How does structural drying differ from fans and a dehumidifier bought at a store?
A professional drying plan measures the moisture in each material and sets equipment to suit the room. A fan or a home dehumidifier moves air but does not show whether the materials inside the walls and floor are dry. The readings decide when the job is done.
A household fan blows across the surface of a wet floor and dries the surface quickly, which can hide water still sitting underneath. The moisture is in the subfloor and the cavity, and the surface reads dry while the inside stays wet. Structural drying measures what is under the surface, so that gap is closed.
Equipment also has to be placed to match the building. Air that is blown the wrong way can push moisture into a dry room, and a dehumidifier that is too small can run all day without changing the readings. The technician sets the layout from the first readings.
What moves the price of drying work?
Drying is priced by the number of rooms, the materials that are wet, the amount of equipment needed and the number of days it runs. The price is explained and approved before work starts, and this page gives no figure.
A room with wet drywall and a wet subfloor needs more equipment and more days than a room where only the surface was wet. The technician records the materials that tested high, and those are the items that drive the equipment count and the length of the job.
Access also moves the scope. A wall that can be opened from the basement dries faster than one that has to be opened from the room above, and a cavity that is closed off needs more time. Those points are part of the plan the technician gives you on site.
Why does drying run across several visits?
Moisture moves out of dense materials slowly, and the air in the room has to be lowered in humidity before the materials can give up more water. Drying runs for as long as the readings show that moisture is still leaving the materials.
Drywall, wood and insulation each hold water in a different way. Wood and framing can take longer than drywall to come back to a dry reading, and insulation may not dry at all, which is why it is often removed.
The crew does not set a fixed number of days at the start. It sets a target reading and checks the progress each visit. When the target is reached, the room is called dry, and the equipment comes out.
Can I run the drying equipment myself after the crew leaves?
The equipment should only be run as the technician set it, with the same doors and vents open or closed. Do not move a dehumidifier or an air mover without asking the crew, and do not plug equipment into a cord that is wet or overloaded.
Keep the room closed off from the rest of the house if the technician asks you to. Moist air that leaves a drying room can raise humidity in other rooms, and that can cause problems on the walls and windows elsewhere in the house.
Empty the dehumidifier's water container on the schedule the technician gives you, if the unit does not drain on its own. A full container stops the unit, and the drying stops with it.
What does the moisture log tell me?
The moisture log records the readings for each room and material, the date of each visit and the equipment in place. It shows whether the drying is working and is the document an adjuster will ask for first.
A useful log shows a falling pattern over several days. A flat line means something is still feeding moisture, and the crew will look for the source before continuing. Each row in the log says where the reading was taken, so the same spot can be checked again.
Keep the log with your photographs and receipts. It is a record of what the crew found and when, and it helps any later contractor understand the history of the room.