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How to Remove Mold in Crawl Space?

Crawl space, just like its name suggests, is the space between the floor and the foundation of a house and is accessed by way of crawling since it is usually low. It is usually moist, hot and dark, making it the most susceptible to mold growth since these are perfect thriving conditions for mold. Whether it is common or harmful mold, no mold should be allowed to grow in the crawl space because it can cause massive structural damage that could even cost you the whole house. This article gives a detailed process on how to remove mold growing in crawl space.

Damage Assessment

The first step in dealing with mold in crawl space is conducting a damage assessment. The assessment is meant to ascertain the levels of mold infestation and the most affected areas. This helps you to effectively plan on the techniques you will apply when removing the mold. If the infestation is light, it then means that you can do the removal by yourself. If the infestation is extensive, then you might want to call for professional help.

Mold Removal Preparation

After a thorough assessment, then follows the preparation step, which involves getting the right tools and chemicals for removal. It also involves preparing the surfaces for the removal process. In this regard, gather some gloves, a facemask, a hard scrub brush, foaming spray, and mold kill chemicals. Spread a plastic sheet on the floor surface so that the dead mold spores can fall here for easy disposal.

Apply a Foaming Spray

Since you cannot remove mold in its stuck on state, something is needed to loosen and lighten it so that the mold kill chemical can act on it effectively. Applying a foaming spray is a good way to do this. You can apply the foaming spray by the use of an electrified foam motor. This one is the best since it can spray even in the most hidden spots. After you have done this, let the foam sit for quite a while before applying the mold kill chemicals.

Apply Mold Kill Chemicals

After the mold has been loosened and lightened by the foaming spray, it is now a good time to apply a mold kill chemical. You can make your mold kill chemicals by mixing vinegar and water in equal proportions. You could also use lemon water or baking soda. Alternatively, you can mix two spoonful of hydrogen peroxide to two glasses of water and use a spray bottle to apply the solution over the mold spores. Then let it sit for about 30 minutes.

Scrub Off the Surfaces

After the mold kill chemical has been on the surface for some time, then use a hard scrub brush to remove the dead mold spores from the surfaces. This is the most tedious task of DIY mold removal and it will require you to kneel and bend for some time. It will also involve the use of some energy but it is an effective way of burning some calories if you spend most of your time behind your office desk. However, it is only meant for the physically fit and you should never try it if at all you have an underlying physical issue. Then, finally remove the entire dead mold on the plastic sheet and dump it together with all the contaminated materials into the dumpster.


Without the proper future mold infestation prevention mechanisms in place, the mold battle is far from over. This is because, without prevention measures, you will soon go back to the same mold issues. Since you had conducted a thorough damage assessment, in the beginning, you should easily know what areas are the worst hit. Check all the drainage and water systems to ensure no leakages; and if there are any, have them repaired soon. Install a dehumidifier to deal with the issue of moisture buildup. If you are unsure of where the mold could be coming from, then it is advisable to call for professional services.

Calling for professional mold removal services is the best way to deal with mold problems in the crawl space since this can be very tiring due to its complex access. There are also lots of hidden and hard to reach spots, making the whole work even harder. A professional has the necessary skills and expertise to deal with mold in such areas and will recommend and apply the required preventive measures.

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