Basement Flooding Cleanup Annapolis MD

What is basement flooding cleanup?

Basement flooding cleanup is the process of removing water from a flooded basement, deciding what can be dried and what has to go, drying the structure, and fixing the cause so it doesn't happen again. Basements are different from upper floors because they sit below grade, so water can come in from the ground, from a failed sump pump, through a window well or up through a drain. Speed and safety both matter: standing water can hide electrical hazards, and materials left wet risk mold. For the overall picture, see water damage in Annapolis, MD.

Why basements flood

Knowing the cause matters, because it decides what's covered by insurance, who needs to fix it and what cleanup the water requires.

Heavy rain and groundwater

When the soil around a foundation is saturated, water can seep through cracks, joints and the floor. The Maryland Insurance Administration treats seepage through foundation walls or floors as a maintenance issue, and says it is generally not covered by homeowners policies or flood policies, so it is worth documenting the cause as well as the damage.

Sump pump failure

A sump pump moves water out of a pit in the basement floor, and it can fail from a power outage, a stuck float, a clogged line or simply age, often during the storms when it's needed most. The MIA says a sump pump overflow may be covered if you bought a water or sewer backup endorsement.

Plumbing and sewer backups

Floor drains and basement toilets are the lowest openings in a home's plumbing, so a sewer backup shows up there first. That's contaminated water and a different job. See sewage backup cleanup.

Window wells, grading and gutters

Surface water that has nowhere to go can pool against the house or fill a window well. Downspouts that discharge next to the foundation and soil that slopes toward the house are common contributors.

Basement water removal

Pumping out in stages

When the ground outside is still saturated, emptying a flooded basement too quickly can put stress on walls and floors. Contractors often remove water in stages for that reason, and this is one of the reasons to leave deep water to professionals.

Electrical safety in a flooded basement

The CDC's advice is never to turn power on or off, or use an electric tool or appliance, while standing in water. Furnaces, water heaters, panels and outlets are often in the basement, so if water is near any of them, call an electrician or your utility before going in. See water removal and extraction for how extraction is done.

Finished and unfinished basements

Finished basements

Drywall, carpet, pad, baseboards and insulation hold water. Guidelines built on the S500 standard say wet insulation can't be adequately dried and should be removed, carpet wet with contaminated water must be replaced, and drywall should be replaced if drying isn't started within 48 hours or completed within 72 hours. A finished basement often means cutting open the lower part of the wall to dry the cavity.

Unfinished basements

Concrete and block walls can be dried, though they hold water for a long time, and stored boxes and cardboard are usually the first casualties. Moving belongings to dry shelving and keeping them off the floor reduces losses next time.

Drying a basement and preventing mold

Basements stay cool and damp, so they dry slowly without help. Dehumidifiers and air movers pull moisture from the air and the structure, and moisture readings show when the walls and floor are actually dry. The EPA says to dry water-damaged areas within 24 to 48 hours to prevent mold growth, and says absorbent or porous materials such as ceiling tiles and carpet may have to be thrown away if they become moldy. If mold has already developed, see mold remediation, and for how drying works see structural drying and dehumidification.

Sump pumps, drains and keeping water out

Cleanup fixes the damage, not the cause, and this is where a plumber or waterproofing specialist comes in. Things worth having a professional check include:

whether the sump pump works, has a working float and discharges away from the house
whether a battery backup or alternative power source makes sense, since storms often cut power
whether downspouts carry water well away from the foundation
whether soil and hard surfaces slope away from the house
whether cracks, window wells or floor drains are letting water in

Our guide to why basements flood and how to reduce the risk goes through each of these.

Insurance and basement flooding

Coverage depends on how the water got in. Per the Maryland Insurance Administration, flood damage generally requires a flood policy, a sump pump overflow or sewer backup may be covered only with a water or sewer backup endorsement that Maryland law requires insurers to offer, and seepage through foundation walls or floors generally isn't covered. Call your insurer before cleanup starts, and photograph the water line.

Basement flooding in Annapolis

Annapolis and the surrounding communities are a mix of older homes in the city and waterfront neighborhoods built over the 20th century. Annapolis Neck and Cape St. Claire are surrounded by water, Arnold sits between two rivers, and older neighborhoods such as West Annapolis have houses of many ages and foundations. Homeowners in Parole near the US 50 corridor often ask about drainage and sump pumps. The City says its lowest-lying areas are downtown, Eastport and nearby streets, so basements and garages there face tidal flooding as well as rain. For the whole picture, see Annapolis water damage restoration.

How basement flooding cleanup works

Make it safe
Power, gas and access are checked before anyone goes down the stairs.
Find and stop the source
The crew or a plumber identifies whether the water came from the ground, a pump, a pipe or a drain.
Remove the water
Water is pumped out, often in stages, and soaked materials are extracted.
Remove what can't be dried
Wet insulation, carpet and pad, and drywall that can't be dried in time are removed.
Clean and dry
Surfaces are cleaned, and dehumidifiers and air movers dry the space with readings recorded.
Prevent and rebuild
Pumps, drains and grading are addressed, then finishes are rebuilt.

Questions to ask before you hire

What do you think caused the flooding, and who should fix that?
How will the water be removed, and over what timeframe?
Which materials in a finished basement will be removed and which dried?
How will moisture be measured and documented?
Will you test or address mold if it appears, or refer it out?
What is your MHIC license number?

Frequently asked questions

Why does my basement flood when it rains?

Usually because water has nowhere else to go: saturated soil, cracks in the foundation, a failed sump pump, a clogged drain, a window well that fills, or downspouts and grading that direct water toward the house.

Is it safe to go into a flooded basement?

Not until you know the power is off safely and there is no gas smell. The CDC says never to turn power on or off, or use electrical tools, while standing in water, and contaminated water can harm skin and eyes.

How fast should a flooded basement be pumped out?

Contractors often pump out in stages, because emptying a basement too quickly while the surrounding soil is saturated can stress the walls and floor. Ask the contractor how they will handle it.

Does insurance cover a flooded basement?

It depends on the cause. The Maryland Insurance Administration says flooding generally needs a flood policy, sump pump overflow or sewer backup may be covered only with a backup endorsement, and seepage through walls or floors is generally not covered.

Do I need a sump pump?

It depends on the home and the site. A plumber or waterproofing specialist can tell you whether a sump pump or other drainage would help, and whether a backup power source makes sense.