Shallow tooth marks only
Small grooves or scraped corners, but the deck baluster still feels firm and keeps its shape.
Start here: Check for hidden splitting at the top and bottom ends before treating it as cosmetic damage.
Deck railing damage
Squirrel Chewed Deck Baluster
Direct answer: If a squirrel chewed one deck baluster, start by checking whether the damage is only on the surface or whether the baluster is cracked, loose, or softened by rot. Light gnaw marks can sometimes be sanded and sealed, but a split or weakened deck baluster should be replaced so the railing stays safe.
Most likely: Most of the time, the squirrel went after a baluster that already had weathered wood, a soft edge, or old finish breaking down. The real question is not the bite marks themselves. It is whether the baluster still feels solid and whether nearby railing pieces are starting to fail too.
A squirrel-chewed deck baluster is often a small repair, but railing parts do not get much grace. If the baluster is split, loose at the rail, or punky from moisture, treat it as a safety repair, not a cosmetic touch-up. Reality check: squirrels usually chew the easiest target, not necessarily the only damaged one. Common wrong move: smearing exterior filler into deep chew marks on a baluster that is already cracked at the fasteners.
Don’t start with: Do not start by filling chew marks or painting over them before you push on the railing and inspect the baluster ends. Covering damage first can hide a weak piece that should have been replaced.
If the baluster is still hard, straight, and tightsand the rough area, seal bare wood, and keep an eye on it.
If the baluster wiggles, splits, or crushes under light probingreplace that deck baluster and inspect the adjacent railing pieces before using the rail normally.
Last reviewed: 2026-04-21
What the squirrel damage looks like on a deck baluster
Deep gouges on one edge
A corner or face is chewed back enough to change the baluster shape, but it may still be standing straight.
Start here: Press on the railing and inspect the fastener area to see whether the baluster has been weakened.
Baluster is cracked or loose
The deck baluster moves, has a visible split, or opens up where it meets the rail.
Start here: Treat this as a replacement situation and inspect the neighboring balusters right away.
Chewed area feels soft or crumbly
The damaged spot dents easily with a screwdriver or awl, or the wood looks dark and weathered under the finish.
Start here: Check for rot or insect damage before blaming the squirrel alone.
Most likely causes
1. Surface gnawing on an otherwise sound deck baluster
You see tooth marks and rough edges, but the baluster is still hard, straight, and tight at both ends.
Quick check: Push the railing firmly and squeeze the baluster by hand. If nothing shifts and the wood stays hard, the damage is likely cosmetic.
2. Deck baluster split from chewing plus weather exposure
The squirrel started the damage, then sun, rain, and movement opened the grain or split the baluster near a fastener.
Quick check: Look closely at the top and bottom attachment points for hairline cracks, lifted grain, or a split that widens when you push on the rail.
3. Rotten or softened deck baluster attracted chewing
Squirrels often go after softer wood. If the baluster was already damp, weathered, or poorly sealed, the chew marks may just be exposing a bigger problem.
Quick check: Probe the chewed area and the lower end of the baluster. If the tool sinks in easily or brings out soft fibers, the piece is not sound.
4. Wider railing wear, not just one bad baluster
One chewed baluster sometimes sits in a section where several balusters, rails, or fasteners are loose from age and weather.
Quick check: Grab the rail and check the two balusters on each side. If more than one moves, the repair needs to include the surrounding railing section.
Step-by-step fix
Step 1: Check whether this is cosmetic damage or a railing safety issue
A deck baluster can look ugly but still be serviceable, or it can look minor and already be weak at the ends. You want to sort that out before doing any patching.
- Push on the top rail with normal body weight, the way someone would lean on it.
- Watch the chewed deck baluster and the two next to it for movement, twisting, or opening cracks.
- Grip the damaged baluster by hand and try to wiggle it front to back and side to side.
- Look at the top and bottom ends where the baluster meets the rail for splits, pulled fasteners, or gaps.
Next move: If the railing stays firm and the damaged baluster does not move, you can keep checking for hidden wood damage before deciding on a cosmetic repair. If the baluster moves, the rail flexes too much, or a crack opens when pressure is applied, stop treating it as cosmetic.
What to conclude: Movement usually means the deck baluster or its attachment has been weakened enough that replacement is the safer fix.
Stop if:
- The railing feels unsafe to lean on.
- More than one baluster is loose.
- The top or bottom rail is splitting or pulling apart.
Step 2: Probe the chewed area for soft wood, rot, or insect damage
Squirrel damage often exposes what was already going wrong underneath. Soft wood changes the repair from simple cleanup to replacement.
- Use a screwdriver or awl to press lightly into the chewed area, then into the lower end of the same baluster.
- Compare the damaged baluster to a nearby sound one. Hard wood should resist probing and feel similar.
- Look for dark staining, crumbly fibers, hollow spots, or small piles of frass-like debris that suggest insects rather than simple chewing.
- Check whether the damage is limited to one face or wraps around the baluster corners and ends.
Next move: If the wood stays hard and only the outer surface is scarred, the baluster may be a candidate for sanding, sealing, and monitoring. If the tool sinks in easily, the wood crumbles, or you see insect evidence, the baluster should be replaced and the cause checked further.
What to conclude: Soft or hollow wood means the squirrel may have found a weak spot, not created the whole problem.
Step 3: Inspect the fasteners and the surrounding railing section
Sometimes the baluster itself is still usable, but the screws or nails at the rail have loosened and the chew marks just drew your eye there first.
- Look for rusted, backed-out, or missing deck baluster fasteners at the top and bottom connections.
- Check whether the baluster is split right through a screw or nail line.
- Inspect the adjacent balusters and the rail faces for matching weathering, cracks, or soft spots.
- If the damaged baluster is painted, look for bubbling, peeling, or swollen wood around the connection points.
Next move: If the surrounding railing is solid and only one baluster is affected, you can keep the repair local. If nearby balusters or the rail itself are also failing, plan on a broader railing repair instead of replacing one piece blindly.
Step 4: Choose the repair: clean up and seal, or replace the deck baluster
Once you know the wood is either sound or not, the right fix gets pretty clear.
- If the deck baluster is hard, tight, and only lightly chewed, sand off splinters and sharp edges until the surface is smooth to the touch.
- Brush away dust and seal any bare wood with an exterior-grade finish that matches the rest of the railing as closely as practical.
- If the deck baluster is split, loose, or soft, remove it carefully without damaging the rail.
- Install a matching replacement deck baluster and secure it with exterior-rated deck baluster fasteners sized for the existing rail assembly.
- If the old fastener holes are wallowed out or the rail wood is weak, stop and address the rail condition before trusting the repair.
Next move: If the repaired or replaced baluster sits straight, feels tight, and leaves no sharp splinters, move on to a full railing check. If the new or existing baluster still will not tighten up, the rail assembly itself likely needs repair beyond this one piece.
Step 5: Test the railing before you call it done
A deck baluster repair is finished only when the whole section feels solid again, not just when the chew marks are gone.
- Push on the repaired railing section from several spots, including directly above the repaired baluster.
- Confirm the replacement or repaired baluster stays tight and does not twist under hand pressure.
- Check spacing against the neighboring balusters so the section looks even and functions the same as before.
- Walk the rest of the railing line and inspect for other chew marks, soft wood, or loose balusters that need attention next.
- If the section still feels questionable, limit use of that rail and schedule a carpenter or deck repair pro to inspect it.
A good result: If the railing feels solid and the baluster remains tight after testing, the repair is complete.
If not: If the section still flexes or more damage shows up, move from spot repair to a broader railing repair plan.
What to conclude: A successful fix restores both appearance and confidence in the railing section.
Replacement Parts
Repair Riot may earn a commission from qualifying purchases, at no extra cost to you.
FAQ
Can I just fill squirrel chew marks on a deck baluster?
Only if the deck baluster is still hard, tight, and free of splits. Filler can improve appearance, but it does not restore strength to a cracked or rotten baluster.
How do I know if the squirrel damage is only cosmetic?
If the baluster stays firm under hand pressure, shows no opening cracks at the ends, and resists probing with a screwdriver or awl, the damage is usually cosmetic. Any looseness or softness changes that answer.
Should I replace one baluster or the whole railing section?
Replace one baluster if the surrounding rail and neighboring balusters are solid. If several pieces are loose, soft, or split, the repair needs to expand to the whole section.
Why would a squirrel chew one deck baluster and not the others?
Usually that piece had an exposed edge, softer wood, or failing finish that made it easier to gnaw. It is common for the chewed baluster to be the first visible clue of weather wear.
Is a loose deck baluster dangerous?
Yes. A loose baluster can mean the railing section is no longer reliable, especially if someone leans on it. Treat looseness as a safety repair, not just a cosmetic nuisance.
What if the chewed area is soft and crumbly?
That points to rot or possible insect damage, not just chewing. Replace the baluster and inspect the surrounding railing before trusting that section again.