House Washing & Pressure Washing in Lookout Mountain, TN
House washing on Lookout Mountain, done at low pressure
House washing in Lookout Mountain, TN is soft washing first at Chattanooga Washing Co., because the brick, stone and painted wood on these homes should not meet a high-pressure tip. We handle house soft washing, roof cleaning on asphalt, slate and tile, brick, paver and stone cleaning, driveway and concrete cleaning, gutter cleaning, window washing, and deck and fence cleaning. Our detergents are biodegradable and low-odor, and every house wash carries the 12-month mold and mildew free guarantee.
Lookout Mountain is a town of 2,058 people (2020 census) on 1.3 square miles at the north end of the mountain, about 1,850 feet up and roughly 1,170 feet above downtown. It has the oldest housing on our route: the median home was built in 1952, and 36.6% of houses date from 1939 or earlier.
What we find on Lookout Mountain houses
- 36.6% of homes built in 1939 or earlier, the oldest stock we wash
- Sandstone walls, steps and garden edging cut from the mountain's own caprock
- Lichen and moss on shaded brow lots under mature hardwoods
- 94.5% owner-occupied, so most visits cover the whole property
- Hamilton County water quality rules in force inside the town
How much pressure is safe on historic brick and sandstone?
For historic brick the working limit is 600 psi or less, and sandstone deserves even less. Chattanooga's St. Elmo historic guidelines, written for the neighbourhood at the foot of the mountain, say never go above 600 psi on historic brick and never sandblast. We clean both at low pressure and let detergent do the work.
Most professional machines run at about 4,000 PSI. That is the right tool for a parking deck and the wrong one for a 1920s brick house. Pressure that high scours the fired face off soft brick, opens mortar joints and leaves lighter stripes that never wash out. On a house this old, the damage shows for decades, and no repointing fully hides it.
Sandstone is the bigger worry. It is the mountain's own rock (Sunset Rock is mainly sandstone), and plenty of local walls, steps and chimneys are built from it. Sandstone is sand grains held together by natural cement, and a narrow jet pulls the grains loose. So on stone we pre-wet, apply a mild mix, let it dwell and rinse at garden-hose pressure. A stubborn stain gets a second application, never more pressure.
Surfaces we clean on Lookout Mountain properties
With a median home value of $855,300 and 94.5% of homes owner-occupied, most jobs here cover the whole property rather than one dirty wall. These are the surfaces we clean most often in town.
Brick and stucco house washing
Brick walls and stucco get a house wash mix of 0.5-2% sodium hypochlorite with a surfactant so it clings, then a low-pressure rinse. Mildew on north walls and green algae near downspouts come off without touching the mortar. House washing starts at $249, and larger homes here are priced by size after a free estimate.
Sandstone walls and stone steps
Garden walls, retaining walls and front steps of local sandstone go dark with algae and lichen in the shade. We use a 2-4% mix suited to stone, rinse gently, and repeat rather than raise pressure. Lichen is a fungus partnered with algae, so it needs time on the surface to die before it rinses away.
Stone terraces and pool decks
Flagstone terraces, paths and concrete pool decks pick up tannin stains from leaves and black mildew. Concrete gets a surface cleaner; flagstone and pavers get a lower setting and a wide 40-degree tip. HomeAdvisor's 2026 range for patios and walkways is $0.20-$0.40 per square foot.
Painted wood porches and trim
Clapboard, porch ceilings, columns and railings on pre-war houses carry many coats of paint. We soft wash them by hand at garden-hose pressure, so chalk and mildew rinse away and sound paint stays put. Peeling areas are pointed out before we start, since we clean and do not paint.
Rust stains under iron railings
Old iron railings and gates leave orange streaks on the stone and concrete below them. Rust ignores bleach, so we treat it with an oxalic acid based remover, which works because oxalic acid binds iron, then rinse at low pressure. Rust removal is quoted as a separate line.
Carriage houses and garages
Detached garages, studios and carriage houses often sit deeper in the trees than the main house and grow more mildew. We wash them on the same visit with the same low-pressure method, including garage doors, shutters and the stone or brick foundation walls.
Lichen, shade and scheduling on the mountain
There is no NOAA weather station on the mountain, so the closest figures come from the airport in the valley: 55 inches of rain a year and 71.9% average humidity. Up on the brow, cloud and tall trees keep roofs and stone damp longer than that. ARMA notes that roof algae spreads most in warm, humid regions, and the shaded lots here are a textbook case.
Moss and lichen are the slow problem. Moss grows as dense green mats on damp, shady surfaces, and about 90% of known lichens pair a fungus with an algal partner. Both hold water against shingles and stone. A soft wash with a 15-20 minute dwell kills them, and the dead growth keeps loosening with each rain over the following weeks. For roof-specific detail, see our roof cleaning page.
Getting the rig up the mountain is part of the plan. We come up Ochs Highway or Scenic Highway and keep the trailer on the street where driveways are narrow or steep. Rinse water from homes soaks into lawns and beds. Lookout Mountain is part of the Hamilton County Water Quality Program, which leaves commercial wash water off its allowed list, so work at a business or institution includes drain protection. Across the valley, we also wash homes on Signal Mountain.
Pressure washing and roof cleaning we offer on Lookout Mountain
Roof soft washing
Asphalt shingles, clay tile and slate all get a low-pressure treatment with no brushes and no walking on fragile tiles where we can avoid it. ARMA bars power washers on shingles, and Fixr suggests cleaning a tile roof about once a year. Roof cleaning starts at $399.
Gutter cleaning
Mature hardwoods on the brow fill gutters fast, and overflowing runs stain stone below. We hand-clean, flush downspouts and brighten gutter faces where black streaks have formed. Gutter cleaning starts at $149, and on heavily wooded lots twice a year is the minimum.
Window washing
Older homes on the mountain often keep original sashes and wavy glass, which get a hand detail rather than a direct spray. We clean exterior glass, frames and screens, and most owners book windows on the same day as the house wash.
Driveway and concrete cleaning
Steep driveways and parking courts under trees grow slick green mildew. A surface cleaner lifts it evenly without stripes, and leaf tannin stains fade in the same pass. Driveway cleaning starts at $149 for a two-car slab, with larger courts priced by the square foot.
Deck and fence cleaning
Wood decks, pergolas and fences on shaded lots turn grey and green. We soft wash and rinse them gently so the wood does not fur. We clean decks and fences only and do not stain or seal, so the wood is ready for your finisher afterwards.
Book a house wash on Lookout Mountain
Commercial Pressure Washing
from $0.10 per sq ft
Building soft washing, sidewalks, parking garages, dumpster pads, fleets and graffiti removal for Chattanooga businesses and HOAs.
See details: Commercial Pressure WashingDriveway Cleaning
from $149 per driveway
Surface-cleaner pressure washing for concrete driveways, walkways and patios, with oil, rust and red clay stain treatment.
See details: Driveway CleaningGutter Cleaning
from $149 per home
Hand clean-outs, downspout flushing and gutter face brightening that takes the black tiger stripes off aluminum gutters.
See details: Gutter CleaningHouse Washing
from $249 per home
Low-pressure soft wash that kills algae, mildew and pollen film on vinyl, brick, stucco and fiber cement siding.
See details: House WashingRoof Cleaning
from $399 per roof
No-pressure roof soft washing that kills Gloeocapsa magma, moss and lichen on asphalt shingle, metal and tile roofs.
See details: Roof Cleaning
Lookout Mountain house washing FAQ
How much does house washing cost on Lookout Mountain?
House washing on Lookout Mountain starts at $249, and most homes in town land toward the top of our $249 to $449 range or above it, because houses here are larger and often have stone, porches and outbuildings. We confirm a final price after a free estimate, before any work begins.
Can sandstone be cleaned without damaging it?
Yes, with low pressure and patience. We pre-wet the stone, apply a mild 2-4% sodium hypochlorite mix for algae and lichen, let it dwell and rinse at garden-hose pressure. If a stain remains we repeat the treatment rather than raise the pressure, since a narrow jet pulls loose the grains that make up sandstone.
Do you also clean homes on the Georgia side of the mountain?
Our regular route covers Lookout Mountain, Tennessee and nearby North Georgia towns such as Chickamauga, Rossville and Fort Oglethorpe. For a home in Lookout Mountain, Georgia, send us the address and we will confirm scheduling. The method and pricing are the same on both sides of the state line.
Will the cleaning solution harm my gardens?
Our detergents are biodegradable and low-odor, and we soak beds, shrubs and lawns with clean water before and after spraying so the mix stays diluted. ARMA's roof bulletin asks for careful application around the building and nearby plants, and on planted properties we follow it on walls and stone too.
How often should an older home on the mountain be washed?
Once a year suits most shaded mountain homes, with a second visit for north walls or stone under heavy trees. Local washers recommend every 12 to 24 months across the Chattanooga area, but the shade and moisture on the brow put homes here at the shorter end of that range.