Brick is designed to absorb moisture, but it is also designed to let it evaporate as well. So in general, the goal shouldn’t necessarily be keeping moisture out but making sure it has the room to breathe. If you have excess moisture getting through your brick wall, it’s more likely that you have a crack or other issue at play that a typical sealant won’t fix. So, instead of investing in sealant, try repairing your brick wall instead.

Topical sealers adhere to the surface of concrete to create a protective layer. In many cases, this is all you need for concrete that sees light to moderate traffic, such as your basement. Penetrating sealers, on the other hand, bond with the free lime in the top layer of concrete to form calcium silicate, which prevents liquid from passing through. This type of sealer protects the surface from water, oil, and gasoline spills.

A moisture or vapor barrier helps separate the warm air inside your home from the cold air outside of it. Without it, your walls could collect condensation, mold, or other damage. Check your local building codes to see if including an interior vapor barrier is necessary for your building project or renovation, especially for rooms that are likely to be humid, like bathrooms.

Many prevention methods can be used individually or in combination to waterproof your basement. Some of the most common waterproofing methods include:

• Using dehumidifiers 

• Silicate concrete sealers

• Vapor barriers 

• Baseboard channels 

• Drain tile systems

• Waterproofing paint

• Drainage systems

• Epoxy injection

• Interior French drains

• Exterior excavation and waterproofing

• Cement waterproofing

• Weep tiles

• Liquid membrane

• Sheet membrane 

• Yard grading

• Gutters and downspouts