We recently added a 3/4 bathroom on our third floor of a bal...

[lnanton]

We recently added a 3/4 bathroom on our third floor of a ballon framed house built in 1911. The beams between the second and third floor were reinforced because they were only 6inches. We have noticed a sagging of the third floor right over where the reinforced beams were placed. Is this causing major structural damage?

[vince]

Originally Posted by lnanton

We recently added a 3/4 bathroom on our third floor of a ballon framed house built in 1911. The beams between the second and third floor were reinforced because they were only 6inches. We have noticed a sagging of the third floor right over where the reinforced beams were placed. Is this causing major structural damage?

If possible run a beam perpendicular to the joists on each level from ground floor up. These will be supported by posts or columns.

[concord carpenter]

When you say beams do you mean flor joists? Do you remember how they were reinforced?

Inanton is correct in that you can correct floor sag by installing a beam that is perpendicular to the joistsd but most likely you do not have the space for this and the rooms are probably finished.

This is a structural repair and should be evaluated by a structural engineer. The fix will most likely involve installing new, code compliant floor joists.