Removing Moldy, Mildewy Basement Odors
Removing Basement Odors
If you have a basement in your home and it tends to hold musty odors, don’t feel bad, you’re not alone. The basement can be one of the smelliest places in the house and the odor can be caused by a variety of things.
If you have tried to make it smell better by using deodorizers and air fresheners, then you know the effect is only a temporary fix. It is far more important in the long run to get the odor under control and fix the problem before it worsens.
There are a few easy steps to take when it comes to basement odors:
- Remove or repair the problem that is causing the smell.
- Clean the area to reduce the smell.
- Control and prevent any odor from coming back.
Luckily, there are some common things that cause odors to develop, and they can be easily fixed.
What can Cause the Old, Musty Basement Smell?
Basements are one of the most common odor producers in the home, right behind the refrigerator and the cat box. There are several things that can cause basement odors. Below are the most common causes of smelly basements and what you can do to fix the issue.
1. Inadequate Basement Cleaning
Inadequate cleaning (which makes me think of the old saying: “out of sight, out of mind”) leaves behind a buildup of dust, dirt, grime, cobwebs and decay. Insects and rodents can also take up residence without your knowing. If you have pets that have access to the basement, they could also be leaving little gifts behind you don’t know about.
So if you don’t clean the basement on a regular basis, there is every chance the conditions are right for the makings of odors, mold and mildew. So what do you do?
Give the Basement a Good Overall Cleaning
A clean area doesn’t just look better, it smells better. When there is clutter, it reduces air flow and mildew will frequently develop on decaying items.
Start at the ceiling, clean down the walls and behind everything. Clear out old junk stored in the basement. Remove things that absorb moisture or can put off bad smells such as old papers, magazines, books, clothing, furniture, carpet and things packed in cardboard boxes.
If you had clothes in cardboard wanted to keep them, try washing them. If there are heirlooms pieces, try a professional. Unfortunately, some clothes might not make it. When you repack items, opt to store them in plastic storage containers with secure lids.
If you were storing upholstered furniture, seat cushions, etc. some of these items may be too stinky to save, some may be saved by vacuuming and spot cleaning them.
2. Moisture in the Basement
One of the most common problems with a basement is the amount of moisture that can happen. Moisture causes mold, mildew, bacteria, fungal growth and causes wood, fabric and paper to rot.
Moisture can happen from:
- Leaking windows
- Basement doors
- Cracks in the foundation
- Wall cracks
- Leaking pipes
- Standing water
Fixing Moisture Issues in the Basement
If you have a moisture problem, you need to get the basement dry and the humidity down. To do this, use a dehumidifier and air out the location by opening windows. If you see water leaking from faucets or pipes or cracks in your foundation, get them repaired. If all you see is water stains, investigate and find the source of the stain and get it fixed.
If there is moisture, unfortunately anything not stored up off the floor like a rolled up carpet, things stored in cardboard boxes, furniture, etc. may be too bad to keep.
3. Poor Air Circulation in the Basement
Poor air circulation all by itself isn’t a cause of basement odor, but it does make it worse by allowing air to become stagnant which can allow bad smells to become more obvious. Moving air also helps water evaporate. Stagnant air makes mold and mildew worse when spores are released into the air and easily spread to other damp areas.
To fix poor air circulation issues, get the air moving by opening a window, turn on a fan, install a screen and open doors.
4. Low Light and Temperature Issues in the Basement
Low lighting and air temperature can also promote odors. Dark, damp, low light and air circulation creates the perfect environment for mold and mildew to grow or basement contents to decay.
To fix these issues, bring up the air temperature by using a portable area heater, turn on the lights and open the curtains. Heated rooms help water evaporate plus you’ll be able to see the problem areas more easily in the light.
5. Mold and Mildew Growth
Mold, mildew and fungus grows in damp areas with low lighting and thrives with poor air circulation. These organisms put off a gas that we most commonly associate with a smelly basement. Poor air circulation makes the smell worse and allows the spread of mold and mildew to other areas over time.
Fixing Mold and Mildew Issues in the Basement
You need to clean up mold and mildew right away and scrub away visible stains. Borax is the perfect thing to use as it’s a natural mineral cleaner that also kills fungus (fungicide) and prevents further growth.
To Clean: To make your mold and mildew cleaning solution mix the following in a bucket or add what you can to a spray bottle:
- 1 cup of borax cleaner
- 1 gallon of hot water
Use a scrub brush to clean the area and follow with a rinse of clean water as borax will leave a residue.
To Remove Stains: Remove stains and fight off mold and mildew regrowth with a bleach and water solution:
- 1/2 cup of bleach
- 1 gallon hot water
Pour the solution in a spray bottle and spray the areas where you see visible mold or mildew stains. Keep in mind that there is water in this solution, so use sparingly to avoid contributing to a moisture problem. Bleach will liquefy, sanitize and remove the color on contact, depending on the surface it’s being used on.
How to Keep Your Basement Smelling Fresh
There are several things you can do to keep odors at bay and keep your basement smelling fresh and clean.
- Keep the basement adequately ventilated. Air needs to flow through the home to allow it to be clean. To make sure this happens, have air ducts cleaned and also have your ventilation system checked yearly.
- Control the humidity. The biggest odor causing problem in homes is that of mildew and mold. Use ventilation, windows, dehumidifiers and effective means for keeping water out to keep the level of humidity down.
- Clean your dryer vent. Start outside where it exits and follow it down into the home to the base of the dryer. Blocked dryer vents allow moisture to build up in the home. If the dryer is in the basement, this can be the original source of basement odors to start with. Rodents can take up residence in the vent attracted to the lint that makes a nice nest and warm temperatures.
- Waterproof the basement. Water is the cause of many air quality problems. Make sure the basement is waterproof. A small leak can cause a tremendous amount of moisture and cause bad odors.
- Keep the house clean. Take the garbage out of the house regularly. Keep the floors clean and spills cleaned up. Take care of those places that people like to avoid like the basement and the garage. Use products that will eliminate mold and mildew from your home.
- Repair all leaks. If you suspect that your foundation or the beams in your home have gotten wet or damaged, have a professional come out and make sure. Weakened structures are not safe and will cause you to become injured and cause odor in the home.