Wet carpet after a water leak

Start with where the water came from

The source decides whether wet carpet can be saved at all. The restoration industry’s IICRC standard sorts water by contamination. People often shorten its categories to clean, gray and black water:

• Clean water comes from a source that isn’t a health concern, like a broken supply line or a sink that overflowed with nothing in it.
• Gray water carries some contamination, like discharge from a washer or dishwasher.
• Black water includes sewage and anything that backed up from a drain beyond its trap. The IICRC also counts rising water from rivers or streams in this group.

The IICRC notes that time and temperature can change a water’s category, so clean water that sits in carpet for days may not count as clean anymore. If you’re not sure what you’re dealing with, our first-hour guide walks through safety and stopping the water first.

What the EPA says about wet carpet

For clean-water damage, the EPA’s cleanup table says to dry carpet and backing within 24 to 48 hours. It lists three steps, in this order:

1. Remove water with a water extraction vacuum.
2. Reduce humidity in the room with a dehumidifier.
3. Speed up drying with fans.

A footnote adds the part people miss: “The subfloor under the carpet or other flooring material must also be cleaned and dried.”

The EPA also calls 48 hours a guideline. Mold may grow even when materials dry in time, and it won’t always grow after 48 hours. If carpet has been wet longer or shows mold, the EPA points to its mold cleanup guidelines instead.

Carpet, pad and floor are three different problems

The carpet

The face fibers and the backing are what you see. Carpet soaked by clean water can often be extracted and dried in place, as long as drying starts quickly. Carpet whose backing has started to separate from the face, called delamination, usually can’t be relaid.

The pad

The foam pad underneath acts like a sponge. It soaks up a lot of water and dries slowly, because the carpet covers it and the floor seals it from below. Soaked pad is usually replaced rather than dried.

The floor underneath

In most Valley homes, that’s concrete. University of Arizona Cooperative Extension says floating and monolithic slabs are the most common foundations in Arizona. Concrete takes on water and gives it back slowly. For concrete, the EPA’s table says to extract the water and speed up drying with dehumidifiers, fans or heaters.

Upstairs rooms and some other homes have wood subfloors instead. The EPA says wet wood needs moisture removed right away and dried with dehumidifiers, gentle heat and fans.

The wood tack strip along the walls gets wet too, along with the bottom of the drywall and the baseboards. The EPA lists the underside of carpets and pads among the places mold hides, so this is where a provider looks first.

Why fans alone usually aren’t enough

A box fan blowing across wet carpet dries the fibers on the surface. It does very little for the pad or the concrete underneath. And without a dehumidifier, the water it lifts stays in the room’s air and can settle into drywall and furniture.

That’s why the EPA lists extraction first and fans last. Pulling water out of the carpet and pad removes much more of it, much sooner, than waiting for it to evaporate. Many providers use extraction tools that press down on the carpet as they pull water out of the pad.

Depending on the job, a provider may also:

• Lift the carpet off the tack strip, pull the wet pad and blow air underneath the carpet so both sides dry.
• Run dehumidifiers sized for the space, day and night.
• Take readings of the floor, baseboards and lower walls, not just the carpet.

Fans can also make things worse. The EPA says not to use them before you know the water is clean. Joint EPA and CDC guidance says not to use fans once mold has started, because they may spread it. For more on drying equipment, see structural drying.

When the carpet usually has to go

Not every wet carpet is a loss. These situations usually are:

• Sewage or a drain backup. The CDC says to throw away anything you can’t clean or dry quickly, and lists carpeting, carpet padding and rugs. The EPA advises calling a professional experienced with contaminated water. See sewage backup cleanup.
• Floodwater from outside. Joint EPA and CDC guidance says to throw away anything wet with floodwater that can’t be cleaned and dried completely within 24 to 48 hours.
• Carpet that couldn’t be dried right away. The CDC says to remove or replace carpets that have been soaked and can’t be dried right away.
• Moldy carpet. The EPA says porous materials such as carpet may have to be thrown away if they become moldy.
• Delaminated or shrunken carpet, which usually won’t lie flat again.

The pad is the easy call. Once soaked, it’s almost always replaced, even when the carpet stays.

What you can do right now

• Stop the water at the fixture’s valve or the main shut-off, and stay out of water near outlets or cords. The leak itself is a plumber’s or appliance technician’s job.
• Move furniture off the wet carpet. If something is too heavy, set the legs on plastic or blocks so wood stain and rust don’t bleed into the fibers.
• Pick up small rugs and anything made of paper or fabric.
• Use a wet/dry vacuum for a small amount of clean water, keeping the cord out of the water. Joint EPA and CDC guidance mentions wet vacuums for floors and carpets. Never use a regular household vacuum, and don’t vacuum sewage.
• Leave older flooring alone. If there’s old vinyl tile or sheet flooring under the carpet, the EPA says vinyl floor tiles, the backing on vinyl sheet flooring and some adhesives may contain asbestos, and testing is the only way to know.

If water is still standing, see emergency water extraction.

What to document for insurance

Arizona’s Department of Insurance and Financial Institutions (DIFI) advises taking pictures before any mitigation company, plumber or restoration contractor shows up. For wet carpet, that means:

• Wide shots of every wet room, then close-ups of the wet edge and the source.
• The carpet’s condition: stains, the line where the water reached, and any spots where the backing is coming loose.
• Furniture and belongings that sat on the wet carpet.
• The time you found the water.

Then keep the record going:

• Ask before anything leaves the house. The Insurance Information Institute advises keeping damaged items until the adjuster has visited. Ask your insurer whether they want pieces of carpet and pad kept as samples.
• Make a list of damaged items, with a copy for the adjuster, as the Insurance Information Institute suggests.
• Keep receipts for anything you buy or pay for.
• Keep a drying log. DIFI suggests recording times, dates, names of technicians and the equipment they bring. Ask the provider for daily moisture readings of the carpet area and the floor underneath.

Policies differ on what they cover, and a leak that seeped over time is often treated differently from a sudden one. Our insurance guide covers the general rules, but your own policy decides.

Questions to ask the provider

• Is the pad coming out, and will the carpet be dried in place or removed?
• What do the readings show on the floor under the pad?
• Which baseboards and lower walls are wet?
• Can I get the readings and photos in writing for my insurer?
• Do you relay or replace carpet, or only handle the water removal and drying?

Before work starts, look up the contractor’s license with the Arizona Registrar of Contractors and get the scope of work in writing.