The cause is generally that the flooring or subfloor is not securely attached to the joists underneath. Usually this happens because the joist settle or bend over time and the flooring becomes loose or detached in spots.

What causes wood floors to feel spongy?

If the floor feels springy and spongy when you walk, the subfloor might not be completely attached. Another reason for a soft floor could be from overextended joists; meaning the joists holding the house up are too long and not supported enough.

How do you fix soft spots on hardwood floors?






Quote from Youtube video: Areas like hallways or doorways we have a simple solution that involves drilling a small hole between planks. And injecting a two-part epoxy that expands under the floor and fills the voids in hollow.

Why does my floor have soft spots?

Your floors are uneven or sunken in parts.



If you notice a soft spot under carpet or wood flooring, it could mean that the panels below have weakened. While replacing the entire subfloor may not be necessary, you will have to replace the damaged pieces to prevent the rot from spreading.

How do you fix soft spots on the floor?

Quote from the video:
Quote from Youtube video: And one is just straight needle just like that which is perfect. You can actually go and cut this out attach this right here you can unscrew the top whenever we're filling.

How much does it cost to fix soft spots in floor?

Laminate Floor Repair Cost by Problem

Problem Average Cost
Soft Spots $150 – $450
Bubble $200 – $800
Cupping $250 – $750
Water Damage $500 – $3,000

How do you get moisture out of hardwood floors?





Use a dehumidifier placed at the highest setting possible to dry the floors. Place it in the center of the room and leave it on for at least 24 hours. Next, place fans around the room so the entire surface receives the blowing air. Place the fans at the highest settings possible.

What does soft floor mean?

What is soft flooring? Soft flooring is characterised by a high level of elasticity. Unlike hard flooring, soft flooring has a bit of give when walked on, meaning that footfalls on elastic flooring are much more muffled than on hard flooring.

Why does my wood floor sound hollow?

The most common cause for hollow or loose spots in a wood floor system is not getting the concrete substrate flat to industry requirements.

How can you tell if floorboards are rotten?

Noticed a damp, musty smell in your home? If there are no visible signs of mould on the walls and the carpet isn’t the culprit, you could be dealing with rot inside your floor. Creaky floorboards are a tell-tale sign that joists and floorboards are damaged or decaying.

What is floor hump?



When a floor joist or joists are too long and extend past the center beam, they can cause a hump in the floor. A wood floor joist will deflect or sag near the center of the joist under the weight of the flooring and furniture.

How do you fix a soft subfloor?

Quote from the video:
Quote from Youtube video: And pop it up box it in with two by fours put the subfloor block back on or a new piece of plywood if the other subfloor is damaged. And then screw it all back down. Now that one's done.

How much floor sag is acceptable?

Building codes governing framed floors include an allowance for sagging, which sounds bad. But the allowable limit is 1/360 of the span, which isn’t much.

How can you tell if a floor joist is rotten?



Telltale Signs of Damaged Floor Joists

  1. Moist, rotting wood.
  2. Skewed or unlevel door and window frames.
  3. Sagging, sloping, or uneven upstairs floors.
  4. Tilting or sinking crawl space supports.
  5. Cracks in the interior drywall.


Do uneven floors mean foundation problems?

If you’re considering purchasing a home with uneven floors, don’t wait to investigate the potential issues beneath the home’s surface. The slope or slant of the floor may be a minor cosmetic issue, or it could indicate water damage or major problems with the home’s structure or foundation.

How do I know if my floor is sinking?

4 Signs Your Home Has a Sinking Foundation

  1. Foundation Cracks. One of the most obvious signs that you’ve got a problem with foundation sinking or settling is finding noticeable cracks in your foundation walls. …
  2. Crack In Walls Or Above Windows And Door Frames. …
  3. Sticking Doors Or Windows. …
  4. Uneven Floors.



How do you know if your house is shifting?

Signs your house is shifting and experiencing differential settlement

  1. Doors and windows are sticking and/or don’t close properly. …
  2. Walls that are pulling away from ceilings and floors. …
  3. Uneven floors. …
  4. Cracked walls. …
  5. Bowed walls. …
  6. Cracked floors. …
  7. Torn wallpaper. …
  8. Wall rotation.

Why are there dips in my floor?

One of the primary causes of sloping floors, particularly common in older homes, is a house settling. House settling is a natural process in which a building gradually sinks into the ground over time. As the soil beneath the foundation begins to shift, a home slowly sinks downwards into the earth.

How do you fix dips in hardwood floors?

There are multiple ways to fix a floor that sags and dips.

  1. Pour Self-Leveling Underlayment. Pour self-leveling underlayment in the problem area. …
  2. Sister the Joists. …
  3. Prop Up the Joists. …
  4. Lay Down New Hardwood.



Why is my hardwood floor sagging?

Poor structural support is the most common cause of sagging floors. When your floor joists start to bend downwards due to pressure and weight of the overlying material, your floor will start sagging. The best way to fix sagging floor joists is by installing new support structures such as jacks.