How to Fix Exterior Paint Peeling Caused by Moisture

What Is Peeling Exterior Paint?

Loss of adhesion of exterior paint, usually resulting in cracking and exposing the bare surface.

What Causes It?

Peeling happens when a dry painted surface gets wet from moisture exposure causing it to swell. This leads the paint film to loosen, crack, and fall off after time. Among the variety of ways for water to seep under the paint film are:

  • Worn out or no caulking in joints, corners, and openings, allowing moisture to enter. 
  • Ice-filled or clogged gutters, causing moisture build-up under the shingles. 
  • Interior moisture migrating through to the exterior walls.
  • Painted surfaces that are too close to bare ground. 
  • Leaking roofs.
  • Painting a surface that is damp with rain, condensation, or dew.

Solutions for Peeling Exterior Paint

  • Remove loose or cracked caulking and repair with a quality product. 
  • Clean and repair gutters so they properly channel water away from the house.
  • Install vents, louvers, fans, and dehumidifiers to reduce moisture, especially in kitchen, bathroom and laundry areas.
  • If wood siding is touching the ground, remove that portion of the wood. Siding should be installed not less than 6 inches above the ground.
  • Repair the roof as needed.
  • Test the coating in a 6 to 12 inch radius around any peeled areas to ensure the adhesion is adequate.
  • Follow label and data page directions for proper surface preparation and environmental conditions.

Exterior Paint Repair Products

Start by removing any problematic paint. We do not recommend painting over cracked or peeling paint because it can result in an unwanted texture and the cracking may return. 

Next, apply highly durable Multi-Purpose Latex Primer. Then, use SuperPaint® Exterior Acrylic Latex to help protect the surface from moisture and the elements. We recommend this formula because it is resistant to peeling and cracking. Once dry, add the finishing touch by sealing wood trim joints and edges with PowerHouse Siliconized Acrylic Latex Sealant.

Top Featured Products