Replacing floors after a hurricane or roof leak

The order matters more than the floor

After a storm, it’s natural to want the house back to normal quickly, and the floor is the most visible part of that. But a new floor laid before the roof is fixed or the slab is dry can be ruined by the same water that ruined the old one, or can trap moisture under it for months.

The sequence that protects your money looks like this:

1. Safety first. Ready.gov’s hurricane guidance warns against wading in floodwater and touching electrical equipment if it’s wet or you’re standing in water.
2. Document. Take photos of the damage and contact your insurance company, as Ready.gov advises.
3. Stop the water. A roofer repairs the roof, or the window or slider gets repaired, so no more water comes in.
4. Remove and dry. A water mitigation company removes wet materials and dries the structure.
5. Repair. Drywall, baseboards and anything else damaged get fixed.
6. New floor. This is where we come in.

We don’t do mitigation, drying, mold remediation, plumbing or roofing. Our job is the new floor on a dry, sound slab.

Rain, roof leaks and floodwater aren’t the same

Hurricanes bring water into a house in different ways, and the difference matters for the floor you choose next.

• Roof leaks and wind-driven rain. Water comes from above, through damaged shingles or tiles, a lifted soffit, a window or a slider. It’s usually rainwater, and it’s often limited to a few rooms.
• Rising water. Heavy rain can overwhelm drainage and push water in at ground level. That water may carry dirt, sewage or chemicals.
• Storm surge. The National Hurricane Center defines storm surge as an abnormal rise in water level generated by a storm, over and above the predicted tide. Along the coast and the Intracoastal it can put seawater inside a home.

The EPA’s flood cleanup guidance says to throw away materials that soak up a lot of water and can’t be cleaned and dried, and it notes mold can grow on carpet and drywall that stay wet for more than 24 hours. UF/IFAS Extension’s guide to flood-damaged carpet says carpet soaked by contaminated water should usually be discarded, and that pad is nearly impossible to clean.

How you know the slab is dry

Most homes here sit on a concrete slab. After a leak, the top may look dry in a day while the concrete below still holds water. The EPA says drying usually takes several days to weeks.

The EPA gives a simple first check: fasten the edges of a clear piece of plastic sheeting to the slab and wait about 16 hours. If moisture shows up on the plastic, it’s still too wet to replace the flooring. That’s a quick screen, not the final word.

Flooring makers publish their own moisture limits, measured with standard tests. Shaw’s SPC installation guidelines, for example, accept up to 90 percent relative humidity by the ASTM F2170 in-slab test or 8 pounds by the ASTM F1869 calcium chloride test. At the measurement, we check the slab against the limit for the product you choose. If it reads high, we wait. We’d rather reschedule than install a floor that fails.

Choosing the new floor

Many owners who lost carpet or laminate to a leak don’t want either one again. Waterproof luxury vinyl plank with a rigid SPC core doesn’t swell or soak up water, so a future roof leak, a burst supply line or a pet accident wipes up from the surface. We install wear layers of 6, 12 and 20 mil; the 20 mil layer is for kids, pets and heavy traffic, and 20-mil SPC can last 20+ years.

It’s worth being precise about what waterproof covers. It covers spills, leaks, pets, humidity and a damp slab within the maker’s limit. Standing floodwater or storm surge is a different matter. FEMA Technical Bulletin 2, which sets the rules for materials below the flood elevation in flood zones, accepts homogeneous vinyl sheets or tiles only when set in chemical-set adhesives on concrete. A floating click-plank floor isn’t on its acceptable list. If your home floods from rising water, the floor will likely need to come out again, whatever it’s made of.

Think about the edges too. After a leak, baseboards and door casings are often replaced along with the drywall. If they’re coming off anyway, it’s a good moment to plan the new floor so it runs under the new trim, which leaves a cleaner line than quarter-round added on top. At sliders to the lanai, we set the plank and transition so the track can still drain and the door still clears.

A floating plank floor does have one practical advantage after a leak: if a section is damaged, planks can often be taken up and replaced, which is harder with tile set in mortar. That’s a good reason to keep a few spare planks from your order in a closet.

Old tile that stayed down

Ceramic tile often survives a leak. If the tile is still bonded and flat, some plank makers allow installation over it, which saves the cost and mess of removal. If tiles are loose, cracked or hollow-sounding, they come out.

Many older homes here have tile and adhesive that went down decades ago. Have older tile and mastic tested before anyone tears it out. We don’t test for asbestos or abate it, and we’ll tell you if we think a test is needed before removal.

Insurance and paperwork

We can’t tell you what your policy covers, and we don’t deal with adjusters on your behalf. What we can do is give you a clear written measurement and estimate, room by room, that you can share with your insurer. If you’re a seasonal owner managing the house from out of state, we can send the same paperwork to you and to whoever is helping locally.

Condo owners should also talk to the association early. After a storm, many buildings have their own rules on who repairs what, and a new floor on an upper floor still needs the sound-rated underlayment the building requires. We help with the approval paperwork and match the rating your association requires.

What the new floor costs

Storm replacement jobs are priced like any other. We estimate $5 to $12 per square foot installed, before your discount, with a working range of $6.00 to $9.50 before and about $5.00 to $7.75 after, because the 50% off your flooring installation applies to installation labor. A 200 square foot room is roughly $1,200 to $1,900 before the discount. Use the cost calculator for your rooms.

See our water-damaged floor replacement page for the full job, and read about floors after a slab leak if the water came from a pipe. When the space is dry and repaired, book a free measurement. Most installs are completed in a single day once your materials arrive.

Sources: Ready.gov (FEMA): hurricanes · EPA: flood cleanup to protect indoor air and your health · EPA: a brief guide to mold, moisture and your home · NOAA National Hurricane Center: storm surge · FEMA Technical Bulletin 2: flood damage-resistant materials.