Case Studies

Rainy Day Basement Systems Case Studies: Sagging Crawl Space Floors Repair in Everett, WA

Thursday, May 11th, 2017 by Chantele Machado


Violeta S. contacted us because she was concerned about the foundation of her home. She purchased the Everett house back in 2003 and built an addition to it shortly thereafter. In recent years, she started seeing cracks in her drywall and noticed the sliding door to her balcony on the second floor was getting more difficult to close. We sent an inspector out to her home to perform a free inspection and estimate. He determined that the damages Violeta was seeing were from the newer addition settling and breaking away from the original structure. Most of the foundation support pads below addition were sinking as well, creating a gap between the posts and piers. Knowing these problems would not resolve themselves, and likely become worse, Violeta went ahead with the suggestions of our inspector to prevent any future damages that could be more costly. 


To re-stabilize the addition of Violeta’s home, we sistered the existing support beam with a new laminated veneer lumber beam. We also added two new steel I-beams to provide further support to the overspanned floor joist in the older part of the home. Below the new beams, we installed 18 SmartJack Crawl Space Stabilizers. SmartJacks are high-capacity steel piers that were designed to prevent settling. The piers are also adjustable, so they can raise the floor back to its original level and continue to be adjusted if further settling does occur.

We also replaced Violeta’s pre-existing 6 mils. black vapor barrier with a much more durable and effective option. The CleanSpace Crawl Space Lining is 20 mm thick and made up of seven layers that include high and low-density polyethylene with two layers of polyester cord reinforcement. The lining is fastened directly to the foundation walls and is so strong it cannot be torn down. It creates a substantial, and lasting, barrier to separate the home from the Earth below, resulting in a significant decrease in moisture and humidity levels.

A SaniDry CX Dehumidifier was added to give Violeta the ultimate control over the humidity levels of her crawl space. And because the SaniDry is completely automatic, she will never have to turn it on or empty its reservoir. The discharge line from the dehumidifier leads into the SmartDrain we installed. The SmartDrain features a bottomless basin with an airtight lid. This design allows for water to seep back into the earth, but not evaporate back into the crawl space. It also includes a WaterWatch Alarm that sits atop the lid that will sound off similarly to a fire alarm if it detects water. This way, if for some reason a pipe bursts or water gets in the crawl space for any other reason, Violeta will know right away and be able to address the situation promptly. Finally, we installed an EverLast Crawl Space Door. The EverLast doors are made from a completely inorganic material that will never rust or support the growth of mold and mildew. It also has weather strips around its edges to provide an airtight seal when shut.