheeting secured with furring strips and screws — not nails through the siding, which create additional leak points.

Interior water stains adjacent to exterior walls almost always indicate a siding failure — cracked caulking, failed flashing, or gaps around windows and penetrations. Water traveling behind siding can migrate far from the actual leak point, so the stain location may not indicate where the siding has failed. A siding professional uses moisture meters and visual inspection to trace the water path to its source ($0–$100 for assessment, $360–$1,500+ for repair). Ignoring water infiltration causes mold growth within 48 hours, sheathing rot, and eventual structural damage. Before the contractor arrives, check gutters for clogs and ensure downspouts direct water at least 4 feet away from the foundation.

Replacing all siding ($8,500–$20,000 for vinyl; up to $26,600 for fiber cement) is a major investment that requires precise measurement, proper house wrap installation, window and door flashing integration, and coordination with soffit, fascia, and trim work. Professional installation ensures continuous weather barrier protection — a single missed flashing detail can channel water behind new siding for years before damage becomes visible. Insulated siding adds $1.50–$3.00/sq ft but reduces energy costs by up to 20% and adds structural rigidity. This project typically returns 68–81% of cost at resale. Get at least three quotes specifying material brand, thickness, insulation backing, and warranty terms before committing.

Stucco cracks wider than 1/16 inch, bulging areas, or brown staining indicate moisture trapped behind the stucco — a condition that can cause severe structural damage to the underlying framing and sheathing. Traditional stucco ($7–$11/sq ft) and synthetic EIFS stucco ($9–$18/sq ft) both require professional repair to maintain the weather barrier. DIY caulking over stucco cracks traps moisture inside the wall cavity, accelerating rot and mold growth. A stucco contractor will probe suspect areas with a moisture meter, remove damaged sections to inspect the framing and lath, repair any rot, apply new lath and scratch/brown/finish coats, and ensure proper weep screeds at the base allow moisture to escape.

Widespread mold or rot on siding ($100–$2,000 for rot repair depending on extent) indicates a chronic moisture problem that goes deeper than the surface. Rotted siding has lost its structural integrity and weather protection — pressing a screwdriver into the wood will reveal how far the rot extends. Simply replacing the visible rotted boards without addressing the moisture source (failed flashing, clogged gutters, improper grading, or lack of house wrap) guarantees the problem returns. A siding contractor will remove the affected sections, inspect sheathing and framing for hidden rot, replace any compromised structural members, install new weather barrier, and address the drainage issue causing the moisture retention.