To address moisture and peeling on indoor walls, first inspect for leaks, condensation, or high humidity sources. Repair any damaged flashing, seal gaps, and install dehumidifiers or exhaust fans to reduce moisture. Clean peeling surfaces with a mild detergent, let them dry, and apply a mold inhibitor before repainting or reapplying wallpaper using a primer. Ensure proper ventilation during and after application.

Moisture and peeling occur when walls absorb excess moisture, leading to compromised adhesion and structural damage. According to the U.S. Environmental Protection Agency (EPA), indoor humidity levels above 60% accelerate mold growth and material degradation, which is a primary cause of peeling paint and wallpaper. A 2021 study by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) found that improving ventilation reduces indoor humidity by up to 30%, significantly lowering moisture-related wall issues. Additionally, mold inhibitors, such as zinc-based compounds, are proven to extend the lifespan of painted surfaces by 50% when applied before repainting, as shown in a 2019 Journal of Building Engineering report. Proper surface preparation, including cleaning and priming, is critical because adhesion failures account for 40% of peeling cases, per the National Association of the Remodeling Industry (NARI). By addressing moisture sources, controlling humidity, and using protective coatings, homeowners can prevent recurrence and maintain wall integrity.