Basement Walls Waterproofing
- On the Outside

What about those basement walls? Waterproofing them needs to be done; why haven't you completed that project yet? When things need to be done on the inside, most of us can give it the "old college try". But when it comes to the outside, sometimes we hesitate and may decide that the project is too much. Possibly, but it can be done.

Waterproofing processes that are done on the exterior are typically more involved and much more expensive compared to those processes for the interior basement walls. Waterproofing which is a great deal more expensive for your basement walls, waterproofing on the outside is actually more effective against wicking and molding of interior materials. For long term, and of course this is the only way to go, use only sealants and barriers that are designed for outside environments.

The International Building Code recognizes that waterproofing the outside of a structure is the only method that is adequate in preventing water damage of the interior. When complying with this code, there are several methods you can choose from. One option available is to install footer drains. This particular type of drain is designed to keep water away from the foundation. They are installed around the entire perimeter of the structure. Or you could choose to use an external sealer or barrier.

Sealants and barriers are generally made of asphalt or even cement and mixed with a unique waterproof base. Examples of such bases can be polymer or a rubber. When the product is correctly applied, it can be an extremely protective barrier for a very long time. Do not doubt the quality of these products. Over time, technology has been able to refine these products and is now better than ever before.

A polymer based product should last for decades and the soil will not affect the product in the slightest. One of the main advantages of a polymer waterproofing products is the low viscosity; so low that the product can be sprayed on. In addition, they dry fast and are somewhat flexible. This offers allowance for any possible foundation movement that may occur. The ease of the applications allows basement walls and waterproofing to be relatively quick and effective.

You could also choose this next option; it's called a diversion system. This particular system is generally placed on the structure's roof and redirects water off and away from your home. These can be installed yourself or have a professional do the installation instead.

Another option to consider is a sump pump which is an external installation option. This particular pump is perfect for those who live in areas that get high levels of rain or elevated water tables. It's a mechanical pump which collects water and then reroutes it away from the structure. Installation can be installed in the ground or above. If it's a submersible option, it may be difficult to get to if repairs are ever needed; you want to consider an above ground version.

Before you make any final decision, consider all waterproofing options. For your basement walls, waterproofing on the outside will be more work but the results will be a dry foundation and basement for years to come.