# Sill Plate Replacement Baton Rouge | Rot & Termite Repair

> Sill plate replacement in Baton Rouge: shore the wall, cut out rotted or termite-damaged sill, install treated lumber and anchors. Written scope. Call today.

URL: https://foundationrepairbatonrougelouisiana.com/sill-plate-replacement/

![Sill Plate Replacement in progress at a Baton Rouge home](https://foundationrepairbatonrougelouisiana.com/images/hero-sill-plate-replacement-treated-lumber-baton-rouge.webp)

# Sill Plate Replacement in Baton Rouge

Shoring the wall, cutting out rotted or termite-eaten sill and setting new treated lumber — common in pre-1950 Baton Rouge homes. Typical range: **$100–$300 per linear ft**.

[Call (225) 635-8757](tel:+12256358757) [Book a free evaluation](https://foundationrepairbatonrougelouisiana.com/contact/)

-   Free on-site evaluation
-   Written per-piling price
-   Same-day callback

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Free on-site evaluation · written price

-   20 years of industry experience
-   Written per-piling pricing
-   Same-day callback
-   Serving 5 parishes

Last updated: September 22, 2026

[Foundation Repair Baton Rouge](https://foundationrepairbatonrougelouisiana.com/) is a foundation repair company with 20 years of industry experience, serving Baton Rouge and the Capital Region, and sill plate replacement is routine work in the city’s older raised homes. The sill is the horizontal board sitting on top of the foundation or perimeter piers that the walls and floor rest on. It’s the lowest piece of wood in the house, closest to splash-back and crawl-space humidity, so it’s usually the first to rot — and termites love it.

Sill plate replacement typically costs **$100–$300 per linear foot**, depending on access, how much of the wall has to be opened, and whether studs and joist ends are damaged too.

## How we replace a sill

We probe the sill along its whole length and mark exactly how much has to come out — often it’s a section, not the whole run. The wall is shored on temporary supports so it can’t drop. The rotted wood is cut out back to sound material, damaged stud bottoms and joist ends are repaired, and a new ground-contact treated sill goes in on a moisture break. Galvanized anchors and connectors tie it back together, and the floor is re-leveled and re-measured.

## Stopping it happening again

Sills rot because they stay wet. We look at gutters, downspouts, grading and crawl-space moisture as part of the job — see [crawl space repair](https://foundationrepairbatonrougelouisiana.com/crawl-space-repair/). Because termites are often involved, coordinate with a licensed pest control operator for treatment before new wood goes in. If multiple sections, beams or piers are damaged, the job becomes a broader [pier and beam repair](https://foundationrepairbatonrougelouisiana.com/pier-and-beam-foundation-repair/).

## What's included

-   Probe and moisture test along the full sill
-   Written footage of sill to replace
-   Temporary shoring of the wall
-   Rotted or termite-damaged sill cut out
-   New treated sill set on a moisture break
-   Studs and joist ends repaired where damaged
-   Anchoring with galvanized hardware
-   Re-level and after-repair readings

## Sill damage options compared

DIY / patch it

Cheapest crew

Done properly

Removes rot

No

Partly

All of it, to sound wood

Lumber

—

Untreated

Ground-contact treated

Moisture break

No

No

Yes

Typical cost

$50

Varies

$100–$300 per linear ft

## Related resources

-   [How Much Does Pier and Beam Foundation Repair Cost?](https://foundationrepairbatonrougelouisiana.com/guide/pier-and-beam-foundation-repair-cost/)
-   [Foundation Damage After a Flood — What to Look For](https://foundationrepairbatonrougelouisiana.com/guide/foundation-damage-after-flood/)
-   [9 Signs of Foundation Problems in Baton Rouge Homes](https://foundationrepairbatonrougelouisiana.com/guide/signs-of-foundation-problems/)

Talk to a person

Free on-site evaluation, written price per piling.

[(225) 635-8757](tel:+12256358757) [Book online](#service-form)

Mon–Fri 7:00 AM–6:00 PM · Sat 8:00 AM–1:00 PM

Methods & standards

-   Ground-contact treated lumber
-   Wall shored before any cut
-   Galvanized anchors and connectors
-   Sill gasket / moisture break
-   Termite treatment coordinated
-   LSLBC-registered contracting

Price guide

$100–$300 per linear ft

Access and wall finishes drive price

[Estimate my house](https://foundationrepairbatonrougelouisiana.com/tools/foundation-repair-cost-estimator/)

The process

## How sill plate replacement works, step by step

1.  1
    
    ### Probe
    
    We test the sill along its length and mark exactly how much has to go.
    
2.  2
    
    ### Shore
    
    The wall above is carried on temporary supports.
    
3.  3
    
    ### Replace
    
    The damaged section comes out; new treated sill goes in on a moisture break.
    
4.  4
    
    ### Anchor and level
    
    Galvanized hardware ties it back together and the floor is re-measured.
    

## What the work looks like

Illustrative photos of the methods described on this page.

[Foundation Repair Baton Rouge Call us to schedule a free sill plate replacement estimate Free laser survey. Written plan with unit prices. (225) 635-8757](tel:+12256358757)

## Sill Plate Replacement FAQ

### How do I know if my sill plate is rotted?

Floors that slope toward an outside wall, gaps opening at baseboards, doors binding on exterior walls, and wood that crumbles or lets a screwdriver sink in from the crawl space are the usual signs.

### Can a sill plate be replaced without tearing off siding?

Usually, yes. Most sill replacement is done from the crawl space and the outside base of the wall, with some siding or trim removed along the bottom where needed.

### Is termite damage covered by insurance?

No. Standard homeowners policies exclude termite and insect damage. A termite bond from a pest control company may cover repairs depending on its terms.

### Is the foundation evaluation really free?

Yes. The on-site evaluation, laser elevation survey and written plan cost nothing and carry no obligation. If the numbers say your house is within normal tolerance, we tell you that and leave the readings with you. An independent engineer's report, when a lender or buyer requires one, is billed by the engineer — typically $500–$2,000.

## Related services

[Pier & Beam Foundation RepairReplacing failed piers, rotted sills and cracked beams under raised Baton Rouge homes — the structural parts, not just the shims.](https://foundationrepairbatonrougelouisiana.com/pier-and-beam-foundation-repair/) [Crawl Space RepairVapor barriers, drainage and supplemental supports under raised homes — stopping the humidity that rots sills and joists.](https://foundationrepairbatonrougelouisiana.com/crawl-space-repair/) [House LevelingRe-leveling raised homes with steel shims and new pier caps, measured with a laser before and after so you see the numbers.](https://foundationrepairbatonrougelouisiana.com/house-leveling/)

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