Sagging Second Story Floor Joist

The method used to fix the problem depends on the reason the joist is sagging and the number of joists.

Sagging second story floor joist. But when tom sisters or stiffens the underside of i joists he uses plywood. Hey everyone my name is dane and i am new to the forum. As a rule the same kinds of methods that take the bounce out of solid lumber floors work for i joists. Jacking them up too fast may cause cracks in the walls and floors overhead.

Termites can rot or damage the joists typically made of wood rendering the pieces unable to hold up the floor. For sistering cut inch plywood into long strips the same width as the joist s web. Thre ways to fix a sagging or sloping floor. Upon removing the old plaster and latte boards i confirmed what i.

To prevent the collapse of your second story or injury from falling through a rotten floor you must repair the joists as soon as possible. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall. A day until they re level. On the top side of the floor another fix it idea to lay down new hardwood over the existing floor.

Depending upon the conditions it is possible to strengthen or repair existing framing members such as floor joists or roof rafters by adding reinforcing material sandwiching the member on either side with plywood is sometimes worthwhile but the plywood must be installed correctly for greatest strength. I am in the process of remodeling and am currently redoing the ceilings in the dinning room and living room. I just bought my first home that is a 1 1 2 story bungalow built in 1919. Load bearing wall removed or altered on first floor.

Common reasons for sloping or sagging second story floors. Sagging can be the result of undersized joists an undersized support beam or support posts that have rotted at the bottom or settled into the ground. You will have to make sure your joists can handle the addition of considerably more weight from the plywood subfloor and any floor coverings. One of our recent whole house balloon frame remodeling projects had a floor so out of level that anyone sitting on the toilet in the future bathroom risked sliding off.

If a load bearing wall is removed on the first floor then the second story floor joist or trusses may drop down in the area where the load bearing wall was removed. Sagging floors are often the symptoms of structural damage to the floor joists below the surface. A plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too. Tack a beam under the sagging joists.

Second floor joists are nailed to the bearing walls and supported by a piece of stock called a ribbon board in this case 1 6 stock let into the studs see drawing right. A dip or slope in the floor could indicate one or more saggy joists beneath the subfloor. Bounciness is usually caused by undersized floor joists. Sagging second story floor joist.