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How to Kill Black Mold without Killing the Environment!

Don’t Be A Turkey! Sure, there are many black mold killing products available on the cheap. And, some of these products will take care of your basic needs in your next mold removal project.

However, several of these cleaning agents are highly toxic to use indoors – so be careful. And, great care should also be taken to ensure that your work area is well ventilated and a respirator and gloves are worn while killing black mold in your home.

How To Kill Black Mold With Ammonia

Killing Black Mold with Ammonia has its advantages. It’s a good disinfectant and does a pretty good job of killing mold on hard, non-porous items. These items would include the bathroom sink, shower doors or kitchen counters.

Ammonia is also cheap and easy to find in your local grocery or hardware stores.

However, ammonia’s active ingredients (like bleach), do a lousy job of penetrating porous materials such as sheetrock, particle board or some of the traditional, drop-down ceiling tiles.

In order to effectively kill mold, you have to get to it at the root level. And, chlorinated bleach and ammonia are not up to the task.

There are many other mold cleaning agents that will kill the fungi effectively and at the root level.

Baking soda and vinegar are excellent non-toxic alternatives to ammonia. And, they are not harsh on the environment or you.

Remember! Ammonia is a skin and eye irritant and its fumes are quite toxic. This mold killing agent is poisonous and could prove lethal when ingested or its fumes are inhaled. Especially, in non-ventilated areas without the use of a respirator.

Ammonia will react strongly with chlorinated bleach. Take care of you and Yours! Label your spray bottles for your mold cleaning solutions and always read the label for active ingredients before combining any solutions.

How To Eliminate Black Mold With Ammonia

Wear a respirator and gloves when working with ammonia based mold cleaning products. Never mix ammonia with chlorinated bleach

Open nearby windows or doors to get a cross flow of air to dissipate any fumes generated by your cleaning (small mold cleanup projects – large jobs will require negative air pressure and sealing off area to prevent mold spores from escaping throughout residence)

  • Combine ammonia and water in 50/50 proportions.
  • Pour solution into a spray bottle and spray contaminated areas evenly.
  • Allow the mold killing solution to sit for 5 or 10 minutes.
  • ​Scour mold tarnished area with a small brush or equivalent and wipe clean.
  • Repeat if necessary.

Often enough, many mold killing products will have ammonia already in them. Be extra cautious to follow the directions on the label to the letter and ensure that the cleanser is never mixed with bleach (in part or whole)!

Otherwise, ammonia is similar to using bleach in that it should only be used on non-porous areas – Always wear gloves when working with any chemical and wash hands immediately, thereafter!

How To Kill Black Mold With Bleach

Killing Black Mold with Bleach on hard, non-porous surfaces will kill nearly any type of mold spore(s) that it comes in contact with.

Eliminating Black Mold with Bleach is also very inexpensive and readily available. Many, if not most food markets, grocery outlets and hardware stores will carry a number of mold killing cleaners.

However, bleach has a heck-of-a time reaching the root level of mold growth in porous type items such as tile grout (unsealed), wood and cement block. To name a few.

The mold killing agent in the bleach (chlorine) simply does not reach the root and instead, leaves the moisture content of the bleach behind in its wake. This same moisture is what promotes additional mold growth to the area just cleaned.

Have you ever wondered why mold stains keep coming back to the same area of your outside patio or wooden deck after killing the mold growth with bleach? Hmmm..,

Never mix bleach with ammonia – This is extremely dangerous and will likely produce Toxic Chloramine Fumes or Vapors.

Never mix bleach with vinegar – Combining these two mold cleaners together will not give you a better cleaning agent to work with.

While vinegar will lower the pH in the bleach and in turn make the bleach a better disinfectant.., The trade-off for safety purposes is not worth it. And, the vinegar-bleach combo could be lethal as Toxic Chlorine Gases will be discharged into the surrounding airspace.

To clear up any possible confusion and when I speak to the word “bleach”, I am referring to “chlorinated bleach” which contains Sodium Hypochlorite and should never be mixed with ammonia or vinegar – Thanks!

Getting Rid Of Black Mold With Bleach

Wear appropriate PPE (personal protective equipment – N95 Respirator and Gloves) when handling bleach or similarly based mold killing products.

Open any nearby windows (if applicable) to get some air moving and help disperse any fumes or vapors expelling from your bleach solution.

This would apply to small black mold killing projects only – larger jobs may require that negative pressure is put in place to keep mold spores from becoming aerosolized in your home (more on this later).

  • Combine 1 cup of bleach to no less than 1 gallon of water – mix thoroughly.
  • Add mold killing solution to a spray bottle and apply evenly to mold stained area(s).
  • ​You can also wipe your cleaning agent onto mold tainted areas with a sponge or disposable towel.
  • ​If needed, use a small bristled brush to scrub tainted area(s) and wipe away or vacuum with HEPA filters for larger work areas.
  • Do not rinse off your work area. Allow the bleach to continue to disinfect and inhibit further mold growth.

7 Natural Ways To Remove Black Mold

Black mold is disgusting and affronts all of our senses from many directions. It smells, looks gosh-awful and can potentially make you and the rest of the household sick.

Mold and mildew are so offensive, it’s no wonder we often reach for the bleach first! And, advanced mold remediation tasks may require the big guns.

Equally as important, it may be prudent to invest in a mold testing kit to get a good idea of the types of mold spores that may be lurking in your home.

Mold spores will grow unabated in dark areas of a basement. If you have carpet in the basement and it gets wet for any reason (and not allowed to dry properly), you will have a mold farm in short order.

This will also apply to attic spaces, and HVAC systems, if ventilation is at a minimum or the HVAC systems are not serviced and cleaned regularly.​

Cutting-edge, while more expensive mold remediation methods may include, using ice pellets or sand and walnut shells to blast mold away from your basement walls and removing mold in your attic from the wood sheathing and overhead beams.

Nevertheless, ammonia and bleach based products will be better served for cleaning hard nonporous surfaces (in well-ventilated areas).

It’s not always necessary to use the strongest chemical in the house to get rid of black mold. Furthermore, there are many green cleaning natural alternatives that accomplish killing mold at the root level.

And, many of these Eco-greens keep mold spores from growing back in the spots where bleach and ammonia weren’t up for the job.

In the ongoing battle against this fungi, consider your next attack on the mold with green cleaning alternatives. Here are seven ways of killing mold without creating havoc on the environment or your family.

Black Mold Removal With Tea Tree Oil

Getting rid of black mold with tea tree oil has many advantages over using corrosives such as bleach or ammonia based mold cleaning products.

Going green with tea tree oil is not as cheap as using bleach or ammonia. However, a small amount of tea tree oil will go very far in effectively getting rid of black mold. And, the environment and your lungs will thank you for it!

Tea tree oil is a natural fungicide that is effective at killing black mold spores and getting rid of mildew throughout the home. It will work for you equally as a cleaner and as a mold prevention agent.

Non-Cleaning Attributes: Tea Tree Oil is renown for its anti-bacterial and antiseptic properties. The Aborigines of Australia have used it for centuries to treat sore throats and ward off infection from cuts and burns.

All tea tree oils are not “packaged” equally. Check the label first before purchasing and ensure that the contents were made from the Australian tree “melaleuca alternifolia”.

Note: For mold cleaning purposes, check the label carefully for the active ingredients “terpinen 4-ol and cineole (no less than 30% terpinen 4-ol – And no more than 10/15% cineole).

Be careful not to ingest Tea tree oil – it is toxic if swallowed.

Also, wear gloves when using tea tree oil to kill mold. Mild skin irritations are not uncommon to those working without proper safety equipment.

How To Kill Black Mold With Tea Tree Oil

  • Combine 1 teaspoon of to 1 cup of water.
  • Stir or shake thoroughly and put the mixture into your spray bottle.
  • ​Mist mold mixture on tarnished areas and wipe clean.
  • ​No spray bottle – No worries!
  • Thoroughly dampen a disposable towel or old hand towel with green cleaning solution and apply to tarnished area.
  • As a mold prevention measure, apply the tree oil to tile grout or around faucet handles and spouts – then leave to dry)

Black Mold Removal With Vinegar

Killing Black Mold with Vinegar (white-distilled) is inexpensive and a good green way to go when working on small mold remediation projects around the home (although a little smelly).

It has mild acidic properties and is safe to use for everyday mold remediation tasks. As an anti-bacterial agent, it will serve you well when removing black mold from bathrooms and kitchen sinks alike.

Initially, vinegar will have an unpleasant aroma to it (especially in poorly ventilated areas). But, it will soon dissipate over a few hours.

And, for the low costs (and some well-placed elbow grease), vinegar is a great green cleaning alternative to bleach and ammonia.

How To Kill Black Mold With Vinegar

No need to mix anything here (although you can) – white distilled vinegar can be used to clean away black mold as is and right out of the bottle.

  • Evenly spray white (distilled) vinegar onto the mold stains or you can make your own mixture of a vinegar borax-water solution (see below – “How to Kill Black Mold with Borax and Vinegar”)
  • No spray bottle! Just pour the vinegar onto a disposable towel and generously wipe onto the mold covered area(s) and allow to dry for an hour or so.
  • ​Get a damp towel and wipe clean – again, allow to air-dry (this works great as part of a weekly prevention plan to keeping mold out of the kitchen and bathrooms).
  • If staining persists, then give the hydrogen peroxide or baking soda and vinegar combo a shot. The borax-water combo may work for you here as well on any lasting discoloration.
  • Add a little elbow grease with an old toothbrush and you should be good-2-go!

Black Mold Removal With Baking Soda

Removing black mold with baking soda is a great green cleaning solution for the home. As an alternative to bleach and ammonia, baking soda does a pretty good job (with a little elbow grease) at eliminating black mold and its odors.

Besides vinegar, baking soda is one of the better natural cleaning solutions to have around the house. And, is also extremely safe to work with (especially with pets and children running around).

Baking soda not only removes odors from the fridge but, it can also be used in basements, closets, and bathrooms to help prevent mold and mildew odors.

How To Get Rid Of Black Mold With Baking Soda

  • Mix baking soda directly with water in a 50/50 ratio to form a paste for lighter mold stains and prevention.
  • Simply apply paste and let dry (the baking soda will help to bleach out any mold stains as well as absorb any dominant odors – just as it does with odors when using in your closet or fridge).
  • ​Scrub any mold stained areas lightly with a small brush.
  • ​Wipe away any mold debris or remaining cleaning paste (larger areas may require vacuum-cleaning with HEPA filters).
  • Combine 1-2 tablespoons to 2 cups of water and mix in a bowl or pour into a spray bottle.
  • Mix and shake solution thoroughly (otherwise, baking soda will clog your sprayer nozzle).
  • ​Spray or wipe a small solution of baking soda and water to the same area recently cleaned.
  • ​Allow to dry with no further rinse needed (baking soda will continue to deodorize and inhibit future mold growth).
  • Very small mold cleanup jobs can be addressed with no more than 1-2 tablespoons of baking soda and 2 cups of water.
  • ​Shake the solution vigorously in your spray bottle and spray on the contaminated area or wipe on with an old towel.
  • ​Scour the affected area with a tiny brush or old towel and rinse the initial solution off with water.
  • Reapply water and baking soda solution (not paste).
  • Allow to dry – this will leave a thin layer of protection in place to prevent recurrence of mold growth.

Black Mold Removal With Hydrogen Peroxide

Eliminating black mold with hydrogen peroxide is another great alternative to chlorinated bleach. And, is not harmful to the environment to boot.

It is non-toxic, does not leave a toxic residue after use, is very inexpensive and produces no toxic fumes. It also serves wonderfully as an antiviral, antifungal and anti-bacterial agent.

Unlike bleach and ammonia, hydrogen peroxide can be used to remove mold from porous materials such as clothing and walls.

However, hydrogen peroxide also functions as a mild bleaching agent. Spot test any areas to be cleaned first for excessive bleaching.

How To Kill Black Mold With Hydrogen Peroxide

  • Mix a solution of 2 parts water and 1 part 3% hydrogen peroxide into a spray bottle for even and quick application.
  • OR you can soak a disposable towel with the mold killing solution and wipe directly onto the mold tarnished area as well.
  • ​Allow the peroxide solution to sit for 5 to 10 minutes while it cleans and does its work.
  • ​Some light scrubbing with a small brush may be required for stubborn stains.
  • Wipe away any mold debris and allow to dry.

Black Mold Removal With Borax

Borax is a popular chemical used in many household products such as fungicides, herbicides and as a household cleaner. It deodorizes, cleans and disinfects – making it a really good choice to help fight off and kill black mold.

Borax is toxic so be careful not to ingest it. However, it does not release toxic fumes or gasses that would otherwise mandate wearing a respirator to work safely.

Borax is a non-carcinogenic and has been classified as a mild skin irritant. Therefore, as far as mold killing solutions go – Borax is a winner!

How To Eliminate Black Mold With Borax

  • Combine a solution of 1 cup borax to 1 gallon of water and mix well.
  • Spray or wipe on the mold killing solution to the contaminated area.
  • Scrub the mold-tainted area thoroughly with a small brush or old toothbrush.
  • ​Wipe away or vacuum any mold material loosened from scrubbing (use HEPA filters when vacuum-cleaning to capture and contain mold spores).
  • DO Not Rinse (any remaining borax will continue to work for you as a disinfectant and a deodorizer).
  • Allow to air-dry (repeat process if necessary)

Black Mold Removal With Grapefruit Seed Extract

Getting rid of black mold with grapefruit seed extract oil is a process very similar to using tea tree oil. It is a natural and non-toxic green way to go in removing black mold in the home.

Its practical application disinfects, deodorizes AND is safe for everyday use in the home around pets and children. Your family and the environment will appreciate it!

Grapefruit seed extract (oil) can also be used as a black mold prevention tool. It has very little (if any) odor to it. So, daily or weekly use will not run the pets and family off from strong fumes.

It’s going to cost a bit more than ammonia or bleach. However, it stores quite well and has a really good shelf-life (keep lid containers air-tight). When finished with small mold cleaning or prevention projects, simply put your spray bottle (properly labeled) away to use at future date.

How To Get Rid Of Black Mold With Grapefruit Seed Extract

  • Combine and mix 10 drops of grapefruit seed extract oil to each cup of water used. Or 1 drop of oil per tablespoon of water for a baseline ratio (you can strengthen the ratio for more stubborn mold stains).
  • Pour contents into a spray bottle and evenly saturate all of the mold areas to be treated.
  • Allow the mold cleaning solution to work for at least 5 to 10 minutes. Leave to soak for up to an hour for persistent staining.
  • ​Clean and wipe away any remaining mold residue.
  • ​Do not rinse and reapply if necessary.
  • The acids in the grapefruit seed extract will continue to penetrate mold growth as well as prevent any future mold spores from coming back.

Black Mold Removal With Borax And Vinegar

Borax and Vinegar have individual properties that are unique to themselves for attacking and killing mold fungi. And, these mold killing attributes do not cancel each other out when combined together.

Another plus for the environment and You is that when combined, these natural mold killers do not emit any toxic fumes or gasses into the air for you to breathe.

How To Kill Black Mold With Borax And Vinegar

  • Combine ½ cup of vinegar with ¼ cup of borax and 1 quart of warm water.
  • Shake or mix your mold killing solution thoroughly.
  • ​Apply the mixture and a little elbow grease to the affected areas to be treated.
  • ​Wipe away any mold debris that has been dislodged.
  • For persistent stains, repeat the above – wipe clean and leave to dry.

Too many preventable accidents have happened when combining 2 or more cleaning agents together. Often enough, this occurred because the user (although well intentioned) did so to create a stronger cleaning agent for the job at hand.

Please, take the time to read the label and be cautious around all pets and children when working with bleach or ammonia based cleaners – Be Safe!

Mold Removal Toronto says

we use advanced black mold removal procedures to ensure the safety of your home

Black Mold Removal says

Hi Cindy,

Thanks! And, I absolutely agree that if you suspect that you have air quality issues or known mold spores moving about your home; then it is a good idea to hire a professional service to inspect your home and go from there.

Cindy Tesler says

Thanks for the tip to use ice pellets or sand to blast away mold from your basement walls! You also said that tea tree is a natural fungicide that is effective at killing black mold spores. I think it’s important to choose a mold and mildew service that tells you why you have mold in your home so that you can prevent it from happening again later on.

Black Mold Removal says

Hi Allison,

Do you have any conduit or water lines running parallel with the wall in question; are there any minor leaks taking place behind the shared wall? Your situation sounds like there may be a “continuous” water issue taking place beyond what you can see in the shared wall.

Is there any landscaping challenges on the outside wall? For instance, a low depression with a bad gutter system or heavy mulch and organic material (add a little bit of precipitation) will quickly pile up the water table in small areas where the rain cannot evaporate and drain-off. And, if stucco is present, then the excessive moisture will settle in behind it with the inner wall providing a source for continuous mold growth.

Have you called a professional mold remediation service to come out and take a look? Normally, these services are very nominal and/or free for a inspection and some good advice on where you are with the moisture issue and what the next step should be!

Allison says

I live in an apartment complex with mold issues on the outside walls. I live in Oregon so there is a lot of moisture. It is mainly in the bottom corner of the outside wall and wall we share with our neighbor. We have cleaned it several times but it just keeps returning. Please help!

Black Mold Removal says

Hi Kimberly,

Have you considered cutting out the contaminated drywall and carpet? As long as there is a food source and/or moisture present, the mold will continue to spread and flourish. Are there any leaks in pipes on a shared wall for example between a bathroom and your sons bedroom?

Some first priorities could include; stop the moisture by repairing any leaks where needed. Clean, disinfect and cut out (when necessary – like carpet and carpet padding for example) contaminated mold. And, always wear and use “Personal Protective Equipment” (like a full face respirator and/or goggles, neoprene gloves and disposable paper coveralls) when working around any chemical and mold spores.

You might consider calling a professional mold remediation service and have them come out (many times no charge for estimate from the reputable guys and gals). Take good notes with options on what they have observed and go from there.

ws

Kimberly says

Hey Wesley,
I live in a trailer and have discovered mold in a few places while spring cleaning. One place was under the trim at the bottom of the wall in my son’s room. I had researched how to kill mold and found the vinegar option. I sprayed the wall with vinegar (white distilled) and waited a couple of hours. Then I pulled the trim off that was damaged beyond repair and scrubbed the wall. There is still a yellowish color in some places. In the process I scrubbed the wallpaper and part of the wall off. I think it may be in the carpet as well. I am concerned about it being toxic mold too. I do not have the money for home improvements right now as I can barely pay my basic bills. I am concerned now that I may have disturbed the problem and was wondering what can I do to somewhat safely live with this problem until I can have carpets and possibly floors and walls redone. I have no insurance either. What should I do?

Black Mold Removal says

Hi Andrew,

The borax solution may slow down the expansion of the mold growth or inhibit it. However, it is a “wet” solution. And, in a environment that is already rich with humidity, the borax solution may not be the best choice.

I am leaning towards cutting out the contaminated straw (as you suggested) prior to plastering and finishing. Do you have plans to add any anti-bacterial or anti-fungal agents to your plaster? If not, I would certainly consider it a good step in the right direction for prevention measures.
The bottom areas you referenced to would need to dry out as much as possible before plastering. Would hate to see the foundation encapsulated in moisture – have you access to portable carpet blowers – these would help the drying process greatly.

Perhaps just cutting out the contaminated portions down an inch or so and applying a fungicide would be more practical for your needs.

Hope this helps – Let me know how it goes for You!

Andrew says

Hi Wes,
Thanks for the great eco tips.

We are building a strawbale house in Australia and have had moist air over the winter cause mould to form on some of the loose strands of straw [rice straw]. We have not covered with the clay plaster as yet. I was considering the borax and water solution, cutting back the bale a bit first. Some of the stalks have light grey discoloration about an inch or so up inside the stalk. It is not over all the bale just here and there.

We also had some of the bales wick moisture up from the bottom when we had a wet spell (before we had the roof on we had plastic over the walls), they are sitting up on a stone rubble bed but they still sucked up some water. They seem to have dried out well but wondering if you have any ideas.

Really appreciate your time.
Andrew

Black Mold Removal says

Hi Linda,

Yes, I believe you can save your wall! However, any drywall that has gotten wet for a period of time will probably have to be cut out. Mold spores can develop fairly quickly and grow quickly within the wall voids between the studs and elsewhere.

Mold absolutely thrives in an environment that offers warmth, low nitrogen, high cellulose content in which to feed and finally moisture to keep it going. A bathroom wall void and the paper on drywall is such a place.

After denying the moisture that spurs rapid mold growth, the contaminated or moist food source (the affected drywall), will have to be cut out and then replaced.

If there is any mold growth in the wall voids, then a non-toxic, organic molderizer (such as the one made by “Safe Shield”) should do the trick for you.

Let me know how it goes – Best and good luck with all!

Linda says

Thanks for your eco-tips Wesley, they are great. We recently had to replace seal under toilet and hired a friend to do it. Wrong seal was used and toilet water leaked onto floor and into wall/drywall behind it. Was not discovered immediately and water soaked about 3 inches up into dry wall and possibly the substrate floor (wood) under the ceramic tile. Scraped off some of the wall & have been drying for several days. Can I save the existing wall and the floor without tearing everything up? Expense is a factor and I’m not a very good DIY’er for projects like this. I don’t think our ‘friend’ is either. Thanks for any suggestions. Lin/Linda

Black Mold Removal says

Hi Tanya,

Depending on how far advanced your mold challenge is; you could (on the cheap), heavily cover the entire cushion with baking soda. Allow the baking soda to soak into the cells and fibers of the cushion overnight (first one side and then the other for the second night).

Thoroughly shake and beat the cushions smartly to get rid of any remaining baking soda. Apply white distilled vinegar and give the cushion a quick – but well covered light bath and allow to disinfect, kill odors and then allow to dry.

Many foam type products do not age well and they are porous so mold will be difficult to get rid of (if not impossible) when the mold or mildew gets deep into the cells or fibers of the cushion material.

There are many foam products on the cheap today and it might just be the way to go – Thanks for stopping By

Tanya says

Hi
Working on 1970 camper and foam seating/ bed appear to have mold . Presently washing covering borax but what about foam . I intend to recover in vinial later. What to do now will anything penitents 5 inch thick foam thanks

Black Mold Removal says

Many good points Joseph!

Black Mold Removal says

Hi Eric,

I picked up the tip when initially researching how to clean toxins from vegetables naturally; and, learned along the way the many other benefits that Grapefruit Seed Extract offers. BTW, it can also be used to help keep your hot tub and Jacuzzi disinfected!

joseph says

Mold is one of the worst enemies your home can have. Once growth begins, it can spread and grow in your home or even yourself. Its growth can also cause deterioration in the structural integrity of your home through fungal growth and rot.

It grows in areas with excess moisture, which can be caused by a variety of factors. If not treated properly and in a timely manner, it could lead to health problems.

When airborne mold spores are present in large numbers, they can cause allergic reactions, asthma episodes, infections, and other respiratory problems for people. Exposure to high spore levels can cause the development of an allergy to the mold. Similarly, when wood goes through a period of wetting, then drying, it can eventually warp and cause walls to crack or become structurally weak.

Eric Rajchel says

Hey Wes, thanks for the very informative article. I am in the mold industry and have never heard of the Grape Seed Extract for removal. Is that something you came up with or where did you hear about it? Just curious

Black Mold Removal says

Brent,

Gary Sullivan is right. ZymeAway is a wonderful organic and “Non-Toxic Enzyme Cleaner” that does much more than get rid of mold. Glad to see you are keeping the mold at bay. Thanks for stopping by!

Brent Bielema says

Gary Sullivan of ‘On The House’ radio program recommends a product called Zyme-Away. Otherwise, thanks for providing this article — we have a lot of these natural products already so we’re ready to take on the mold menace!

Black Mold Removal says

Laneea,
It may be best to contact a certified mold inspection company to take a look at your mold challenges and then go from there. You can do a local search to find one near you.

laneea says

We recently redid our bathroom in our house to move back in. A couple months later we now have black mold on the ceiling of the bathroom where there was a leak and in the next room where my step sons room is.

Black Mold Removal says

Hi Querida,
I would stay away from any abrasive paste or chemical compounds that might damage, disfigure or discolor the natural markings of this beautiful resource. For your mold cleaning purposes, the natural silica content of the stone hinders and resists acid attacks – so this will help.

The silica content will also protect the stone from outside weathering forces.

One non-caustic and non-acidic mold cleanser that you might have tried – or not – is “Wet and Forget”. It is very mild and may take a period of time to get the job done (dependent on the conditions).

It is Eco-friendly, is labeled for safe use on “Hinuera Stone”, requires no scrubbing or water pressure applied during cleaning and can be used on a number of outdoor projects (with the exception of natural marble) to get rid of mold and mildew.

See http://www.wetandforget.co.nz and http://www.kiwicare.co.nz/cleaning/surfaces/h-p/hinuera-limestone/ and go from there. Let me know how it goes – Best to You!

Querida Smith says

We have extensive black mould on our exterior Hinuera stone walls. Do you have any recommendations for killing this? Hinuera is a soft volcanic stone in a creamy colour that comes from a specific area of New Zealand. See hinuera.co.nz
Thanks

Black Mold Removal says

Hi Ronen,

You are right to avoid using a water solution (beyond light misting or using a damp towel on your side of the wall for general cleaning purposes). However, I would not drill any holes or attempt to put any powdery substances behind your drywall.

It does not take very much water to create a environment in which mold can flourish. Especially behind walls or above drop down/suspended ceilings.

Before the water was introduced to your ceiling and drywall; mold spores were most likely already present and only needed a catalyst, such as water to help them grow.

Light is non-existent in most cases and there is usually no ventilation behind walls which will allow moisture to linger and contribute to rapid mold growth.

If you have a suspended type ceiling and see small dimples take shape around the fasteners, then your ceiling is giving way to gravity and ready to collapse. And, if you see any bubbles appearing in the drywall, then you may have pooled water on the other side (you can punch a nail through the drywall to allow the standing water to drain into a container).

Gently use your fingers to press around the ceiling and drywall. If you get a mushy feel to it, do not press any harder and call a professional water damage consultant to come out and go from there (as well as the Landlord if applicable).

If you see any staining appear on your side of the drywall or ceiling, then get going on your mold remediation project as soon as possible.

For you DIY folks, then this entire section – and more – will have to be cut out. Be cautious of wires, TV cables and water lines before cutting away!

The affected area(s) will have to be cleaned to remove any mold debris and developed mold spores from the adjacent interior walls and then allowed to completely dry before replacing.

Replacing water damaged drywall is not very tough for the experienced DIY’er . However, if this is your first go at it – then it would probably be a good idea to call a professional to take care of it for you.

Whether you go it alone or call out to some experienced help; it is important to get the affected ceiling area and/or adjacent drywall cut out (if needed), treated, dried-out and replaced; as soon as possible.

Good Luck Ronen – Let me know how it goes!
Wesley

Ronen says

My upstairs neighbor leaked water over my bedroom wall. It seaped under my ceiling. I am afraid water in now in my wallboard wall. Can I spray some kind of powder into the wall cavity to provent mold if I drill a hole at the top of the wall? I want to avoid a water solution because that will warp my wallboard.

Black Mold Removal says

Hi Patty,

Thank-you and glad to help! Thoughts and blessings to all of you and yours for your recent losses and all of the challenges on your doorstep today… Your neighbors, friends, family and community are a real inspiration as you continue to pick each other up and move forward! Stay the course – keep the faith.

I use the Tea Tree Oil and Grapefruit extract formulas primarily in my bathrooms, basement and kitchen/laundry areas. It doesn’t take much and it goes a very long way.

However, if one of my sheds had lost a roof or sidewall and/or was exposed to the elements for any length of time (to include the slab); and I needed to get a handle on the mold growth asap; I would probably go with one of the two products below as the first step.

One non-toxic cleaning agent for mold removal is “Molderizer” and you can get it in 32oz as well as by the gallon. I believe the 32oz can be found for under $20 and the gallon size for just under $50.

Another good product for cleaning mold from countertops to decks, patios and indoor sheds or garages is made by “Concrobium”. The “ConcrobiumXT Eco Wash” product is a non-toxic mold cleaner as well and is ideal for wood, composite wood, stone, stucco, vinyl, aluminum and much more. They also have a “Mold Stain Eraser” product that would probably help you with your project.

I had excellent results with this product when I had some recent water and mold issues in my basement. Its plant friendly which is awesome for restoring decks and garages with vegetation nearby and does not emit any harmful odors or harsh fumes.

You can find both of these Eco-friendly mold cleaners at just about any major hardware store. There are a handful of grocery chain outlets out there (hopefully near you) as well that carry the “Concrobium” Product line.

Let me know how it goes for you on your journey forward and if there is anything else that you might need help with!

Take Care – Best to You and Yours,
Wesley

patty pursifull lang says

My home has been damaged by the May 20th and May 31st tornados in Moore, OK. I did not want to use Clorox due to fumes and water supply. Some of your alternative solutions were new to me such as the Tea Tree Oil and Grapefruit extract. Being specific about mixing amounts helps me use my first thoughts of Vinegar or Hydrogen Pyroxide which I have on hand. I have a horrible area in one of my sheds and really appreciate the advise. Thank You. 🙂

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