Cleaning Eaves, Soffits and Overhangs

How eaves are cleaned

Eaves and soffits are best cleaned with a soft wash: a mild solution applied from the ground with an extension wand or a low-pressure pump, a short dwell time, then a gentle rinse. A soft brush on a pole sweeps off heavy web buildup first. Pressure should stay low, because soffits are usually painted wood, plywood, vinyl or aluminum, and many have vents that let water straight into the attic.

Done right, the underside of the roofline looks bright and even, with webs and dust gone and no water pushed into vents.

It helps to clean eaves before the walls below them. Debris and dirty rinse water fall downward, so working top-down means you are not washing the same wall twice.

Why webs and egg sacs keep coming back

Spiders build under eaves because the space is sheltered from wind and rain. Exterior lights make it more attractive, since the light draws insects at night and spiders follow the food. That is why the corners near porch lights and garage lights are always the worst.

Washing removes webs and egg sacs, which makes a real visual difference. It does not keep spiders from returning. That is a pest control question, not a cleaning one. Some homeowners find that switching to warmer, yellower bulbs or turning lights off when not needed reduces how fast webs return, but expect to clean these areas periodically.

Wasp nests deserve caution

Paper wasps often build under eaves in warm months. Before any washing, walk the house and look up into corners, under gutters and around light fixtures. If you spot an active nest, point it out and keep it out of the wash zone. Spraying an active nest with water can make wasps aggressive, and someone on the ground with a long wand is still close enough to be stung.

An active nest should be handled by a pest professional first. A crew can work around it and come back to that spot later. Old, empty nests can be brushed down and washed away with the rest of the debris.

Mildew under overhangs

Eaves stay shaded and slow to dry, especially on the north side of the house and near the coast where the marine layer keeps things damp. Black or gray spotting there is usually mildew. It comes off with a soft wash solution and a few minutes of dwell time, not with pressure.

If mildew keeps returning in the same patch quickly, look for a cause. A clogged gutter overflowing at that corner, a blocked soffit vent, or a roof leak can all keep the wood wet. Fixing that does more than any cleaning will. Our post on telling mold, mildew and algae apart covers what each growth suggests.

Painted surfaces and vents

Soffit paint is often older and more fragile than wall paint because it never gets the same attention. High pressure will flake loose paint off, and sometimes that is the first time a homeowner realizes the paint was failing. Low pressure keeps sound paint intact and shows you honestly where touch-up is needed.

Soffit vents, gable vents and attic openings should never be sprayed directly. Water pushed into an attic can soak insulation. The rinse should be aimed across vents, not into them.

Look at the fascia and gutter faces at the same time. Dark streaks on the outside of gutters are a separate stain that usually needs its own cleaner, so mention them if you want them addressed.

Reaching high eaves safely

Single-story eaves can usually be reached from the ground with a brush pole and a garden hose. Two-story eaves, hillside homes with a drop on one side, and anything over a slope are a different matter. Climbing a ladder while handling a hose or pressure wand is a common way to fall, because the kickback pushes you backward.

This is one of the parts of a house wash where professional equipment matters most. Eaves are included as part of a full house wash, which runs $0.35 per square foot of exterior wall as of October 2026, and Say Wash It confirms the flat price before work starts. The instant quote on this page gives you a starting number.