Syracuse · Masonry cleaning

Brick Cleaning and Masonry Sealing in Syracuse

Old brick in Syracuse collects soot, stains and white salt, and the right cleaning method depends on why it looks that way.

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No obligation
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Onondaga County focus
The projects and soil notes here fit Syracuse and nearby towns.
Honest timing advice
If your job belongs in spring, we say so early.

Red brick wall streaked with white salt deposits beside a bucket, brush and hand sprayer

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When masonry cleaning fits a Syracuse home

White powder on a basement or porch wallThis is usually efflorescence, salt that water carries to the surface. Cleaning it off is easy; stopping it means finding the water.
Dark staining at the base of brickSplashback, soil contact and gutter overflow stain the bottom courses of older houses and can often be cleaned.
A stone or paver surface that looks tiredWeathered stone steps, a patio or a front wall can look new again after a careful wash and, sometimes, a breathable sealer.

Quick answers

Questions about masonry cleaning in Syracuse

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Should I seal my Syracuse brick after cleaning?

Only if the wall is dry and the cause of any salts is found. A breathable sealer is the usual choice, and a coating over a wet wall can do harm.

When is it too cold to wash brick?

Water-based cleaning should only happen if the temperature will stay at or above 40 degrees until the masonry is dry, so the job often waits for spring.

Masonry cleaning in Syracuse homes

Census figures put 43.1 percent of Syracuse homes at 1939 or earlier, and masonry of that age has had decades to collect soot, soil staining and salt. The first job is diagnosis, because a wall that looks dirty and a wall that is wet are different problems.

Efflorescence is the best example. Brick industry guidance says it needs soluble salts, water and a pore structure that lets the solution reach the surface. On brick under a year old it is usually new building bloom that fades as the wall dries. White salt that shows up later generally points to water getting in, so a cleaner who only scrubs it off will see it return.

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Be careful with sealer

A coating put on before the cause is solved can trap salts, and the same guidance warns that salts crystallizing inside brick can spall its face. Ask for a breathable product, and ask what moisture checks come first. On pavers, a sealer applied over damp joints or a poorly draining base can turn cloudy, and most sealers need reapplying after some years.

Timing is a Syracuse issue. Water-based cleaning should only happen if the temperature will stay at or above 40 degrees until the masonry dries, and in a normal year the city sees 12.8 nights under 40 in October and 25 in November. Book cleaning for a warm stretch of days, or wait for spring when the forecast stops threatening a freeze. If your house is in a preservation district, ask the Landmark Preservation Board whether your cleaning method needs its review.

Basis: U.S. Census Bureau, Brick Industry Association

Here in Syracuse

In a normal Syracuse year October has 12.8 nights under 40 degrees, the limit for water-based masonry cleaning, so late-season cleaning needs a warm forecast.

Permit notes are on the Syracuse page.