Basement Waterproofing and Crawl Space Repair in Annandale, VA

August 22, 2022 | Annandale, VA

Install french drain on left side of town home from steps down along rear fence to drain box just outside of rear garden. Includes installation of corrugated PVC pipe, geotextile fabric and backfill. On right front of home install PVC downspout adapter to existing drain line.

November 18, 2021 | Annandale, VA

Abandon and seal existing drain line and install new square drain box in walkout floor. Includes atrium drain cover and serviceable box. To provide redundancy in the event of sediment clogging SES will install a drain grate in front of the doorway. Run both lines to FastSump pump with liner to right of rear doorway at rear wall and demo existing clay sump pit. Includes check valve, high water alarm. Run discharge along rear wall to right side wall and discharge out into right side yard, 7-8 feet into drain box in soil. To prevent issues in the event of a power failure a battery backup system with heavy duty inverter will be installed. Customer understands that regular inspection and maintenance of drain box is needed to ensure water will flow freely.

July 23, 2021 | Annandale, VA

Pre-treat all three crawlspaces for rodent activity, return two weeks later and remove all old soiled insulation to include old vapor barrier. Remove all visible rodent droppings throughout crawlspaces. Disinfect and smell treat inside of all crawlspaces to kill any bacteria, parasites, or hantavirus. Spray foam rim joist in all three crawlspaces to reduce humidity, spray foam interior walls of crawlspace connected to utility room at kitchen due to being confined for proper installation. Install r11 foam board insulation with vapor barrier to other two crawlspaces on walls of interior and seam tape. Plate foundation vents from interior and air seal, frame and install exterior composite entry hatches to both crawlspaces. Install drain mat to floor of crawlspaces to reduce trapping moisture under vapor barrier. Install 12 mill vapor barrier to floors of crawlspaces and run up walls of interior to include overlapping vapor barrier and seam taping to floors and attaching and seam tape to walls. Hook up electrical for designated source for dehumidifier, install a Santa Fe subcompact dehumidifier to draw moisture from crawlspaces, Install condensate pump and runoff line to extract water that is collected from dehumidifier to outside of exterior. Treat exterior of home and crawlspaces for three months for rodents as this is a one time per month treatment.

April 21, 2021 | Annandale, VA

Demo walls 24 inches up from floor, demo floor. Install GrateDrain system in V shaped alcove with FastSump, liner and high water alarm. Cover floor and finish with high strength concrete. Discharge out rear left corner 10 LF into drain box flush in soil. Install dedicated electrical outlet by a licensed electrician. Includes installation from panel in garage out along exterior into structure. Some drywall may need to be removed to perform electrical installation. Customer will be responsible for replacement when complete. Scrape/wire brush and remove efflorescence in area where drywall was removed at right front corner. Apply masonry water proofing paint to area. 

September 08, 2020 | Annandale, VA

Remove existing debris, vapor retarder, raccoon feces and insulation and dispose.  Include removal of approximately 4 damaged insulated flex duct supply lines for HVAC system.  Once cleaned.  apply/fog crawl space with disinfectant/pesticide spray (Steri Fab) to kill adult insects, bacteria and viruses that may be present from raccoons and their feces. 

Reinspect crawlspace during procedure to assess additional damage(if any) from raccoons etc. Crawl space is approximately 24" in height and part of crawl space was physically inaccessible during initial inspection.  Access to this area may be required from the interior to bypass hard duct which is blocking access to approx. 1/2 of the crawlspace and was only visually accessible.