How fast does standing water need to come out?
Standing water should come out as soon as it is safe to reach, because wet materials start to lose their strength and can begin to grow mold within a short time. The exact timing depends on the material, the temperature and the air moving across it, so the technician sets the pace on site.
Water soaks into the materials beneath it at different speeds. Carpet and pad hold water like a sponge and carry it sideways under the floor. Drywall wicks water up the wall and, once saturated, loses the fiber that holds its shape. Hardwood and laminate cup and swell when water sits under them, and the swelling can stay after the floor dries.
This is why extraction starts first, and why the crew does not wait for a full assessment before the water is off the floor. The assessment comes next, and it is quicker and more accurate on a floor that is no longer under water.
Should I pump or mop the water up myself?
Small amounts of clean water can be soaked up with towels, but anything that covers a floor or reaches a wall should be left to a technician. A household vacuum is not built for water, and mopping pushes moisture into seams and under baseboards where it is hardest to find later.
Towels are useful in the first minute, when they catch water at the edge of a spill and keep it from reaching a wall. Past that point they add weight to the floor and hold moisture against the surface. A household vacuum used in water can fail or shock whoever is holding it, and that is a reason to keep it away from any standing water.
The tools a technician brings are built to pull water from carpet and hard surfaces and to be cleaned and checked between rooms. What matters to you is not the tool but the outcome: the water is out, the wet materials are found and the drying is measured.
Why is the water removed before the drying equipment goes in?
Drying equipment removes moisture from materials. It cannot clear a pool of standing water, and running a dehumidifier over a flooded floor only adds to the load on the machine and the humidity in the room. Standing water comes out first, so the structural drying that follows works on the materials rather than on the pool.
The order matters because each piece of equipment is sized for the moisture it is asked to move. A pool of water on a floor is a different problem from damp materials, and pumping it first gives the drying a clean start that can be measured.
Some crews set up equipment while extraction is still going on. The technician decides from the state of the floor which order is quicker for that job, and explains the choice before the work begins.
What if the water came in from outside?
Water that enters from outside is handled as storm water first. The technician checks the doors, window wells, garage thresholds and any low gap at grade, removes the water and the debris it carried in, and notes where it came through so the entry can be closed.
A storm can leave mud on the floor and a clear line on the walls above it. The mud is removed before drying, because it holds moisture and leaves a residue that can hide damage underneath. Photographs of the entry point and of the water line should be taken before the cleanup changes the scene.
Your insurer may ask how the water got in. The technician can describe the entry in the job log, which is the same record you keep for your claim, but the policy and the insurer decide what is covered.