The short answer
How Pros Confirm Mold Behind Walls
The pros use specialized tools to check for mold without tearing out your walls. A moisture meter detects dampness inside the drywall, which is a strong indicator that mold could be forming. A borescope is a thin camera that fits through a small hole to visually inspect the cavity.
These tools help determine the extent of the issue. If the moisture reading is high or the camera shows visible mold, the next step is usually removing the affected drywall and addressing the source of water. That is a job for a professional.
You can also hire a mold professional who tests air quality and surface samples. That person can tell you what type of mold is present and whether it poses a health risk.
- Musty or earthy odor near the wall
- Dark stains or discoloration on drywall
- Bubbling, cracking, or peeling paint
- Soft or sagging drywall when pressed
- Persistent allergy symptoms at home
- Recent water leak or flood in that area
Health Symptoms You Should Not Ignore
Mold behind drywall can affect your indoor air quality. Common symptoms include coughing, sneezing, watery eyes, headaches, and difficulty breathing. If you or someone in your home feels unwell and the symptoms improve when you leave the house, mold may be the cause.
See a doctor if symptoms are severe or persistent, especially for children, older adults, or people with asthma. A doctor can help you determine whether the symptoms are allergy-related or something more serious. Do not delay medical advice for breathing problems.
You can reduce your exposure by opening windows for ventilation and avoiding the affected area. But the real fix is finding and removing the mold source.
What to Do If You Suspect Mold
First, stop the water source. If there is an active leak, shut off the water supply to your home and call a plumber to fix the pipe. Drying the area is critical, but do not run fans directly on moldy surfaces, as that can spread spores into the air.
Next, contact the pros for an inspection. They can confirm whether mold is present and help you decide on the right repair path. Acting quickly reduces the chance of mold spreading to other parts of your home.
If you have homeowners insurance, check your policy to see what is covered. Policies vary, and your insurer decides what is covered. Ask a qualified attorney if you have questions about coverage disputes.
Repairing Drywall After Mold Removal
Once the mold is removed and the moisture problem is fixed, the damaged drywall must be replaced. This is not a simple patch job, because hidden moisture can linger in the framing. Professionals dry the wall cavity and treat the area before installing new drywall.
The cost of drywall repair depends on the size of the affected area, the extent of water damage, and the type of drywall used. It often ranges from a few hundred to several thousand dollars. A pro can assess the situation and give you a specific number after seeing the damage.
Proper repair also includes repainting and sealing the surface to prevent future moisture intrusion. Ignoring the problem can lead to recurring mold and structural damage.
- Find and stop the water leak first
- Dry the area with fans and dehumidifiers
- Call local water damage pros for inspection
- Remove all moldy drywall and insulation
- Treat the framing with antimicrobial solution
- Install new drywall and repaint
Need help right now?
Phones are answered 24/7 for Orem and nearby communities.
Call Now (801) 876-1119Frequently asked questions
Can I test for mold behind drywall myself?
You can buy DIY mold test kits, but they are not always reliable. A better approach is to use a moisture meter or hire a mold professional for air and surface testing. The pros can also inspect with a borescope to give you a clearer answer.
How long does mold take to grow behind drywall?
Mold can start growing within 24 to 48 hours after moisture is present. Spores are everywhere, and they only need a damp surface and organic material to thrive. That is why acting quickly after a leak is so important.
Is it safe to stay in my home if I suspect mold?
For most people, short exposure is not dangerous. But if you or someone in your home has asthma, allergies, or a weakened immune system, it is safer to limit time in the affected area. Open windows for ventilation and see a doctor if symptoms appear.