Is It Normal for Drywall to Smell After Getting Wet?
Last updated October 25, 2026
The short answer
Why Wet Drywall Smells
Drywall consists of a gypsum core sandwiched between paper layers. When water soaks in, the paper becomes damp and starts to break down. This process releases organic compounds that create a musty, sour, or earthy smell. The longer the moisture stays, the stronger the odor can become.
The smell is your clue that moisture is still trapped inside the wall. Even if the surface looks dry, the core can remain wet for days. That trapped moisture can lead to mold growth, which brings its own distinct and stronger odor. Pay attention to any new or worsening smells.
What the Smell Means for Your Home
A wet-drywall smell is not just unpleasant; it often indicates a deeper problem. The moisture may have come from a leak, a flood, or high humidity. If the source is not stopped, the water will keep seeping into the wall cavity, affecting insulation and framing.
The odor can also spread to nearby rooms, making the whole area feel damp. You might notice the smell intensifies on warm days or when the heating runs. That happens because heat and airflow release more of the trapped moisture and odor into the air.
- Check for visible water stains or discoloration
- Feel the wall for damp spots with your hand
- Look for peeling paint or bubbling wallpaper
- Notice if the smell is stronger near the baseboard
- Use your nose to trace where the odor is worst
- Listen for dripping sounds behind the wall
How to Respond to the Smell
Start by finding and stopping the water source. Turn off the water supply if a pipe burst, or fix a leaking roof as soon as possible. Then, open windows and use fans to increase airflow around the wet area. Dehumidifiers can help pull moisture from the air and the wall.
Remove any wet furniture, rugs, or belongings that might be holding moisture. If the drywall is only slightly damp and the source is fixed, you can try drying it out. However, if the paper is sagging, crumbling, or the smell persists after several days, the drywall may need to be cut out and replaced.
When to Call Local Water Damage Pros
If the wet area is large, the water came from a contaminated source, or the smell does not go away, it is time to call local water damage pros. They have moisture meters and drying equipment that can reach deep into wall cavities. They can also assess whether the drywall and insulation are salvageable.
A professional inspection can reveal hidden moisture that you cannot see or smell. They can help dry out the structure and remove any wet insulation that might be trapping water. In many cases, removing and replacing the damaged drywall is the only way to fully eliminate the odor.
- Large areas of wet drywall that feel soft or sagging
- Water from a flood, sewage backup, or unknown source
- Persistent musty smell that returns after cleaning
- Visible mold growth on the wall surface
- If you or family members feel unwell from the smell
Preventing Future Odors
Once the drywall is dry or replaced, take steps to prevent future moisture problems. Regularly inspect areas prone to leaks, such as under sinks, around windows, and near the roof. Fix any plumbing issues promptly, and keep gutters clean to direct water away from the house.
In rooms with high humidity, like bathrooms and kitchens, use exhaust fans or a dehumidifier. If you live in Layton, keep an eye on your water bill for unexpected spikes, which can signal a hidden leak. Catching moisture early is the right way to avoid the smell and the damage that comes with it.
Water damage does not wait
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (801) 383-0232Frequently asked questions
How long does drywall smell after getting wet?
The smell can last for days or even weeks if the moisture is not fully dried. Once the source is stopped and the area dries out, the odor may fade. If it persists, the drywall likely needs to be cut out and replaced.
Can I dry out wet drywall myself?
You can try for small, contained areas. Use fans, dehumidifiers, and open windows to speed up drying. If the drywall is soft, sagging, or the smell remains after a few days, professional help is usually needed to prevent mold.
Will the smell go away after the drywall dries?
Sometimes, if the moisture was light and dried quickly, the odor may fade. But mineral and organic residues from the water can leave a lingering smell. If the drywall has been soaked for long, replacement is often the only sure way to remove the odor.