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Blog Lux Comfort

Damp Mattress: Solutions for a Dry and Comfortable Sleep

From the Puffy Editorial Team | 7 min read.
Damp Mattress: Solutions for a Dry and Comfortable Sleep

Dealing with a damp mattress can be frustrating and concerning. Understanding the causes and effective remedies is essential for maintaining the quality and longevity of your mattress.

Why Does My Mattress Feel Damp?

Several factors can contribute to a mattress feeling damp:

  • Environmental Humidity: High humidity levels in your bedroom can lead to moisture absorption by the mattress.
  • Lack of Ventilation: Poor air circulation around and beneath the mattress can trap moisture.
  • Spills and Accidents: Liquid spills or accidents can seep into the mattress, causing dampness.

New Mattress Feels Damp

A new mattress might feel damp due to:

  • Manufacturing Residue: Some mattresses retain moisture from the manufacturing process.
  • Packaging and Storage: Plastic packaging can trap humidity, especially if the mattress was stored in a damp environment.

How to Clean a Damp Mattress

Cleaning a damp mattress properly is essential to prevent mold growth and maintain hygiene. Here’s a detailed approach:

  1. Spot Cleaning Spills and Stains:

    • Identify areas with visible stains or spills.
    • Mix a solution of mild detergent and water. Apply it sparingly to the stains and gently blot with a clean cloth.
  2. Dealing with Deep Moisture:

    • For deeper moisture, use a mixture of water and vinegar in equal parts. This helps in disinfecting and neutralizing odors.
    • Lightly spray the solution over the damp areas and gently blot.
  3. Applying Baking Soda:

    • Generously sprinkle baking soda over the entire mattress surface. Baking soda is excellent for absorbing moisture and neutralizing odors.
    • Leave the baking soda on the mattress for several hours, preferably overnight.
  4. Vacuuming the Mattress:

    • After the baking soda has sat for a sufficient time, thoroughly vacuum the mattress to remove the baking soda along with any absorbed moisture and odors.
  5. Final Inspection and Air-Out:

    • Inspect the mattress for any remaining damp spots or odors.
    • Allow the mattress to air out in a well-ventilated room or in sunlight, if possible.

How to Dry a Damp Mattress

Effectively drying a damp mattress is crucial to prevent mold and ensure comfort:

  1. Increase Air Circulation: Place the mattress in an area with good air circulation. Use fans to direct airflow over the mattress surface.

  2. Utilize Sunlight and Fresh Air: If practical, place the mattress outside in direct sunlight. The sun’s UV rays are natural disinfectants and can help speed up the drying process.

  3. Absorbent Towels: Lay absorbent towels over the damp areas. Press down gently to help draw out moisture. Change the towels as they become damp.

  1. Using a Hair Dryer or Heater:

    • For targeted drying, you can use a hair dryer on a cool setting. Keep it moving to avoid overheating any area.
    • Alternatively, a space heater can be used to help dry the mattress. Place it at a safe distance to ensure even, gentle heating.
  2. Regular Checks and Flipping: Periodically check the mattress for dampness. Flip or rotate it to ensure all sides dry evenly.

  3. Dehumidifier:In very humid conditions, using a dehumidifier in the room can aid in removing moisture from the air and the mattress.

While addressing dampness in traditional mattresses, it’s worth considering the advanced materials used in Puffy mattresses. Their design significantly reduces the likelihood of moisture retention, making them an ideal choice for those looking to avoid the challenges of a damp mattress.

Interested in how Puffy stacks up against other brands? Check out our mattress comparisons: Puffy vs Purple, Puffy vs Nectar, Puffy vs Casper, Puffy vs Leesa, Puffy vs Saatva, Puffy vs DreamCloud, and Puffy vs Tuft and Needle.

How to Dry a Damp Mattress Protector

Drying a mattress protector correctly is essential to maintain its protective qualities:

  • Follow Care Instructions: Always check the manufacturer’s care label before cleaning. Most mattress protectors are machine washable and can be tumble dried on a low heat setting.
  • Air Drying: If you prefer not to use a dryer or if the care instructions advise against it, hang the mattress protector in a well-ventilated area away from direct sunlight. This prevents any potential damage from high heat and ensures the protector maintains its waterproof qualities.

How to Remove Damp Smell from Mattress

Eliminating a damp smell from a mattress involves a few key steps:

  • Thorough Cleaning: Clean the mattress with a mixture of vinegar and water to neutralize odors. Spray lightly and blot the mattress without soaking it.
  • Baking Soda Treatment: After cleaning, liberally sprinkle baking soda over the entire surface of the mattress. Baking soda is excellent for absorbing residual moisture and neutralizing odors. Let it sit for a few hours or overnight, then vacuum thoroughly.
  • Air Out: Allow the mattress to air out in a well-ventilated room or, if possible, in sunlight. Fresh air and sunlight can significantly help in reducing damp smells.
  • Repeat if Necessary: For persistent odors, repeat the cleaning and baking soda process. Sometimes, more than one treatment is needed to completely remove the damp smell.

For those looking for a long-term solution to avoid dampness-related issues, Puffy mattresses offer advanced technology with breathable materials, ensuring a dry and hygienic sleep environment.

Check out Puffy mattress reviews from real customers and see how we compare with other brands.

How to Prevent Mildew in a Damp Mattress

Preventing mildew in a damp mattress is crucial for maintaining a healthy sleeping environment. Here are key steps to ensure your mattress stays dry and mildew-free:

  1. Proper Ventilation:

    • Ensure good airflow around and beneath the mattress. Use bed frames that allow air circulation, and avoid placing mattresses directly on the floor.
  2. Control Room Humidity:

    • Use a dehumidifier in humid conditions to maintain an optimal moisture level in the room.
    • Regularly air out the room by opening windows, especially in damp or rainy weather.
  3. Use of Moisture-Absorbing Products:

    • Silica gel packets or moisture absorbers can be placed near the mattress to help keep the area dry.
    • Change or recharge these products as per instructions to maintain their effectiveness.
  4. Regular Inspection:

    • Periodically check your mattress for signs of moisture or mildew. Pay special attention during wet seasons or in naturally humid climates.
  5. Mattress Protectors:

    • Use a waterproof or moisture-resistant mattress protector. These protectors not only shield against spills but also prevent moisture from seeping into the mattress.
  6. Immediate Action on Spills:

    • In case of any spills, clean and dry the mattress immediately. The quicker you address the moisture, the less likely it is for mildew to develop.
  7. Sunlight Exposure:

    • Periodically expose your mattress to sunlight. Sunlight is a natural disinfectant and can help prevent the growth of mildew.
  8. Avoid Damp Bedding:

    • Ensure that bedding, including sheets and blankets, are completely dry before use. Damp bedding can contribute to moisture in the mattress.

By following these steps, you can significantly reduce the risk of mildew growth in your mattress, ensuring it remains a safe, clean, and comfortable place for rest.

Preventing Future Dampness in Mattresses

Tips to keep your mattress dry:

  • Use a Dehumidifier: In humid climates, a dehumidifier can help maintain an optimal moisture level in the bedroom.
  • Regular Ventilation: Ensure good air circulation in the bedroom, including under the bed.
  • Waterproof Mattress Protector: A quality protector can shield your mattress from spills and moisture.

Use our store locator to find the closest furniture or mattress store near you and feel the cloudlike comfort of our Puffy Mattress in person.


Managing a damp mattress requires a proactive approach, from identifying the causes to implementing effective drying and cleaning methods. Regular maintenance and the use of protective accessories are key to keeping your mattress dry and extending its lifespan.

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