The short answer
Immediate First Steps
Your first move is to stop the water source, like a leaky pipe, and wipe away any pooled water on the surface. Gently dab the wet wallpaper with a clean, absorbent towel to soak up moisture. Avoid rubbing, as this can tear delicate paper. This initial blotting helps prevent water from seeping deeper into the wallboard or plaster behind the paper.
Next, move furniture away from the damp wall to protect it and improve air circulation. If the water came from a clean source, like a supply line, you can proceed with drying. If it was dirty water from a sewer or flood, you should consider the wall contaminated and consult a water damage professional for safe cleanup.
Creating Airflow for Drying
Set up several high-velocity fans to blow air directly across the damp wallpaper. Position them at an angle to the wall for cross-ventilation, which is more effective than aiming them straight on. Keep windows open if the outdoor air is dry to help moisture escape. Dry outdoor air can significantly aid the drying process.
Run fans continuously for at least 24 to 48 hours. Check the wall's progress by feeling for cool, damp spots. The wallpaper may feel dry to the touch before the wall behind it does. Persistent dampness inside the wall can lead to mold growth and structural softening, so patience during this stage is crucial for a complete dry.
- Use oscillating fans for broad coverage.
- Point one fan toward the room's exterior door or window to create an air exchange path.
- Avoid placing fans so close that they lift the wallpaper's edges.
- Ensure the room's electrical outlets are safe and dry before plugging in equipment.
- Consider using a box fan in the room's doorway to pull moist air out.
- Monitor the drying area to adjust fan placement as needed.
Using a Dehumidifier Effectively
A dehumidifier is essential to remove moisture from the room's air, which helps pull water out of the wall. Place the unit in the center of the room or near the damp wall, ensuring its intake and exhaust are unobstructed. Set it to a low humidity level, often between 30% and 50%, and empty its collection reservoir frequently as it fills with water.
The dehumidifier works with your fans; the fans circulate air over the wall, and the dehumidifier extracts the humidified air. This combination tackles both surface wetness and hidden moisture within the wall cavity. Without a dehumidifier, fans may just move damp air around, slowing the drying process significantly and risking secondary damage.
When to Call a Professional
If the wallpaper is extensively peeling, the wall is sagging, or you detect a moldy smell, contact local water damage pros. They have industrial-grade drying equipment that can dry walls from the inside out. They can also perform moisture mapping to find the full extent of water migration. If you plan to file an insurance claim, note that policies vary, and your insurer decides what is covered.
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Call Now (208) 537-2633Frequently asked questions
Can I use a hair dryer or heat gun on wet wallpaper?
No, direct heat from a hair dryer or heat gun can cause the wallpaper to blister, shrink, or tear. It also dries only the surface, trapping moisture inside the wall. This creates a perfect environment for mold. Always use indirect airflow from fans and a dehumidifier for safe, thorough drying.
How long does it take for wallpaper to dry completely?
Drying time varies widely. With good airflow and dehumidification, surface drying may take 24 hours. However, the wall behind can take several days to dry fully. The total time depends on the water amount, wall material, room temperature, and humidity. Incomplete drying risks mold and structural damage.
Will my wallpaper re-adhere after it dries?
It might not. Once wet, the adhesive can dissolve, causing permanent peeling or bubbling. Even if it lies flat when dry, the bond is often weakened. You may need to re-paste loose sections or plan for replacement. If the wallboard behind is damaged, new drywall and wallpaper will likely be necessary.