Sagging Second Story Floor Joist

Sagging floors are often the symptoms of structural damage to the floor joists below the surface.

Sagging second story floor joist. Nailing two 2x4s together will work to span about three joists unless the sag is under a weight bearing wall. As a rule the same kinds of methods that take the bounce out of solid lumber floors work for i joists. Tack a beam under the sagging joists. The method used to fix the problem depends on the reason the joist is sagging and the number of joists.

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. Jacking them up too fast may cause cracks in the walls and floors overhead. A dip or slope in the floor could indicate one or more saggy joists beneath the subfloor. I just bought my first home that is a 1 1 2 story bungalow built in 1919.

Termites can rot or damage the joists typically made of wood rendering the pieces unable to hold up the floor. Sagging second story floor joist. I am in the process of remodeling and am currently redoing the ceilings in the dinning room and living room. Common reasons for sloping or sagging second story floors.

Hey everyone my name is dane and i am new to the forum. A day until they re level. Load bearing wall removed or altered on first floor. Thre ways to fix a sagging or sloping floor.

We have a large bedroom on the second story above a large bedroom on the first floor each about 12 x 18 ft the downstairs bedroom. Upon removing the old plaster and latte boards i confirmed what i. But when tom sisters or stiffens the underside of i joists he uses plywood. 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 plywood subfloor will bridge any minor waves in the existing floor and leveling compound would help too. 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. 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. For sistering cut inch plywood into long strips the same width as the joist s web.

Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in. Bounciness is usually caused by undersized floor joists. 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. Still if asked to span too great a distance i joists will bounce.