If your carpet got wet from a flood, a burst pipe or a backed-up basement and it is still damp after 48 hours, assume mold has started. On Long Island, where half the county has a finished basement and the other half is near the water, this is the most common emergency call we get after a storm. Here is how to tell whether the carpet can be saved, what a professional actually does, and what it costs.
It depends on three things: what the water was, how long the carpet was wet, and whether the padding got wet.
The padding is the problem in almost every case. It is a sponge under the carpet; it holds water long after the surface feels dry, and mold grows in it where you cannot see. Replacing padding is cheap. Replacing carpet is not. So the goal is nearly always to dry and sanitize the carpet and replace the pad under it.
| Situation | Carpet | Padding |
|---|---|---|
| Clean water (supply pipe, appliance), dried within 48 hours | Save it | Usually save it |
| Clean water, wet more than 48 hours | Save it if no smell after cleaning | Replace the padding |
| Gray water (washer, dishwasher, sump overflow) | Save it, with antimicrobial treatment | Replace the padding |
| Black water (sewage, storm surge, bay flooding) | Replace | Replace |
| Visible mold growth or a musty smell that returns after drying | Usually replace | Replace |
We extract the remaining water with the truck-mounted unit, which pulls far more out than a shop vac, and lift the carpet to check the padding and the subfloor. Wet padding comes out. The carpet is cleaned with hot-water extraction and treated with an antimicrobial solution that kills mold and mildew spores in the fiber and backing; it is applied to the subfloor too. Then air movers and a dehumidifier run until a moisture meter says the carpet and subfloor are dry, usually one to two days. New padding goes in and the carpet is re-stretched. If the carpet still smells after all that, it is telling you it needs to go, and we will say so rather than sell you a second cleaning.
Finished basements in Levittown, East Meadow, Hicksville, Commack and Smithtown flood from sump failures and heavy rain; the carpet sits on a slab that holds cold and damp, which slows drying. South Shore homes in Freeport, Baldwin, Lindenhurst, Babylon and Bay Shore see bay and canal flooding, which is black water and means replacement. Older North Shore homes in Port Washington and Sea Cliff more often have a burst pipe or a failed water heater, which is clean water and very saveable if we get there fast.
A flooded finished basement of two rooms typically lands between $500 and $1,200 all in, versus $2,000 to $5,000 to replace the carpet. Homeowner’s insurance often covers sudden water damage; we provide the photos, moisture readings and invoice the adjuster asks for.
| Job | Typical price |
|---|---|
| Water extraction, one room | $150–$300 |
| Antimicrobial treatment | $50–$100 per room |
| Drying equipment (air movers + dehumidifier) | $75–$150 per day |
| Padding replacement and re-stretch | $1.50–$3 per sq ft |
| Full clean after drying | from $59 per room |
If the carpet was cleaned but the smell returned in a week, the padding was never replaced or the subfloor was never dried. It will not get better on its own. Call (516) 894-2901; we will tell you honestly whether it is a padding job or a replacement, and booking online takes $20 off.
If the mold is only in the padding and the carpet itself dries clean and odor-free after antimicrobial treatment, yes: replace the padding, sanitize and re-stretch the carpet. If there is visible growth on the carpet backing or the smell returns after drying, replace it.
Spores start growing within 24 to 48 hours in a damp carpet, faster in a humid Long Island basement in summer. That is why extraction and drying in the first day matters more than anything else.
Sudden events like a burst pipe or appliance failure are usually covered; groundwater and storm flooding often are not unless you have flood insurance. We provide photos, moisture readings and an itemized invoice for the claim.
No. A rental machine adds water and cannot pull it back out, and it does nothing for the padding, where the mold is. Extract, dry, replace the pad, then clean.
Two rooms typically run $500 to $1,200 for extraction, antimicrobial treatment, drying equipment, new padding and cleaning, versus $2,000 to $5,000 to replace the carpet.
Same-day appointments across Nassau and Suffolk. Carpet from $59 per room, $20 off any service when you book online, and a written price before we start.
