Mold & Moisture Checklist - Basic Guide for Inspecting Home Moisture and Mold

Sep 13, 2026

Upload by Kyle

Mold spores require moisture, suitable food sources such as wood or carpet, and comfortable indoor conditions to grow. Without timely detection and remediation, mold can contribute to allergic reactions and respiratory infections, making prevention and early inspection critical. Use this checklist to evaluate humidity, look for signs of excess moisture across basements, exteriors, floors, walls, windows, kitchens, bathrooms, and attics, and address leaks, ventilation issues, and drainage problems safely.

LanguageEnglish

CategoryForms

FormatPDF

Pages2

Reading Time1 min

AccessFree to download

Basement / Crawl Space

Exterior / Yard

Floors, Ceilings, Windows, & Walls

Kitchen & Bathroom

Attic

Appliances

Other

MOLD & MOISTURE CHECKLIST Pamela R. Turner, Ph.D., and Lindsey Bailey, M.Ed., Department of Financial Planning, Housing and Consumer Economics Mold spores need only a comfortable environment, food (like wood, paper, carpet, etc.), and moisture to grow. If left undetected or untreated, mold can lead to negative health effects such as allergic reactions, respiratory infections, and more. Use this checklist as a basic guide to inspect your home for signs of excess moisture and mold growth. CAUTION: When investigating possible mold issues, you may disturb contaminated areas and, in doing so, further spread contamination into the rest ofthe home. This poses a serious health risk to those with compromised immune systems, asthma, or allergies; therefore, before conducting a thorough mold investigation, you may want to consult your doctor or hire a professional. If you choose to conduct this search yourself, please use appropriate safety gear as recommended by the EPA ([www.epa.gov/mold](www.epa.gov/mold)). Basement / Crawl Space Inspect ceiling, joists, and stairs for mold growth. | Check the indoor humidity levels with a moisture meter or humidistat. If over 50%, you should consider using a dehumidifier. If you have a dehumidifier, be sure to empty and clean the drip pan regularly. | | --- | | Look for peeling paint, imperfections, and discoloration as this may indicate moisture. If present, locate the source of moisture, eliminate it, and dry the area within 24-48 hours. | | Inspect the floor for foundation cracks. Keep in mind that they may lead to the exterior, so check inside and outside. | | Check that the sump pump is functioning properly and the floor drain is intact. (A sump pump is found in some basements or crawl spaces, and it is used to pump water away from the house.) | | Inspect your crawl space for moisture leaks and ensure that it is properly sealed. At a minimum, there should be a 6-8 mil. plastic, or vapor barrier, covering the soil. | Exterior / Yard Make sure all gutters and downspouts are intact, free of debris, and that they direct water away from the house. The downspouts should extend 6-10 feet from the foundation. | Check for signs of water pooling on the roof or around the foundation. If present, this indicates that water is not properly draining from the roof. | | --- | | Check the slope and grade of the house to ensure that the ground slopes away from the house. The slope should be about 6 inches over 6-10 feet. The slope helps direct the water away from the foundation. | | Inspect the siding and exterior paint for peeling, chipping, or bubbling paint. Also look for visible signs of mold growing on the house. | | Inspect the roof for missing or curling shingles that could lead to indoor leaks. You may need to hire a professional to inspect the roof. | | Check that the flashing around doors, windows, joints, etc., is in good condition. (Flashing is a type of material like aluminum or steel, used around joints on roofs and walls to prevent water seeping in.) | | Make sure the outside dryer vent is not blocked or filled with debris. | | Make sure the lawn/outdoor sprinklers only spray water onto grass and not the house. | | Check to see that any plantings around your foundation are not overwatered. If you have too many plants around the foundation, you may need to remove them. | Floors, Ceilings, Windows, & Walls Inspect ceilings and walls for any discoloration, sagging, bowing, or wet spots. If you have a dropped ceiling, lift up the tiles and inspect the cavity. | Check for condensation, or moisture, on the windows or walls. Condensation may be a sign of high indoor humidity. | | --- | | Look for moisture leaks or peeling drywall around window frames. | | If concerned about mold beneath carpet, lift a corner of the carpet and inspect the underside for visible mold. | | If you have vinyl wallpaper, look behind it for mold. | | If you have mold in your closet, it may be caused by poo

FAQs

What conditions allow mold to grow indoors?

Mold needs a comfortable environment, food sources such as wood, paper, or carpet, and moisture. If moisture remains, mold can develop and spread.

Why is it important to check home humidity levels?

Checking indoor humidity helps identify excess moisture that can support mold growth. If humidity exceeds about 50%, using a dehumidifier may be recommended.

What areas should be inspected for moisture problems?

Inspect basements and crawl spaces for visible mold, exteriors for drainage and siding issues, and indoor areas including floors, ceilings, windows, walls, kitchens, bathrooms, attics, and appliances for leaks, condensation, or musty odors.

Sep 13, 2026

Upload by Kyle