Hump In Floor Under Carpet

To remove the existing floor use a circular saw.

Hump in floor under carpet.

This would occur if the pad was not dense enough to adequately support the carpet and allowed too much flexibility in the carpet. Instead a dip in the carpet could mean that a floor joist has sustained. Step 2 remove the existing flooring. To prevent this issue the correct underpad must be used under the carpet.

Pull one corner of carpet out from under your baseboard using needle nose pliers until you can grip the carpet with your fingers. A wood floor joist will deflect or sag near the center of the joist under the weight. This isn t the same as having a floor squeak when you step on it which simply indicates that the subfloor isn t tightly fastened to the floor joist in one area. If an improper cushion is used under the carpet it could cause the carpet to buckle.

Typically carpet is attached to floors by tackless strips or double sided tape. Not only are lumps unattractive and cause eye sores but they are a hazard that causes trips and falls. Sanders and fillers can help level out concrete floors before installation to fix this problem. Since the buyer was an engineer he decided to investigate the situation himself rather than call an inspector.

You may notice a difference of approximately 3 inches. When a floor joist or joists are too long and extend past the center beam they can cause a hump in the floor. Pull it away from one wall popping it free from the tack strips. If you can feel a soft spot in the floor under the carpet the subfloor has likely been weakened or damaged.

I recently had a client with a home in contract that had little bumps under the carpet in several different spots in the living and dining room which was about 15x30 feet in size. Carpet wood and vinyl will all relay concrete problems upward. This means if you have bumps in your concrete before installation the bumps will eventually transition into your new floor causing new versions of the same problem. If the hump in the floor feels spongy or gives underfoot when you walk on it the most likely cause of the problem is underlayment that has come loose from the subfloor.