What Is the ideal humidity for a basement?
Maintaining balanced humidity levels in your basement can make a big difference for your home, your valuables, and the people living inside it. This article shares some tips to help you feel confident in monitoring and managing moisture in your basement year-round.
Normal basement humidity levels
Ideal basement humidity levels fall between 30 - 50%. Dropping below 30% can cause gaps between windows and doors, creaky wood floors and damage to your belongings.
On the other hand, reaching above 50% can lead to mildew, mold and bacteria growth, negatively impacting both your health and your home.
Locating your basement humidity source
One of the best ways to address basement humidity levels is to manage the moisture at its source. While consulting with a professional is always helpful, you can get a headstart with the following methods.
Seal off drafts
Gaps and cracks in windows, doorways and walls can cause excess moisture to collect in your basement. Sealants like caulking and weatherstripping can help close the gaps and fix the issue.
Maintain your sump pump and vents
Improperly sealed sump pits and drains can introduce extra moisture into your basement. Keeping them well-maintained and having them checked by a professional every three to four months can go a long way.
Repair leaks
Leaking pipes, washing machines and water heaters can affect your basement’s humidity and sometimes lead to a spike in your utility bills. To spot them, look for wet spots, rust or condensation around these areas.
Clean gutters
Clogged gutters can pool rainwater and melting snow around your home’s foundation, saturating your basement floors and walls. Consider positioning gutter spouts to draw water away from your home to help reduce moisture levels inside.
Managing your basement humidity levels
Some humidity issues are more severe than others. However, there are several accessible tools you can use to maintain appropriate moisture levels in your basement and home.
Dehumidifiers
There are different dehumidifier types, such as refrigerant and desiccant, as well as whole-house ventilation systems. They can help you manage moisture levels in your entire home, a single room or a crawlspace.
Before purchasing yours, consult an expert. They can help you find a suitable model and size that best addresses the humidity in your basement.
Exhaust fan
Keeping your basement well-ventilated is another great way to manage humidity. If natural airflow isn’t an option, an exhaust fan installed in a window or exterior wall can draw out moisture and even control unwanted odors.
Chemical absorbents
If you need a fast-acting, inexpensive, moisture-removing option, chemical absorbers, such as silica gel, may be able to help. They’re typically sold in home improvement stores and can be placed in other parts of your home as well.
Water leak detector
Water leak detectors help you catch leaks early with features like real-time alerts to your phone. You can install them on sinks, appliances and water heaters and they may even qualify you for our smart home discount.
Humidity monitor
A humidity monitor can help you track your basement’s humidity levels. Some dehumidifiers and exhaust fans come with them built in, but you can also buy a stand-alone model that hangs on your wall.
How American Family Insurance can help protect your home
Our standard home insurance may help protect you from sudden, accidental water damage. Qualifying events may include burst pipes or broken-down appliances.*
If you want more protection from unexpected losses, get in touch about the following coverages:
- Hidden Water coverage: Provides a broader net of protection for leaks you can’t see within the walls, floors, ceilings, cabinets or anywhere else that isn’t visible in your home.**
- Flood insurance: With the National Flood Insurance Program, we offer flood damage protection for your home and possessions.***
- Water back-up coverage: Helps mitigate the cost of repairs caused by water coming back into a home due to a backed-up drain or an overflowing sump.*
Need flood coverage?
Inland Flood coverage helps financially protect you from flash flood damage. Covered events include flooding from inland waters overflowing onto normally dry land.†
*This information represents only a brief description of coverages, is not part of your policy, and is not a promise or guarantee of coverage. If there is any conflict between this information and your policy, the provisions of the policy will prevail. Insurance policy terms and conditions may apply. Exclusions may apply to policies, endorsements, or riders. Coverage may vary by state and may be subject to change. Some products are not available in every state. Please read the policy and endorsements for exact details on coverage limits and exclusions.
**Hidden Water Damage coverage is an optional coverage. Some restrictions apply to seasonal homes and manufactured homes. Limits, exclusions and deductible apply. Availability varies based on the way you purchase insurance and by state. Refer to your policy or talk to your agent for details.
***American Family Insurance is a participant in the National Flood Insurance Program (NFIP) managed by the Federal Emergency Management Agency (FEMA). Flood insurance is a separate policy underwritten by NFIP.
†Coverage provided by adding the Inland Flood optional endorsement. This endorsement does not satisfy mandatory flood insurance coverage should it be required by your federally regulated lender for your home mortgage or loan. This insurance product is not affiliated with the National Flood Insurance Program (NFIP). Limits, exclusions and deductible apply. Availability varies based on the way you purchase insurance and by state. Refer to your policy or talk to your agent for details.
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