A water damage drying log is the day-by-day record of a mitigation job: the dry standard each wet material has to reach, every moisture reading taken against it, the temperature and humidity inside and outside, the equipment running in each room, and the date it was all dry and the equipment came out. It is the document that justifies the equipment days on the invoice and shows the job was finished, not just stopped. This log keeps each of those as its own dated list, so the story reads in order from the first visit to the last, and it raises a finding when a reading is still wet on day four or later for a reason that needs action. You can fill it in here and download a finished PDF without creating an account.
Set the dry standard first
Before the second visit, decide what "dry" means for each material on this job. The usual way is to take a reading from the same material in an unaffected part of the building — drywall in a dry room, subfloor at the far end of the house — with the same meter on the same scale. That number is the goal. Where there is no unaffected material to compare against, write down the target you are using and where it came from.
Every reading on the log is then judged against that standard, not against a feeling that the wall looks dry. It is what lets you, the adjuster and the customer agree when the job is finished.
Readings every visit, in the same places
Take each reading in the same spot every visit — mark it on the wall with a small number, or on a moisture map — so day one and day three are comparing like with like. Each row on the log is one reading: the date, the drying day, the room, the material, the exact spot, the reading as the meter showed it, and whether it has reached the standard.
Most materials in a well-set-up room come down steadily over three to four days. If a reading is still above the standard on day four or later, the log asks why. Dense materials such as hardwood and concrete can simply take longer; a stalled reading can also mean hidden water, a new leak, too little airflow, or a material that will not dry in place and needs to come out. The answers that need action become findings on the report.
Atmospheric readings show the equipment is working
Moisture readings say how wet the materials are. Atmospheric readings say whether the air can take more water out of them. Record temperature and relative humidity outside, in an unaffected area, in the affected area, and at each dehumidifier's outlet, and type in the grains per pound (GPP) from your meter or a chart.
The pattern you want is drier air in the affected area than outside, and much drier air leaving the dehumidifier than entering it. If the affected-area GPP is not dropping, the dehumidifiers are undersized, the area is not closed off, or outside air is getting in. The log does not calculate anything; it keeps the numbers side by side so the trend is easy to read.
Equipment changes and the close-out
Every time equipment goes in, moves or comes out, add a row: the date, the room, how many air movers, dehumidifiers and air scrubbers are now running, and what changed. Those rows are what an adjuster adds up to check equipment days, so record removals as carefully as placements.
Close the job when every material is at its dry standard: note the final reading date, the date the equipment came out, the total drying days, final photos of the meter on the material, and anything that still needs rebuild work. Speak while you walk, and the document writes itself: say "day three, kitchen south wall marker two, drywall reads 14, dry standard 10, still drying" and the reading lands in its own row with the date.
Common questions
What is a drying log in water damage restoration?
It is the daily record of a mitigation job from the first monitoring visit to the day the equipment is removed: moisture readings against a dry standard, atmospheric readings, the equipment on site and every change to it, and notes from each visit. It shows that drying was monitored and that materials reached their goal before the job was closed.
What is a dry standard?
The reading a material has to reach to count as dry. It is usually taken from the same material in an unaffected area, with the same meter and scale, so it reflects what normal looks like in that building. Some jobs use an agreed target instead; either way, write down what you used.
What is GPP, and do I have to calculate it?
Grains per pound is a measure of how much water vapor is actually in the air, which lets you compare air at different temperatures. Many thermo-hygrometers show it directly; otherwise it comes from a psychrometric chart. This log does not calculate it — type in the value you read.
How often should moisture readings be taken?
Usually once a day, at roughly the same time, in the same marked locations, until every material reaches its dry standard. Equipment is adjusted based on what the readings show, and each change is logged.
How long should drying take?
A typical room with drywall, carpet and wood framing often dries in three to four days with the right equipment. Dense materials, wet cavities and cold or humid weather take longer. That is why the log asks for a reason when a reading is still above the standard on day four or later.
Can I use one log for the whole job?
Yes. Each list — readings, air, equipment and visit notes — takes a new dated row every visit, so one log covers the whole job and reads in order. The first-visit assessment of the source, category, class and safety is kept on its own form.