Historic building care

Cleaning Historic Buildings: Materials, Treatments, and Care

Cleaning an older property starts with understanding the surfaces involved. Here’s what owners should know about choosing treatments, planning the work, and caring for nearby materials.

Canopy, sidewalk, and Saenger sign at the Saenger Theater in downtown Hattiesburg

Routine cleaning at a historic property

We cleaned the canopy and sidewalk at the Saenger Theater in downtown Hattiesburg, pictured above. This project shows the care that goes into everyday maintenance at an older property, with attention to the cleaned areas and the surrounding materials.

The theater at 201 Forrest Street opened in 1929 and was added to the National Register of Historic Places in 1979, according to the Saenger’s official history. Whether the job involves a sidewalk, canopy, or another exterior surface, the cleaning plan should reflect the building’s materials and existing condition.

Why older buildings need an individual plan

A historic facade may bring together original brick, repaired mortar, stone trim, painted wood, metal, and newer additions. Years of weather and maintenance give each material its own character and condition. We plan the treatment for each section so the building receives care suited to its details.

That is why our historic building cleaning service starts with the property’s materials, condition, and intended scope. We want to understand what you are seeing, which areas matter most, and whether there are concerns that should be addressed before washing.

Proper treatments start with the surface

The National Park Service’s masonry-cleaning guidance recommends assessing materials and soiling, testing proposed methods, and choosing the gentlest effective approach. A discreet test area should be evaluated after drying before treatment proceeds across a larger area.

For a property owner, that means understanding how the proposed cleaner and rinse method fit the building. Dirt, biological growth, and other staining may call for different responses. Compatible products, controlled application, and a suitable rinse method work together to care for the surface and nearby finishes.

Care around aging mortar and architectural details

Loose joints, cracked masonry, vulnerable openings, and failing finishes deserve attention before water is introduced. Controlled application and rinsing help limit unnecessary exposure, while protection for surrounding glass, metal, paint, and landscaping belongs in the work plan.

The Secretary of the Interior’s preservation standards emphasize retaining distinctive materials and craftsmanship and avoiding damaging treatments. That is a useful way to think about any older property: the brickwork, trim, and decorative features are part of what you are caring for.

Plan the work around the people using the building

A historic theater, church, storefront, or public building may remain busy while maintenance is being planned. Event calendars, business hours, deliveries, pedestrian traffic, and access to entrances all influence the schedule. Share those details early so the cleaning scope reflects how the property is actually used.

Also provide any existing preservation specifications, owner requirements, or approvals that apply to the building. Cleaning is one part of its maintenance plan, and coordinating with the people responsible for the property helps keep expectations clear.

A cleaner exterior that preserves the building’s character

Historic building cleaning refreshes surface buildup while respecting the original materials and their natural variation. We choose the gentlest effective treatment and explain the improvements to expect. Mortar repointing, water-entry repairs, and finish repairs are separate projects that can be coordinated before washing where needed.

Your written quote identifies the cleaned areas, treatment plan, and expected results. We also discuss any repair or specialist review needed before scheduling, giving you a clear plan for caring for the building.

Have an older property in Hattiesburg or South Mississippi?

If you own or manage a historic storefront, church, theater, older home, or commercial property, tell us about the building and the areas you want cleaned.

Start with the address, approximate age, a few photos if available, and any known material or moisture concerns. South Mississippi Power Washing will review the request and help determine a suitable scope. Request a quote for historic building cleaning in Hattiesburg or elsewhere in South Mississippi.

Sources and further reading

Historic building cleaning

Give your older building the care it deserves.

Tell us about the property, its condition, and the areas you want cleaned. We’ll follow up about a suitable cleaning plan and written quote.
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