THE HOUSE FILES · Structure & Foundation

Termite-Damaged Center Floor Joist

Termite damage compromised a center floor joist; an added girder and jacks supported the damaged wood rather than repairing it.

Close-up of a floor framing member with shredded wood loss consistent with termite damage near a masonry wall

The Finding

Termite damage had removed substantial material from a center floor joist. A reinforced girder and jack posts had been added underneath—but those supports were holding the damaged joist rather than repairing or replacing it.

What Was Wrong

In the basement, a floor joist running through the center of the home showed significant termite damage—shredded, hollowed wood loss along the member.

The report stated that the structural integrity of the wood was compromised, and that a reinforced girder and floor jacks were installed but only supported the damaged wood.

Why It Mattered

A center joist is part of the floor’s primary framing. Supporting a termite-damaged joist may reduce movement, but it does not restore the wood that was destroyed.

This File does not claim the floor was about to collapse. It does claim a serious structural condition that needs proper repair of the damaged member—not only temporary support.

What Was Recommended

The report recommended that a licensed contractor evaluate and repair the damaged wood. A qualified pest-control professional should also assess treatment needs.

Do not treat existing jacks or an added girder as proof that the damaged joist was corrected.

Evidence From the Inspection

  • Alternate close-up of termite-damaged floor framing with layered wood loss
    Another close-up showing characteristic layered wood loss.
  • Basement multi-ply girder supported by a metal column and an adjustable jack post
    Added girder with metal column and jack post under the floor system.