Is street water safe to ignore once it has drained away?
No. Street water that drained away still leaves silt, oil and debris in the garage and at the door, and it keeps the slab edge and the wall base wet. Those residues can cause staining and mold if they are left. The space is cleaned and dried even after the water has gone.
Water that looks clear in a driveway can carry oil and grease that settle onto a concrete floor and stay there. The stain may not show until the floor is dry, and it is harder to remove after it has set, so a cleaning step is part of the job.
The wet residue at the slab edge is the most common place where moisture hides. It can stay damp for a long time, and it wicks into the bottom of the wall. The crew measures that edge before it considers the room dry.
How do you tell where the water entered?
Look for the highest mud or debris line, the lowest point of the wet floor and any damage at a door seal, a threshold or a sill. The entry is usually at the lowest opening that faces the street, and the crew confirms it from the moisture pattern on the floor and walls.
A sliding door, a garage door and a side door are the usual entries. Mud caught under a seal or behind a threshold shows where water pushed through. A tide line on the inside of a door frame shows how high the water stood outside.
Water that came through the ground, such as through a cracked slab or a gap at the foundation, shows a different pattern. It rises through the floor rather than across it, and the crew checks the slab's edge and any cracks in it.
Are garages and ground floors dried differently?
Yes. A garage is usually a concrete slab with framing and an open structure, so it dries faster than a finished room but holds moisture in the slab edge and the bottom plate. Ground-floor rooms have subfloors and carpet that can hold water much longer, so they need more equipment and more time.
Garages often have a lot of air movement through the big door, but that air can also be humid in North Florida weather. The dehumidifier is set to the outside conditions, and the garage door may be closed during the drying to keep the humidity steady.
Ground-floor rooms with carpet and a wood subfloor are dried from underneath as well as from the top. The subfloor is measured through the boards, and the carpet pad is removed where it holds water. The room is released only when the subfloor reads dry.
What moves the price of a street runoff job?
How much water entered, how far it spread, what was stored in the space, and whether the wall and subfloor are wet all decide the scope. The price is explained and approved on site before any work starts, and any change is explained first.
Stored items are a big part of the work. A garage with stored boxes, paint, cardboard or furniture holds more water and more contamination than an empty one, and the contents have to be moved, cleaned or removed before the space can dry.
The number of rooms the water reached and how many walls are affected also matter. A garage that only wets its own floor is a shorter job than one that runs water into a laundry room and the kitchen beyond it.
What should not be done with the garage while it dries?
Do not run a gas heater, a generator or any engine indoors, and do not use the garage for storage until the crew says it is dry. Do not spray or hose down the contaminated floor yourself, since that moves the residue toward the house and the drains.
Oil and fuel residue can give off fumes, and a garage with the door closed can hold them for a long time. Ventilate the space as the crew advises, and keep ignition sources away until the floor is cleaned.
Put the damaged contents out of the way, but do not throw them out until they have been photographed and listed. The record helps with any insurance file, and the crew can advise what can be kept after cleaning.