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Structural drying and dehumidification in Cedar Rapids

Air movers and dehumidifiers run across wet walls and floors until moisture readings show the building is dry.

  • Cedar River flooding
  • Storm and hail damage
  • Frozen and burst pipes

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Structural Drying

Structural Drying and Dehumidification: what it covers

Quick answer

Structural drying is the controlled removal of moisture from walls, floors, framing and subfloors after water damage, using air movers and dehumidifiers set to the building's measured readings. It runs until the structure reads dry, not for a set number of hours. Cedar Rapids Water Damage Restoration sets and checks the equipment across Linn County around the clock.

Structural Drying and Dehumidification illustration for Cedar Rapids, IA

Water that has been removed from the floor is still in the building. It sits inside drywall, in the insulation, in the sill plate and in the subfloor, and it keeps evaporating into the air long after the room looks dry. Structural drying is the work of pulling that moisture out in a controlled way, so the framing and finishes can be saved where they are sound and removed where they are not.

Drying is measured, not guessed. A technician takes readings across the floor, the lower walls and the framing, notes where the moisture is highest, and sets the equipment to move air across those surfaces. The readings are taken again on each visit, and the equipment is moved or added where the numbers are still high. A fan left running in one corner does not do this work.

Call (833) 490-5225 if a wet building needs drying. The line is answered 24/7 and a crew is sent as soon as one is free. Before the equipment arrives, keep doors and closets open so the air can move, and do not close the building up or turn off the heat in a way that traps humidity inside the walls.

Service area
Cedar Rapids & Linn County
Availability
Phones answered 24/7
Warning signs

Signs you need structural drying and dehumidification

Do not plug drying equipment into an outlet that is in water or near a flooded panel. Keep dehumidifier discharge directed outside, and never run a generator inside the house. Do not stand on wet subfloor or cut into a wall without checking for wiring and pipes first. Wear a dust mask when opening cavities, because the material inside can carry mold and fine debris.

  • A room that stays humid or smells damp after the water is out
  • Walls that feel cool and soft at the bottom edge when pressed
  • Floorboards that cup, swell or lift at the seams
  • Baseboards and casing that have pulled away from the wall
  • Dark stains or a tide line that stays on the surface after cleaning
  • Insulation that feels wet or compressed when touched
Our process

How our structural drying and dehumidification visit works

  1. Take the first set of readings

    The technician measures the moisture in the floor, the walls and the framing, and records the air temperature and humidity. The readings set the starting point for the whole drying plan and show which surfaces are highest.

  2. Set air movers across the wet surfaces

    Air movers are placed so the air moves across the wet floors and walls rather than blowing into a corner. Their number and position follow the readings, and they are moved when a surface reads dry.

  3. Add dehumidification to the enclosed space

    Dehumidifiers are set to pull moisture out of the air in closed rooms, and their discharge is directed out of the space. The humidity is brought down so the wet materials can release their moisture.

  4. Open cavities where readings stay high

    Where readings stay high behind a wall or under a floor, the crew cuts small openings to let air reach the cavity and to check the framing. The openings are patched or left open for the drying stage, and the work is recorded.

  5. Return, re-read and stop only when dry

    The crew comes back to read the moisture levels, moves equipment where readings are still high, and removes equipment from surfaces that have dried. The job ends when the structure reads dry, and the final readings are written in the record.

How does a crew know when a wall or floor is dry?

A crew compares moisture readings in the wet material with readings in a known dry area of the same kind. A surface is dry when its reading matches the dry reference, not when it feels dry or looks dry, and the readings are logged for each visit.

Moisture readings are taken with a meter that measures the moisture content of the material, and the crew records the reading at the same spots on each visit. A wall can look dry at the top and still read wet near the sill plate, so the crew measures the lower edge as well.

A thermal camera helps find hidden moisture behind a surface. It shows cooler areas where water is evaporating, which tells the crew where to take a reading or where to open the wall. The camera is a guide, and the meter decides the reading.

Why does drying take several visits instead of one?

Moisture leaves a building at different rates depending on the material, the air and the depth it has reached. Dense framing and insulation hold water longer than a thin finish, so drying is checked and adjusted over several visits rather than set once and left.

The first visit sets the equipment and the starting readings. Later visits show how fast each surface is drying, and the crew moves the equipment to the places that have stayed high. Each visit is a chance to correct the plan, which is why the job cannot be closed on the first day.

A homeowner who wants to know how much longer the drying will take should ask to see the readings. The trend across the visits is a clearer answer than any number given in advance, and no drying time is promised over the phone.

Can a homeowner run a dehumidifier and fans instead?

A homeowner can run fans and a dehumidifier for minor damage, but that does not measure the moisture in the walls, floor and framing. Without readings, the surfaces that are still wet are easy to miss, and the building can stay damp inside the structure long after the room feels dry.

Equipment placed by someone who cannot read the moisture levels tends to be left in the same place for too long. The drying effort goes where the air is easiest to move, not where the water is.

If a homeowner has a dehumidifier and fans on hand, they can help keep the air moving between visits. They do not replace the readings, and they should not be used in a space where the electrical side has not been checked.

When does drying mean removing wall or floor material?

Material is removed when it cannot be dried to a safe reading, when it is soft or crumbling, or when it holds water in a place the air cannot reach. Removal is explained to the homeowner before it happens, and each opening is recorded.

Carpet pad, insulation and drywall that have soaked up water above the safe line usually come out. The crew shows the readings that led to each removal, so the decision is traceable and open to question.

Framing that is wet but sound is usually dried in place. The crew checks it for soft spots and for swelling, and it reports any wood that needs a closer look by a qualified person before it is closed up.

What moves the cost of structural drying up or down?

The size of the wet area, the number of rooms, the depth of moisture in the framing, the finishes and the number of visits move the cost. Cavity openings and access also add time. The price is explained and approved before work starts, and no figure is given on this page.

Equipment time is a large part of the cost. Air movers and dehumidifiers run for as long as the readings require, and a wide area with several rooms needs more of each, in more places, for longer.

A house with finished surfaces, tight access or hidden cavities takes longer to dry than an open space with bare framing. The estimate is set after the crew has walked the house and taken its first readings.

Options

Types and options for structural drying and dehumidification

Air movers for floors and walls

Air movers push air across a surface and are used on floors, walls and the bottom of cabinets. They work by moving the air that sits on the wet surface, which lets moisture evaporate faster. Their placement changes as surfaces dry.

Dehumidifiers for closed rooms

Dehumidifiers pull water out of the air in rooms that are closed up or hard to ventilate. They are most useful after the standing water is gone and the air is still humid. The discharge is directed outside so the moisture does not return to the house.

Cavity and subfloor drying

Walls and subfloors that hold water need air moved through them, which is why the crew sometimes opens a cavity or a floor section. Drying through the cavity reaches moisture the surface cannot, and it lets the framing reach a dry reading.

Drying in a finished space

A finished room with paneling, tile or hardwood is dried with the finishes in mind. The crew sets equipment so the air moves without warping the flooring, and it checks each finish for cupping, lifting and staining as the readings change.

Linn County

Why structural drying and dehumidification is different in Eastern Iowa

Cedar Rapids houses that have taken river or rain water are dried to readings in the same way. The city's flood facts, including the 2008 crest of 31.12 feet, explain why the water in a house can sit in the framing for longer than a homeowner expects, and why readings are the only sound guide to when it is gone.

The City of Cedar Rapids says the 2008 flood water reached about 10 square miles, or 14 percent of the city. Drying work after a flood in the city is measured against the building in front of the crew, not against a general timetable, and the readings are the record the homeowner can keep.

A homeowner who has questions about permits for repairs after drying should ask the City of Cedar Rapids building and floodplain office. The drying crew can say what it has removed and what has been dried, but it does not decide what the city allows on the lot.

Still stuck? We pick up 24/7.

If it's an emergency, call now. For non-urgent structural drying and dehumidification, send the form and we'll call you back.

Related

Mold After Flood Water

Mold in flood-wet walls and floors removed once the structure is dry, not covered over.

Guides

Read before you book

Cedar River Flood Water: What to Do First in Iowa

The first steps after Cedar River flood water reaches a home are to keep people out of the water, cut power to the wet area only if it can be done safely, and get standing water out before drying begins.

Drying Flood-Wet Walls and Floors in Cedar Rapids

Flood-wet walls and floors are dried in order: the standing water comes out first, then the moisture is measured, the material that cannot be dried is removed, and the structure is dried with air movers and dehumidifiers until the readings show it is dry.

Hiring a Water Damage Contractor in Iowa

Hire a water damage contractor on a written scope, with readings, a written estimate, a stated set of assumptions and a clear plan for the insurer's documents.

FAQ

Structural Drying and Dehumidification FAQs

How long does structural drying take?

The time depends on how much water came in, how deep it reached, what materials it touched and how the building holds moisture. The crew sets the plan from daily readings and does not finish until the structure reads dry. No fixed number of days is promised on the phone.

Why does my floor still feel damp after the equipment has been running?

Moisture can stay in the subfloor and framing after the surface has dried, and the readings tell you more than the feel does. Ask the crew to show the readings for that floor. If the floor reads wet, the equipment stays until the reading falls.

Should I keep the heat on or turn it off while drying?

Ask the crew before you change the heat. Heating the air can help the drying in some rooms, but closing the building up and letting humidity build inside the walls can make things worse. The crew sets the approach that fits the house and the readings.

Can you dry the walls without cutting them open?

Sometimes. Air movers and dehumidifiers can dry a surface that is wet only at the top. Where the readings stay high inside the wall, an opening is the only way to get air into the cavity and to check the framing. The crew explains each opening before it is made.

What if mold appears during drying?

Mold that starts in a wet wall or floor is removed once the structure is dry, and the crew reports where it was seen. Keep the area ventilated, wear a mask and avoid disturbing the growth yourself. The mold page describes the next steps.

Does the equipment need to stay in the house all the time?

The equipment runs as long as the readings require, and it is moved as surfaces dry. The crew may leave it running overnight where the readings call for it, but a fan left in one corner without readings is not a drying plan.

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