Cost to Replace a Rim Joist
Replacing a rim joist means removing rotted or damaged wood at the house frame and fitting new pressure-treated lumber, sometimes alongside damaged sill-plate sections. It is a hard structural repair because the rim joist is load-bearing and the structure may need temporary support while work is underway. Homeowners commonly address it when rot or structural damage affects the frame.
Common reasons homeowners do this job
- Rot in the rim joist
- Structural damage to the house frame
- Damaged sections of sill plate
- A need to restore the structural integrity of the frame
DIY or call a pro?
A licensed professional should handle rim joist replacement because it involves a structural, load-bearing part of the home. An improper repair can cause structural failure or collapse, and temporary supports or bottle jacks may be needed to stabilize the house. Structural work may also require professional engineering oversight or a licensed contractor.
Frequently asked questions
- Can I replace a rim joist myself?
- Hire a professional. This repair suits a licensed pro because the rim joist is load-bearing, and incorrect work can lead to structural failure or collapse. A licensed professional should assess the damage, determine whether temporary support is needed, and complete the repair.
- What makes rim joist replacement more expensive?
- The price rises with the size of the repair, labor time, and the materials needed, including pressure-treated lumber and structural fasteners. Haul-away of removed material can add to the work, and a small repair may still involve a minimum or trip charge.
- How do I know whether the whole rim joist needs replacement?
- The rim joist and sill plate should be inspected for rot or structural damage first. The extent of the damage determines whether a specific section can be replaced or whether more of the joist needs to be removed.
- Why does a rim joist repair sometimes need jacks?
- Temporary supports or jacks may be necessary to stabilize the structure while the damaged section is removed and replaced. Using jacks to support the weight of a house requires caution and should be managed by the licensed professional handling the structural repair.
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