Great Falls' homes
Great Falls is an unincorporated community in Fairfax County, a census-designated place with no town government; the county provides services. Much of it is zoned for lots of two acres or more, so houses are spread out under heavy tree cover along winding roads, many with long driveways.
Most homes were built from the 1960s onward, and a large share are substantial custom houses from the 1980s through today, with full finished basements, wide-plank or oak hardwood on the main floors, and often a pool house, guest suite or barn. Many older homes have been expanded several times.
Unlike most of inner Fairfax County, a large part of Great Falls relies on private wells and septic systems rather than public water and sewer. Some neighborhoods do have public water. That mix shapes each season's calls.
What's wet, what can be saved and how long it will take.
Get Straight Answers NowWinter: wells, pumps and ice-storm outages
In winter, the well system is where Great Falls losses often start. The pressure tank, pump breaker and main valve are the three things to know. If a pipe bursts, switch off the well pump at its breaker, close the main valve and open a low faucet to relieve the tank. Shutting that valve won't necessarily stop what's already in the tank from draining out.
Ice storms bring down trees and power lines on wooded roads, and when the power goes, the well pump and any sump pump stop together. A house left cold during a long outage can freeze pipes in exterior walls, garages and pool houses, and the leaks appear only when the heat and the power come back.
Septic matters if water came back up a drain. That water is treated as contaminated: carpet, pad and drywall it soaked are removed, and surfaces are cleaned before drying. A generator sized for the well pump, sump pump and furnace is the single most useful precaution on a Great Falls lot.
Pump breaker, pressure tank, septic: we'll help you through it.
On a Well? Call UsSpring and summer: storms and hardwood floors
Heavy thunderstorms and humid weather are hardest on hardwood. When water reaches solid wood flooring, whether from a roof leak, a burst supply line or water tracked in through a door, the bottom of each board swells faster than the top, and the floor cups: edges rise, centers dip. In a humid summer, even the moisture from a wet basement below can cup the floor above.
Cupped floors often recover if drying starts quickly and runs slowly. The crew measures moisture in the boards and the subfloor, dries from below where possible with dehumidifiers and air moved under and across the floor, and may use panels that draw moisture from the wood. The mistake to avoid is sanding too soon: once cupped boards dry, sanded edges end up lower than the middle, called crowning.
Refinishing waits until readings in the wood match unaffected parts of the same floor. Boards that stay badly cupped or split, or were soaked by drain water, may need replacing, and the crew will tell you which.
Fall: leaves, gutters and downhill water
Great Falls' tree cover means gutters fill fast every autumn. A blocked gutter overflows along its length and drops a whole roof section's rain beside the foundation, and a downspout emptying at the wall does the same in one spot. On sloping lots, water from uphill crosses the lawn and driveway toward the house, collecting at walk-out doors and window wells.
Buried downspout lines clog with leaves and roots and send water back against the foundation. Window wells fill with leaves, then rain.
Clean gutters after the leaves fall and again in spring, check that buried lines run freely to daylight, clear window well drains, and consider a swale to steer uphill runoff around the house.
Water out first, then drying checked with a meter.
Get the Water Stopped and DriedGreat Falls service area
We connect homeowners and property managers across ZIP code 22066, from the village center at Georgetown Pike and Walker Road to the lots toward Route 7. Driveways here are often long or gated; tell us about access when you call, and we'll give you honest timing.
ZIP codes served: 22066
Communities near Great Falls
Great Falls is part of our Fairfax County & City of Fairfax service area. Neighboring pages cover McLean to the east, Vienna to the south, and Reston and Herndon to the west.
Services for Great Falls homes
- Basement Water Damage
- Sump Pump Failure Cleanup
- Frozen Pipe Burst Cleanup
- Gutter & Drainage Water Intrusion
- Hardwood Floor Water Damage
- Structural Drying & Dehumidification
Storm knocked out the power and the pit is filling?
Sump Pump Stopped? Call NowGreat Falls water damage questions
Our Great Falls house is on a well and septic. Is that unusual?
Not here. A large share of Great Falls homes rely on private wells and septic systems, while some neighborhoods have public water. Knowing which you have tells you how to stop a leak and how a drain backup will be cleaned up.
Our wide-plank floors cupped after a leak. Can they be saved?
Often. Wide planks cup more visibly, but many settle back as they dry slowly under controlled dehumidification. Don't sand or refinish until readings in the wood are back to normal; sanding early leaves the floor crowned once it dries.
Does septic change the cleanup at a Great Falls house?
Yes. Water that backed up from a toilet or drain is contaminated, so porous materials it soaked are removed and surfaces cleaned before drying. Have the septic system checked before normal use resumes.
Why does our Great Falls finished basement smell musty?
Most often it's moisture that never left: humid summer air, a damp pad over the slab, or a slow leak inside a wall. A moisture check shows whether water is hiding somewhere. A dehumidifier helps with humidity but won't dry a wet wall.
With a wooded Great Falls lot, how far should downspouts discharge?
Several feet at least, onto ground sloping away from the house. On larger sloped lots, buried lines to daylight well downhill work best. Check them every year or two for roots and silt.
The leak in our Great Falls house only showed up once it warmed up. Why?
The pipe split while frozen, and the ice held the water in until it thawed. That's why cold-snap leaks, especially after an outage, often appear a day or two later.
What about the insulation in the walls?
Wet fiberglass holds water against the framing and rarely dries in place, so it's removed once the wall is opened and replaced after the cavity reads dry.
What photos should I take in our Great Falls house?
Wide shots of each affected room first, then close-ups of the source and damage, before anything is moved. Note the date and time, and photograph any failed part.
How long does drying usually take in a large Great Falls house?
Several days for most drywall and carpet, longer for hardwood and anything over concrete, and longer again in humid weather. Readings on each visit decide when equipment comes out.