The short answer
Start with Safety
Before you touch any mildew, put on rubber gloves, safety goggles, and an N95 mask. Mildew spores can irritate your lungs, skin, and eyes, so protect yourself. If you feel unwell during the work, stop and see a doctor.
Open windows and doors to bring in fresh air. Use a fan to blow air out of the room, but avoid pointing it at the mildew, which can spread spores. If the area is large or the mildew covers more than a few square feet, consider calling local water damage pros for help.
Find the Moisture Source
Mildew cannot grow without moisture. Check for leaks from pipes, roofs, windows, or appliances. Look for damp spots on walls, ceilings, or floors. Fix the leak first, or the mildew will return after cleaning.
In Rowlett, spring thunderstorms can bring sudden water intrusion. If you notice mildew after heavy rain, inspect your roof and gutters for damage. For hidden leaks, professional leak detection can locate the problem without tearing into walls.
- Check under sinks and around toilets for slow drips
- Inspect roof shingles and flashing after storms
- Look for water stains on ceilings or walls
- Feel walls and floors for dampness
- Check window seals and door thresholds
- Look for condensation on pipes or air conditioning units
Clean Hard Surfaces
For non-porous surfaces like tile, glass, or metal, mix one part water with one part white vinegar in a spray bottle. Spray the mildew, let it sit for a few minutes, then scrub with a brush or sponge. Rinse with water and dry the surface completely.
For tougher stains, a mild detergent or a solution of baking soda and water can work. Avoid mixing bleach with other cleaners, as the fumes can be dangerous. After cleaning, dry the area thoroughly to prevent regrowth.
Handle Porous Materials
Drywall, wood, ceiling tiles, and carpet that are soaked with water and covered in mildew often cannot be saved. The mildew can penetrate deep into the material, and cleaning the surface may not remove the roots. In many cases, the material must be cut out and replaced.
If you decide to remove drywall, cut out a section larger than the visible mildew, about 12 inches beyond the affected area. Seal the area with plastic sheeting before removal to contain spores. For flooring, water-damaged carpet and padding usually need to be pulled up and disposed of.
Know When to Call the Pros
If the mildew covers a large area, more than about 10 square feet, or if the material is structural, such as load-bearing wood, professional help is wise. Local water damage pros have the equipment and training to handle extensive mildew safely.
They can also address the underlying water damage, such as structural drying or moisture mapping, to ensure the area is truly dry. If you have health concerns like asthma or allergies, do not attempt the cleanup yourself. A mold professional can assess the situation and recommend safe removal methods.
Water damage does not wait
Phones are answered 24/7 for Rowlett and nearby communities.
Call Now (214) 730-5993Frequently asked questions
Can I just paint over mildew?
Painting over mildew does not kill it. The mildew will eventually bleed through the paint and continue to grow. You need to clean the surface thoroughly first, using a mildew-killing solution, and then dry it completely. For porous materials, replacement is often the only reliable option.
Is bleach effective for killing mildew?
Bleach can kill mildew on hard, non-porous surfaces, but it may not penetrate porous materials like wood or drywall. Also, bleach fumes are strong and can be harmful. A vinegar solution or a commercial mildew cleaner is often safer and works well on many surfaces. Always test a small area first.
How do I know if the mildew is dangerous?
Mildew can cause allergic reactions, respiratory issues, and other health problems, but you cannot tell its danger by sight alone. If you have symptoms like coughing, sneezing, or headaches, or if the area is large, it is sensible to consult a doctor and consider professional removal. A mold professional can test the air quality.