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Top Reasons to Seal Your Home

Reduce Energy Costs

A knowledgeable homeowner or contractor could cost-effectively seal air leaks in a home by focusing on leaks to the attic space, through the foundation, and around windows and doors. This could reduce air leakage in a home by about 45 percent (from 0.91 ACH to 0.50 ACH).

Prevent Mold

Improperly sealed sinks, faucets, bathtubs, and other water sources can be a breeding ground for mold growth, causing an unpleasant appearance as well as health risks and odors. Use a 100 percent silicone caulk that is 100 percent waterproof to help prevent mold growth on caulk.

Avoid Allergens

Proper sealing means there are fewer holes for pollen, dust, and pollution to infiltrate the house, reducing your risk of allergies.1, 2

Prevent Water Damage

Water leakage from rain, ice, or snow through cracks and gaps on the outside of your home can cause water damage to the interior or exterior of your home. Once moisture gets into wall cavities and condenses, it can result in costly damage to framing, structure, and insulation.2

Breathe Easy

Proper sealing reduces the infiltration of outdoor air pollutants, and reduces moisture infiltration from outdoor air in humid climates.1 Too much moisture in a home can lead to mold, mildew, and other biological growth.2

Prevent Air Leaks

Air leaking through gaps and cracks in a home can add up to as much airflow as an open window.3

Seal Out Bugs in the Home

Water bugs, mites, ants, and other pests can find their way into your home through small holes.

Keep Your Home Quiet

Proper sealing helps reduce outside noise, making your home quiet and cozy.1

Maintain Proper Humidity Levels

Generally, during the winter months, air leaks in the home allow warm, humid air to escape, drawing in drier air and changing the humidity levels in the home. When humidity levels are below 30 percent relative humidity, people can be uncomfortable and can suffer from dry mucous membranes, which can lead to nosebleeds and infections.3


Don't Waste Time and Energy

Not all caulk is the same. Because silicone is permanently waterproof, flexible, and shrink-/crack-proof, unlike most non-silicone caulks, it won't leave gaps or cracks for air and water to seep through over time. Those leaks can lead to water damage, mold growth, and higher energy bills—all of which can translate into your lost time (when you have to do the job again), lost energy, and lost money.

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Frequently Asked Questions

Testing for Energy Leaks

Home Sealing Checklist