House Washing in Harper Woods
Most house washes in Harper Woods are masonry jobs. The 1940s and 1950s build-out left block after block of solid brick colonials and brick bungalows, and brick holds gray atmospheric film in its pores instead of on its surface. Chemistry and dwell time move that film. Pressure does not.
A house wash here is mostly a masonry job with wood around the edges. That build-out left original mortar, painted window frames, wood soffits and trim, and on a share of the houses a later re-side in vinyl. One elevation can carry all four materials, so the mix changes as the crew moves around the house. Brick and mortar get the mildest solution and rinse-level pressure, painted wood gets a lighter mix and hand attention at the seals, and vinyl takes a standard soft-wash mix held low on the wall so nothing drives in behind the laps.
What comes off is two different problems. The first is gray atmospheric film, the slow deposit of exhaust and road grit that settles on brick within a few hundred feet of Harper Ave, 8 Mile Rd and the I-94 lanes through the eastern portion of the city. It builds so gradually that nobody sees it until one house on the block gets washed. The second is algae, which grows on shaded north and east walls under the street canopy and feeds on humidity that east winds carry in from Lake St. Clair. Film sits in the pores of the brick. Algae roots into them. Both need dwell time, not force.
Lot spacing decides how the day runs. On this compact grid a wall we are spraying is often a few feet from a neighbor's windows, shrubs and painted trim, so downwind surfaces get wet down before any solution goes up and rinsed again after. Second-story eaves on a two-story colonial are reached from the ground with the right equipment, which keeps ladders off the gutters and off the brick. House washing starts at $349, the drive from our shop runs about 22 minutes, and a written quote comes back inside a day.
Working a Brick Colonial From the Ground Up
The crew walks the property first, noting materials, paint that is already failing, open window seals and anything that has to stay dry. Plantings and the downwind side of the lot get soaked before anything else happens. Solution goes on from the ground at low pressure and dwells while it kills growth and loosens the film in the pores. Then a rinse at garden-hose pressure carries it down and off, worked top to bottom so nothing runs over clean brick. Mortar lines get a second look, painted frames and porch rails get hand work, and the steps and garage door are part of the price. Two to three hours is typical.
How These Walls Get Damaged
High pressure on old mortar. A tight fan held close carves out joints that have been sound since the 1950s, and the sand it removes does not go back. Porous brick and block also take water in when it is driven at them, then hold it for weeks and push the salts back out as a white haze. On painted soffits and frames the same pressure lifts paint at the edges and leaves it peeling by spring. The other failure is quieter: a rinse-only wash that looks clean in June and is green again in September, because the growth was cut, not killed.
Timing It Right
Any month without a freeze will work, and the heaviest stretch runs April into June, when winter film comes off ahead of graduation parties in both the Harper Woods School District and the Grosse Pointe Public School System portion of the city. A second wave books in September, once the trees have stopped dropping pollen and before the leaves come down. Mid-July is the quietest week to pick if you want your choice of dates.
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House Washing in Harper Woods: FAQs
What does a house wash cost in Harper Woods?
Pricing opens at $349 on a typical two-story. Square footage and the amount of film on the brick move it from there, and brick and vinyl price the same way. Putting the driveway or the gutters on the same appointment costs less than a second trip out, and the quote breaks out each surface so you can decide line by line.
Will washing hurt the mortar on a 1950s brick house?
Not at the pressure we use. Solution does the lifting and the rinse stays near what a garden hose delivers, which moves film out of the pores without taking sand out of the joints. Where a joint is already crumbling or a brick face is spalling, we point it out before starting, because washing cannot fix masonry that needs tuckpointing.
How do you keep solution off my neighbor's house?
Planning and water. On lots this close together the downwind elevation, the fence line and any shrubs on the property line get pre-wet, and we hold the application low and tight to the wall instead of spraying into open air. If the wind is wrong for one side of the house, we move to another elevation and come back to it later in the day.
Is the gray on my brick dirt, or has the brick faded?
On these houses it is almost always deposit rather than a change in the brick itself. Decades of exhaust and road grit settle into the pores and dull the color evenly, which is why the difference shows up so sharply once one wall is cleaned. We test a small area during the estimate so you can see the real color before booking.
More in Harper Woods
Deeper reading: The Black Film on Homes Near Busy Roads, Explained and How Much Does It Cost to Power Wash a House in Michigan?.
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