Alexandria Office: (703) 552-8201 | Vienna/McLean Area: (571) 260-5016

Residential Crawl Space Solutions

If you have a problem with your crawl space, it is important to have a professional implement the proper repair solution to ensure there are no more future issues. Whether you're plagued by excess water, mold growth, critters in the area, or a sagging floor, our team is experienced in providing expert solutions to these problems.

The solutions available in a crawl space will typically fall into one category, closing off the crawl space and treating the closed-off area to ensure no more problems arise.


Crawl Space Encapsulation

Encapsulating a crawl space is very different from installing a basement waterproofing system and is the first step in solving most crawl space problems. This involves the installation of a heavy-duty crawl space liner along the floor and walls of the crawl space. The liner is completely waterproof and will prevent any new water from entering the area. Once the liner is installed, any vents will be closed and a sealed door will be installed to completely close off the crawl space from the outside elements.


A dehumidifier installed in the crawl space will control any excess humidity. This will prevent the growth of mold and mildew as well as prevent future damage that could be caused by excess humidity such as sagging floor beams or poor air quality.

Floor Joist Repair

Crawl Space Floor Joist Supports

Relative to other types of structural or foundation damage, rotted or damaged floor joists are relatively easy and inexpensive to repair. The most common retrofit for a damaged joist or girder is the "sistering" method. This method involves installing a "sister beam" alongside the existing deteriorated member for extra strength. Girder and joist jacks can be installed at specific locations along the structure to support the load. Once in place, the floor can be secured in place or lifted to bring the floor back to a level position.

Additional Solutions

In addition to our normal crawl space solutions, if there is excess water entering the crawl space we may implement some of our basement waterproofing solutions such as perimeter drains or sump pump system installation.

Contact Us

If you've got any type of problems with your crawl space, please contact us today set up a time for one of our experts to come out and inspect your crawl space and help devise a repair solution.

Customer Reviews

Average rating for Deska Foundation Repair & Basement Waterproofing is 5 stars of 5 stars - based on 8 reviews
Epoxy Injection in Alexandria, VA
I had a leaking crack in my foundation that they epoxy injected. I was pleased with the service and I haven't had any issues since!
Coignez S - Alexandria, VA 22312
Basement Waterproofing in Alexandria, VA
We were very pleased with Deska. Our foundation walls were cracked really badly. The engineer tested the walls and showed me that there was actually water coming through the walls at some areas and this was part of the problem. We ended up having the walls epoxy injected along with a drainage ...
John G - Alexandria, VA 22312
Waterproofing in Alexandria, VA
Our realtor recommended Deska. We had an engineering inspection done and we needed to seal the cracks with epoxy and install a drain system/pump. They offered a lifetime warranty on the drain system so I am one happy camper!
Matthew N - Alexandria, VA 22312