Sand vs Pine Shavings: Best Chicken Coop Bedding

Pine shavings win for most backyard keepers. They absorb moisture quickly, support the deep litter method, and stay warmer in winter. Sand drains well and is easy to scoop, but it gets cold, doesn't compost, and can trap ammonia below the surface when wet. Your coop's ventilation controls how well either bedding performs. Without enough airflow, both turn sour fast.

What Sand Does in a Coop

Sand doesn't absorb moisture; it drains it. A dry layer of coarse builder's sand stays relatively dry on top even after a flock deposits droppings, because liquid passes through to lower layers. This makes daily maintenance practical: a kitty litter scoop pulls droppings off the surface without disturbing the base.

The key word is coarse. Play sand packs together when wet and creates a breeding ground for mold and bacteria. Builder's sand or coarse river sand, with grain sizes above 1 mm, resists compaction and drains consistently.

What sand does not do: it doesn't compost. In a deep litter system, the microbial activity in shavings generates heat and consumes nitrogen, which reduces ammonia. Sand has no carbon to feed those microbes. You get drainage, not biological breakdown.

In winter, sand holds cold. A thick sand layer can drop to ambient temperature overnight and stay there. That cold floor surface pulls heat from birds that roost low or spend time on the ground. This matters more in uninsulated coops or in climates that regularly fall below 20°F.

In summer, sand's drainage is an asset. A well-ventilated coop with sand dries quickly after heavy use. Flies can't establish larval habitat in dry coarse sand the way they can in damp shavings.

What Pine Shavings Do in a Coop

Pine shavings absorb moisture rather than drain it. A 4-inch layer can hold a substantial amount of liquid before it feels wet to the touch. This is useful in cold-climate coops where you want the floor to feel warm and cushioned.

Kiln-dried pine shavings are the standard choice. Fresh or green pine shavings can contain oils that irritate respiratory tissue. Penn State Extension recommends dried shavings as the baseline for backyard flock management, noting the absorbency advantage over hay and straw.

Cedar shavings are not a substitute. Cedar contains aromatic compounds that damage poultry respiratory tissue at sustained exposure. Use pine, not cedar.

The deep litter method works with shavings. You start with 4 to 6 inches, add fresh material on top of soiled litter every week or two rather than doing full cleanouts, and allow microbial breakdown to reduce nitrogen. The composting action generates a small amount of heat. Some keepers in cold climates run a full-winter deep litter system without a cleanout, topping up as the material compresses. The University of Kentucky ID-204 notes that managed deep litter can stay drier than frequently spot-cleaned litter because surface layers wick moisture down into the composting base.

The downside is dust. As pine shavings dry and break down, they create fine particulate. A coop with poor ventilation concentrates that dust at bird height, contributing to respiratory irritation alongside ammonia. This is another reason ventilation and bedding choice are linked.

How Bedding Affects Ammonia Levels

Ammonia doesn't come from bedding. It comes from bacteria breaking down uric acid in droppings. Bedding material affects how fast that process runs by controlling moisture.

The bacteria that convert uric acid to ammonia are most active when litter moisture content exceeds 30 percent. Below that threshold, ammonia production slows significantly. Research from Auburn University's poultry program found that litter moisture above 35 percent correlates with ammonia levels above 25 ppm, which is the threshold for respiratory damage in chickens at chronic exposure.

Sand stays below that threshold more easily when the coop is ventilated, because liquid drains to lower layers rather than saturating the top 2 inches where most microbial activity occurs. Pine shavings absorb moisture into the material itself, which helps until the material becomes saturated and can no longer take more.

Both beddings fail the same way: when the coop doesn't move enough air. Eight chickens produce roughly one gallon of water vapor per day through respiration and droppings. That moisture has to exit through ventilation, or it saturates whatever bedding you're using. A coop with insufficient vent area will produce ammonia whether the floor holds sand or shavings.

Use the ventilation calculator to confirm your coop moves enough air for your flock size before blaming the bedding for the smell.

Which Setup Works for You

Choose sand if:

• You want low-effort daily maintenance with a scoop rather than periodic full cleanouts
• Your coop floor has drainage or you can vent below the floor
• You're in a mild-winter climate or your coop is well-insulated
• You're managing fly pressure in summer and want a less hospitable breeding surface

Choose pine shavings if:

• You want to run a deep litter system through winter
• Your climate drops below 20°F regularly and floor warmth matters
• You prefer a less frequent maintenance schedule (shavings tolerate it; sand does not)
• You're in a humid climate where drainage alone won't solve moisture

On ventilation with either option: Bedding choice adjusts how quickly moisture accumulates. Ventilation determines the ceiling. A well-ventilated coop with shavings will outperform a poorly ventilated coop with sand every time.

The baseline ventilation standard from UKy ID-204 is 1 square foot of vent area per 10 square feet of coop floor. If your coop is below that, start there before changing bedding.

Frequently Asked Questions

Is sand or pine shavings better for preventing ammonia in a chicken coop?

Neither prevents ammonia on its own. Ammonia forms when bacteria break down droppings in moist conditions. Sand reduces surface moisture by draining it. Pine shavings reduce it by absorbing it. A coop with enough ventilation to move moisture out keeps either bedding dry enough to suppress ammonia. Bedding without ventilation will smell regardless of the material.

Can I mix sand and pine shavings?

Some keepers put a sand layer under shavings to improve drainage. The shavings sit on top, the sand pulls excess liquid down. This works if the coop floor allows drainage. If the floor is sealed plywood, the sand layer becomes a pooling zone rather than a drain.

How deep should chicken coop bedding be?

For pine shavings, start at 4 inches and build to 6 to 8 inches for a deep litter run. For sand, 3 to 4 inches is sufficient for daily scooping. Thin layers of any bedding dry out fast but give birds no cushion, which stresses feet and joints over time.

Does sand get too cold for chickens in winter?

It can. Coarse sand has low thermal mass and drops to ambient temperature quickly. Birds roosting above the floor are fine. Birds that spend time on the floor in a cold coop are at risk of chilled feet. If your winter temps regularly fall below 20°F, pine shavings are the warmer option.

What bedding should I avoid in a chicken coop?

Cedar shavings are a hard no: the aromatic oils cause respiratory damage. Straw holds moisture and mats down, making it harder to dry than either sand or shavings. Fine play sand compacts when wet and creates mold habitat. Hay behaves like straw with added mold risk if it was baled damp.