Saturday, July 20, 2024

How To Check For Mold Behind Drywall

How Much Does A Los Angeles Mold Removal Company Charge To Remove Mold From Inside Walls Gene West Hollywood

How Can Consumers Detect Mold Inside Their Walls

This truly depends on the extent of the mold growth and what caused the mold in the first place, how wet are the walls, is it a large wall area, small wall area.

All these play an important factor in cost.

The range we have charged here at the Twin Home Experts over our 37 years performing mold cleaning is a high of $12,300.00 for some extreme cases and a low of $950.00 for very light and small cases.

Ask A Question Or Search Inspectapedia

Try the search box just below, or if you prefer, post a question or comment in the box below and we will respond promptly.

Search the InspectApedia website

Note: appearance of your Comment below may be delayed:if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Apologies for the delay.

Decision Time: Save Or Scrap

There are times when removing moldy drywall is safer, more effective, and less time consuming than cleaning it. If your drywall surface is soft to the touch, the moisture and the mold have taken their toll on its structural integrity. In this case, its better to remove the drywall, kill the mold on the framing underneath, allow it to dry, and start fresh.

Read Also: What To Use To Get Rid Of Mold Smell

How To Detect Mold In Walls

Figuring out if you have mold inside your wall and even what wall might have a mold problem is no easy task. Unfortunately, there are not a lot of accurate DIY options. The closest you can get to finding mold behind your walls is checking for moisture. More in depth exploration is better left to a professional mold inspector.

What Should I Do If I Suspect Mold In My House

How to Find Hidden Mold Contamination: How to Find and ...

Youll need to address the cause of the mold such as water damage, excessive condensation, poor ventilation, and so on. The best way to make sure you get rid of mold in your house is to hire a professional mold inspector. They will conduct a thorough examination of your home, and assess the molds that are present.

Read Also: How To Get Mold Off Shower Grout

Products And Tools Youll Need To Test For Mold In Your Home

The only thing you need to test for mold at home is a test kit. In addition to the ones previously mentioned, there are several options available:

  • Pro-Lab Mold Test Kit: This kit includes three tests. Your sample can be tested for an additional $40 fee, with results delivered by e-mail or via the companys app.
  • MoldCheck Multi-Test Kit: This kit includes supplies to perform ten tests, which is great for an entire home or monitoring an ongoing infestation. However, there is no lab testing option, so you will need to find your own if you need identification.
  • ImmunoLytics Mold Screening Test Kit: Perform eight tests with this kit. Each plate can be tested for $33 each.
  • My Mold Detective: If you are looking for a more advanced mold monitoring option, the My Mold Detective is a reusable air sampling pump that collects samples in just five minutes. The device comes with four sampling cassettes that can be tested in a lab for $35 each.
  • My Mold Detective Additional Samples: The My Mold Detective can be used again and again, so order as many samples as you need to keep tabs on your mold problem.

Can I Just Open The Wall & Use Bleach To Clean It

You have to be very careful when treating mold inside the wall.

A few things to know first:

Depending on the age of the property, there could be asbestos & lead, so be cautious of opening materials, this can cause a procedure 5 clean up.

Build a contained area with plastic so you dont spread the mold spores causing secondary damage.

Heres a great way to capture particulates/ dust from spreading using simple shaving cream:

And finally, please do not use bleach. There is so much on the internet about using bleach, but we promise it doesnt work.

Weve been on hundreds of calls where theyve used bleach, and it comes right back in a matter of days.

Your better off using a mold removal agent like RMR or contact the Twins today, you can purchase ours.

Also Check: How Many Parts Bleach To Water To Kill Mold

Invasive Visual Mold Inspections

The most conclusive way to find out if there is mold growing in a wall is to cut into the wall for a visual inspection. This can be a small opening just to get a flashlight and mirror inside, all the way up to entire sections of the wall. Proper containment and personal protective equipment should be used when doing this type of inspection to avoid possible dispersal of airborne mold and worker exposure. Also, inspectors should be aware of any possible asbestos or lead paint risks before cutting into walls, and to have suspect materials tested beforehand. With the walls opened up, and discolored area can be sampled. This type of testing will require repairs that most mold inspectors are not equipped to do, so it is a good idea to have a contractor ready to patch the walls back up afterward.

Each mold issue is unique, so an experienced inspector will need to use one or more of these methods to assess potential mold issues in enclosed spaces. If you have concerns with potential mold in a wall, or any other mold concern, contact us to discuss what our team can do to help.

Additionally here are some videos explaining how we can test inside wall cavities.

Treatment For Removing Black Mold From Wood

Mold in Walls, Part 1

To remove black mold on wood you can lightly spray the impacted wood with a mold stain remover, wait a few minutes, wipe it off with a scrub sponge, and repeat as needed. The dark black mold stains will lighten up little by little. You may not be able to get the wood looking like new but the look will be greatly improved.

Once youve got the wood looking pretty good, make sure the area dries out. You can put up new insulation & drywall once youre sure the underlying water issue that caused the black mold growth in the first place has been fixed.

You May Like: How Do You Know If Mold Is In Your House

Turn Off Your Hvac System

Mold patches hiding inside your walls can shed mold spores, which can travel throughout your home via the heating, ventilation, and air conditioning ducts. It is a good idea to turn the system off until your restoration technicians arrive to prevent the continued spread of spores. Consider using standing fans or space heaters to maintain a comfortable temperature inside your home in the meantime.

Does Vinegar Kill Black Mold

White vinegar is a mildly acidic product that cleans, deodorizes, and disinfects. It can also kill 82% of mold species, including black mold, on porous and non-porous surfaces. Spray the vinegar onto the moldy surface and leave for an hour. Finally, wipe the area clean with water and allow the surface to dry.

Recommended Reading: How To Get Rid Of Yard Mold

Im A Los Angeles Renter And I Keep Telling My Landlord That I Think There Is Mold Inside My Walls What Should I Do Becca Los Angeles

Hire a Los Angeles mold inspector, especially if you know there was a leak and the property owner didnt dry it down properly. You can certify mail the landlord for your records, and deduct it off next month rent.

Most often, most Los Angeles mold inspectors will not open walls without owner of property consent.

What Causes Mold Growth

Mold on drywall due to trapped moisture in wall behind ...

When you first spot mold growing in your home, or start suspecting that it’s growing, you might think something like, “How did that get there?” or “What did I do to cause mold growth in my house?”

There are plenty of ways that mold can find its way into your house. For example, spores can enter through open windows, doorways, or your ventilation system. They can also attach themselves to shoes, clothing, or pets and find their way in through these different vehicles.

It’s important to note, though, that mold will only grow and spread in areas that are favorable. This includes areas that are very moist and provide the mold spores with a steady supply of nutrients.

If you have a leaky pipe or flooding in your home, for example, that will create a prime area for mold growth. Places with excessive window condensations might be prone to mold, too. The same goes for spots that don’t get a lot of air circulation.

Also Check: How To Get Rid Of Mold In Car Air Conditioner

Why Black Mold Loves To Grow On Drywall And How To Remove It

Drywall is a wonderful building material. Its light, cheap, and easy. Throw up some drywall and youve got an instant wall in minutes. Black mold loves growing on drywall because it is basically a giant food source. Made up of gypsum encased in two layers of soft paper, black mold feeds on the paper as a food source.

Also, drywall soaks up water like a sponge, stays wet for long periods of time, and is difficult to properly dry out. When drywall gets wet, mold usually grows on both sides of the drywall the side you can see, and the backside thats behind the wall that you cant see. Simply cleaning the mold off of the side you can see is not enough. Youve got to get to both sides of the drywall.

Outside of a surface mold from humidity scenario, the best strategy for removing black mold from drywall is simply to cut out the impacted drywall and replace it with new. Dont waste your time trying to clean it. Its best to cut it out, bag it up, and throw it away.

For Help Removing Mold In Walls

If you need help removing mold in your walls, or if you’d just like some advice about the mold removal process, we suggest scheduling a free consultation in your home with a mold removal professional. There’s no obligation on your part, so even if you opt to handle the mold removal job yourself, you can benefit from some free professional guidance. To find qualified mold removal professionals offering free consultations in your area, you can follow the link.

Also Check: How To Kill Mold In Washing Machine

You Feel Like You Have A Lingering Cold Or Are Battling Flu

“It is pretty tough to detect until it starts coming through the walls because mold, as you know, is a problem with some sort of leak somewhere,” Hayes-Raitt said. “So the problem starts behind the walls. But if you’re getting sick, it might be because of a mold problem.”

If you’re dealing with symptoms that you can’t exactly pinpoint, it could be that you’re stressed, haven’t been taking care of yourself, or wound up with some sort of virus, of course, but it could also potentially be that you’re dealing with mold.

If possible, Hayes-Raitt said that one of the best ways to determine if the sickness you feel is related to the house or not is to leave for a few days and then return home. If you feel those same symptoms coming on again, it might be the result of something more than a cold or virus.

Larger Drywall Test Cuts To Check For Hidden Mold Contamination

How to search for hidden mold in your home

Where we have justification to proceed we may cut a 2″ x 3″ hole in drywall to peer into a wall cavity.

This opening, like the plug cut openings discussed above, is trivial to patch in drywall or plaster, but permits a more reliable inspection of the building cavity interior than a borescope.

Where damage is already extensive, there is nothing lost, no material to preserve, and a still larger opening may be cut, or multiple openings, in order to confirm the extent of contamination and thus the extent of demolition and mold cleanup needed.

Memnoniella echinata – a toxic black mold in a wall cavity: During an investigation of a high-rise apartment in a large U.S. city, I was asked to evaluateblack mold visible on basement floor joists in a kitchen.

Our mold inspection procedure includes a screen of the entire living unit which in this case was a large multi-room apartment.

At the far end of the apartment, remote from the kitchen and its leaks and mold, I found evidence of other leaks into and below an expensive cherry-wood floor.

We traced leaks to an air conditioning wall unit whose condensate was draining into the floor ratherthan into its drain.

The photo above shows our initial test cut into the wall cavity.

The next photo below shows a closeup of the cavity interior.

We chose an area to make a “test cut” into the wall cavity where we thought there had been the most water exposure.

Another “toxic black mold”, Memnoniella echinata is particularly toxic and irritating.

You May Like: What Will Black Mold Do To You

Common Causes Of Mold

Mold flourishes in damp conditions, so most causes of mold growth involve unwanted water getting into the house. Some of the most common situations include:

  • Leaky pipes or air-conditioning ducts
  • Wet clothes
  • Excess condensation on cold metallic, glass, or concrete surfaces.


Water can also pool up around sinks, bathtubs, dishwashers, or washing machines, so be wary and clean any water up right away. Some problems to look out for outdoors include a yard that slopes toward the foundation of the house, leaky shingles on the roof, and improper caulking on windows.

Is Mold Behind Walls Harmful

4.2/5MolddangerousMoldmoldis moldbehindwalls

When there is black mold inside of the walls, it often causes allergy-like symptoms, including watery eyes, sneezing and running nose. If anyone in your home has respiratory problems, such as asthma and those with a weakened immune system may have a higher risk of infections from exposure to the mold.

Also, can mold be inside the walls? The most common causes of mold growing on walls are high humidity, condensation and water leaks . Condensation forms when water vapor in the air meets cold surfaces and cools to become liquid. Condensation is especially common on walls which form the perimeter of a house.

Keeping this in view, is mold behind drywall dangerous?

Toxic black mold can release spores as it feeds on common household materials such as drywall, carpet, insulation, or sub-flooring that have been exposed to moisture. These spores, if ingested or inhaled, can cause a range of unpleasant and even dangerous symptoms in humans.

Is mildew on walls dangerous?

If it develops indoors, however, it can also pose health risks. When inhaled, mildew spores cause coughing, headache, sore throat, and respiratory problems Mold can result in considerable structural damage when left unattended for a long time.

Recommended Reading: How To Handle Mold In Your House

Keep The Humidity Low

A humid environment can encourage mold regrowth in the future. Do your best to keep the space dry and mold-free by minimizing the humidity levels. Use a dehumidifier to keep the humidity between 30 and 50 percent to deter mold from growing in other areas.

Following these steps will help you remove mold from your drywall surfaces and discourage it from growing back.

How To Remove Mold Behind Walls

Mold in Walls .........Finding Mold Inside Walls, Removal ...

A lot of people falsely believe that killing mold inside walls is an easy process. Its not. This is NOT a DIY activity. One wrong move and you run the risk of contaminating your entire home and all of your belongings. It is better to spend the money and allow a professional to properly remediate the area than trying to do it yourself and causing a larger, more expensive problem.

When it come to mold, you want to do it right. That means opening up walls, removing the moldy building materials and replacing it with new building materials. Specifically, porous materials such as sheetrock and insulation should be replaced. Even though the sheetrock and insulation may appear to be OK, it is likely that mold spores are still present and the mold may continue to grow even if you follow a treatment of black mold inside walls. It also means treating the areas around it with products like EC3 and Endurance Bio Barrier to tackle any rogue mold spores and mycotoxins and prevent mold in the future.

Mold in walls is one of the more complicated mold scenarios but certainly one that can be handled. Please reach out if you think you have mold hiding inside your walls. I offer phone consultations on the best steps to take for your individual situation.

Recommended Reading: How To Stop Mold In Mobile Home

What Is The Best Way To Prevent Mold Inside Walls Jeremy Studio City

Preventing mold in walls is maintaining your plumbing, condensation line for HVAC, home well ventilated, windows & doors waterproofed.

In a kitchen, keeping your underneath dry.

There are mold prevention paints on the market that have antimicrobial defense inside, that have a long term lasting effect.

In a bathroom, having a good exhaust fan like this Panasonic whisper is ideal.

How Do You Remove Mold Inside Walls

Before attempting to remove mold in walls remember that these procedures are to be performed inside a contained area while wearing personal protective equipment and operating negative air filtration equipment.

If mold is growing on the back of drywall, the drywall must be removed and replaced. Any insulation in the wall should be removed and replaced. Moldy materials should be double bagged in heavy plastic trash bags before you carry them through the house for disposal, to prevent the inadvertent spread of mold throughout the home in the process.

After sheetrock walls and/or ceilings are removed, the exposed studs and joists and the surfaces between the studs and joists need to be HEPA vacuumed to remove all of the settled dust deposits from these surfaces, as these deposits are likely to contain elevated levels of mold and bacteria. The same holds true for floor joists when wood floors are removed during a mold remediation project.

Don’t Miss: How To Keep Mold Out Of Your Basement

Popular Articles
Related news