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The Steps of Building a House Part 7 : Building a Waterproof Home

It is impossible to keep a home dry all the time. With the weather elements of rain, snow, and whatever else Mother Nature decides to throw at your home, keeping your home dry in key areas should be the focus. There are a few places: the foundation and the basement, which can be disastrous if they get wet and moisture gets trapped.

A shifting foundation and a moldy, musty basement are just a few problems moisture in these two key areas water can create. Check out a two all important steps in building a strong, moisture proof home that you don’t want to overlook, as we continue our series on building a home.


The process of flashing your home keeps water out of foundation of the house. It also keeps water out of the basement. This flashing process prevents long term water damage from destroying your home. Not all home builders do it but it’s crucial for a well-built home.

Flashing is a thin layer of waterproof material that prevents water from seeping into places it does not belong. This is mainly for larger gaps outside of the home. Smaller gaps can be filled in with caulking. Flashing, when done correctly, should be installed so no seams face uphill. It also usually layered with other building materials.

If you wonder whether flashing has been installed the proper way, follow a drop of rain water as it moves down the side of your house. It should be carried from surface to surface all the way down and never encountering an open seam or an upturned lip that blocks its progress.


While flashing is a critical element of keeping your home’s foundation and basement moisture free, tarring also adds this element. The process of tarring creates a water barrier that keeps water and dampness out of your home. This is frequently done early in the process of building a home, shortly after the foundation is laid. If tarring is neglected, however, it can spell disastrous results for the long term future of your home.

Want a waterproof foundations and basement? Spending the extra time required to do flashing and tarring to your home during the building process is crucial. If these steps are skipped, your home will not be set on the firm foundation it needs.


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