soft wash dwell time · Moreland, GA

soft wash dwell time in Moreland

In Moreland, this comes up on small historic houses set close to large trees. Shade keeps siding damp long enough for mildew, even in a dry month. The shaded side of the house is almost always the slow side. That is normal, not a miss.

Leaf load on a small roof is the whole gutter story.

Algae and mildew are alive. Sodium hypochlorite has to stay on them long enough to kill the colony. That pause is dwell time. You will see the green and black change while we are still there, especially on vinyl and painted brick. Roofs often look better the same day and more even after the next rain, because the dead film releases.

Skipping the dwell and “blasting it off” is how wand marks happen. The growth is shaved, the surface is cut, and the roots of the problem are still in the pores. It looks cleaner for a month. If the surface was paint, stain, stucco texture, or shingle granules, force was the wrong tool.

We do not walk away and let a mix dry in the sun as a crust. Dwell, then rinse. If a section needs a second light application, that is a judgment on the stain, not a failure of the first pass. You should be able to ask which walls got a second pass and why.

The full explanation, without the town attached, is the dwell time does the work, not the nozzle article. The town does not change the chemistry. It changes the houses, the shade, and the clay.

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