Drying out firefighting water damage in Chicago

Firefighters use water to cool burning material and stop the fire from spreading. Hose streams soak the fire room, the rooms around it and often the attic or roof space, and they may open walls and ceilings to reach hidden fire. If the building has sprinklers, they add their own water. The fire is out quickly, but the water keeps moving for hours.

Water follows gravity. It soaks into flooring, runs along joists and pipes, comes through light fixtures and ceilings below, and pools in the basement. In a two-flat or three-flat, the unit below the fire is often wetter than the unit that burned. In high-rises, water from a fire several floors up can reach units far below.

Unlike a broken pipe, firefighting water is not clean. It picks up soot, ash and debris and carries them into the materials it soaks. That changes how restoration contractors decide what can be dried and kept, and why carpet pad, insulation and soaked drywall in the fire area are usually removed rather than dried in place.

Professional drying follows the ANSI/IICRC S500 standard for water damage restoration, which covers inspection, extraction, drying, monitoring and documentation ^[2]. Combined with the S700 fire standard, it guides how a contractor handles a home that is both burned and wet.

Chicago's housing has features that make firefighting water harder to manage. Most bungalows sit over a full basement ^[4], and many two-flats and greystones have a garden unit or basement apartment below the main floors. Water from upper floors drains down into those spaces, where it soaks stored belongings, reaches the furnace and water heater, and can find its way into finished basement walls.

Plaster is common in vintage homes. It is heavy and absorbs water slowly, but it also dries slowly and can lose its grip on the lath when soaked. A ceiling that held during the fire can come down days later. Contractors check plaster ceilings carefully and may open sections to let water out rather than leave a heavy wet ceiling overhead.

Older hardwood floors, often installed over plank subfloors, can usually be dried, but they cup as they take on water and may need weeks of controlled drying before refinishing. Rushing that process, or leaving floors wet too long, both cause problems.

In multi-unit buildings, the unit below the fire often has the worst water damage. Each unit owner, tenant and the building may have separate insurance. Documentation from the first day helps sort out who handles what. Chicago's cold months add a twist: if heat to the building is off after a fire, pipes in a wet, unheated building can freeze, so restoring heat or winterizing the plumbing is part of the plan in winter.

A surface can feel dry while the material behind it is still wet. That is why moisture measurement is the backbone of professional drying. Contractors use pin and pinless moisture meters on walls, floors and framing, and thermal cameras to spot cooler, damp areas in ceilings and walls.

They take readings in unaffected parts of the house to learn what normal looks like for each material, then dry the wet areas until they match. Those readings are recorded each day. The log shows your adjuster that the house was dried properly and tells everyone when it is safe to rebuild.

If a contractor cannot show you moisture readings, ask why. Closing up walls that are still wet is one of the most common causes of mold problems after a fire.

Water and electricity are a dangerous combination. After a fire, the fire department or the utility may have shut off power or gas. Do not turn them back on yourself. Ready.gov advises having the fire department confirm utilities are safe before use ^[6], and the Illinois Department of Insurance advises having electrical equipment checked by a professional before use ^[3].

If you smell gas at any point, leave the building and call Peoples Gas and 911 from outside ^[7]. Furnaces, water heaters and boilers that sat in water need inspection before they run again, and appliances that were submerged are usually replaced.

In winter, the loss of heat in a wet building is a real risk. Ask the contractor and your plumber how the pipes will be protected if heat cannot be restored right away.

Ask how they will measure moisture and how often, what they plan to remove and why, how long they expect drying to take and how they will protect the units below or beside yours. Ask how they will coordinate with the fire cleanup so drying does not spread soot through the house.

Ask for the daily moisture log and photographs, which your insurer may request. The Illinois Department of Insurance advises getting your adjuster's agreement before you contract for repairs, and keeping all bills and receipts ^[3]. Rebuilding after drying, such as replacing drywall, flooring or electrical work, may require a Chicago building permit ^[9].

You cannot stop firefighters from using water, but you can make things easier. Keep valuables and documents off basement floors and in waterproof containers. Know where your main water shutoff is. In multi-unit buildings, make sure every unit has working smoke alarms so a fire is caught early, when less water is needed ^[10].

The decision depends on what the material is, how long it was wet and how dirty the water was. Solid wood, plaster, concrete and framing usually dry well. Carpet pad, insulation, particleboard and drywall that soaked up sooty water usually come out.

Wood floors are a judgment call: many can be dried and refinished, but floors that stayed wet too long or were already worn may be better replaced. A good contractor explains each call with moisture readings and photos, and your adjuster should see damaged items before they are thrown away ^[3].

Paper soaks up firefighting water quickly and grows mold within days. Important documents and photographs are worth acting on early. Separate wet photographs and let them air-dry face up on a clean surface, out of direct sun. Do not stack wet papers.

If there are too many wet papers to dry within a day or two, a common conservation approach is to place them in sealed bags and freeze them, which stops mold growth and buys time for professional drying later. Valuable books, family records and artwork are worth a conversation with a document restoration specialist.

Make a list of what was damaged even if you cannot save it. The Illinois Department of Insurance suggests picturing every room and listing what was in it if you do not have an inventory, including seasonal and stored items that are easy to forget ^[3].

In Chicago's two-flats, three-flats, courtyard buildings and high-rises, water from a fire in one unit almost always reaches another. The unit below may have wet ceilings, damaged floors and soaked belongings even though the fire never touched it.

Each household usually deals with its own insurer for its own belongings, while the building owner or condominium association handles the structure and common areas. Share photos and contact details with neighbors early, and let your insurer know other units were affected. A drying contractor working for the building can often dry several units at once, which is faster and more effective than separate crews working unit by unit.

Most structures dry in several days to a couple of weeks once professional equipment is running, but the range is wide. A wet carpet over a concrete slab dries quickly. Thick plaster walls, old hardwood over plank subfloors, and masonry that soaked up water from a long firefight take much longer. Cold weather slows drying, because cold air holds less moisture and dehumidifiers work less efficiently in unheated rooms.

The daily moisture log is the best guide. When readings in the wet areas match the readings taken in dry parts of the home, drying is complete. If readings stop improving, the crew should look for trapped water in a cavity, a wet layer under flooring or a plumbing leak caused by the fire.

Drying and smoke cleanup overlap. Cleaning crews usually wait until surfaces are dry enough to clean properly, but air filtration often runs alongside the drying equipment so that moving air does not spread residue.