Reasons for Water Seeping Through the Floor. There are several common reasons for water seeping up through your basement floor, including backed up or collapsed drains, leaking pipes or appliances, a cracked foundation, clogged gutters, and poor drainage.

What causes water to come up through concrete?

Water can seep through concrete through an imbalance of relative humidity. The direction moisture moves is determined by the humidity in the concrete and air, so if the concrete has higher relative humidity than the surrounding air, it will release moisture into the air.

How do I stop my concrete water from seeping?

Supporting Joints



Any joints in your concrete floor also invite water to seep in, and the best way to stop water in these areas is to seal them up with exterior-grade caulk.

What is it called when water comes up through concrete?

Concrete floor seepage occurs primarily when there is a large amount of hydrostatic pressure beneath the floor of your home.

How do I keep water from seeping through my basement floor?

Here are eight strategies to keep water out of your basement.

  1. Add Gutter Extensions. …
  2. Plug Gaps. …
  3. Restore the Crown. …
  4. Reshape the Landscape. …
  5. Repair Footing Drains. …
  6. Install a Curtain Drain. …
  7. Pump the Water. …
  8. Waterproof the Walls.


Can water rise up through concrete?

Damp rising through concrete floor slabs is fairly common when a damp proof membrane has failed or was not installed before the floor was laid. It becomes a problem when the moisture levels are too high and water is transferred to the finishing layer above.

Why does water get in my basement when it rains?

During periods of heavy or persistent rain, the soil can become saturated, creating hydrostatic pressure (or water pressure) that can push moisture and water through your basement walls and floor. The looser soil around your foundation tends to absorb more water.

How do you stop an active water leak in a basement wall?

Use WATERTITE® HYDRAULIC CEMENT to patch all holes and cracks, especially active water leaks. To stop active and non-active water leaks, seal the joint where the floor and wall meet with WATERTITE® POLYURETHANE SEALANT.

Can you fix a leaky basement from the inside?

Most basement leak repairs, regardless of whether they are performed on brick, cement block, or concrete foundations, can be performed from the inside or the outside of the home. If you have a poured concrete foundation, both interior and exterior waterproofing repairs can be effective in preventing a wet basement.

Will Flex Seal stop basement leaks?

It can also help seal out air, water, and moisture and is chemical and mildew resistant – making it a great choice for your basement walls. Start by taping off the walls you will be waterproofing with blue painter’s tape.

How can you tell if there is a water leak under concrete?

Signs Of A Leak Under Concrete

  1. 1). There is water or damp spots on your floor. If hot-water lines are leaking, this may also lead to warm spots on your floor. …
  2. 2). You can hear the sound of rushing water underneath your floor. …
  3. 3). There is a significant increase in your water bill.


How do you determine if you have a slab leak?

How To Detect a Slab Leak

  1. You hear water running under your floors, but your taps and plumbing appliances are off.
  2. Carpets are damp or wet without an explanation.
  3. You smell mold, mildew, or a general mustiness.
  4. There are warm spots on your floor.
  5. Floorboards are warped or buckling.
  6. Your water pressure has decreased.

How do I know if my pipes are leaking under my floor?

7 Signs of a Leaking Pipe in Your Home

  1. Skyrocketing Water Bills. Your water bill usually goes up in the summer if you have a lawn. …
  2. Visible Mold & Mildew. …
  3. Musty Smelling Rooms. …
  4. Stained and Damaged Ceilings, Walls, Floors. …
  5. A Running Meter. …
  6. Wet Spots. …
  7. Foundation Cracks.


How do you tell if you have a foundation leak?

How can I tell if I have a slab leak?

  1. Your water bill goes up.
  2. Your floor has “hot spots”
  3. Standing water near your home’s foundation.
  4. Cracking on ceilings and walls.
  5. Sound of running / dripping water.


How do I find a water leak under my foundation?

Quote from the video:
Quote from Youtube video: Number one check the plumbing line going out of the water heater do you see anything do you hear anything the sound of rushing water is the first clue you're on the right.

How serious is a foundation leak?

Leaking foundations seep into your walls and carpet, often resulting in a mold outbreak. If there’s pooling or standing water because of a foundation leak, it’ll also wreck your home floors.