While WBC hives represent classic beekeeping, poly hives represent the future. Polyurethane beehives (often called “poly hives” or “polystyrene hives”) are lightweight, durable, and extremely well insulated — making them increasingly popular with both hobbyists and commercial beekeepers.

What Exactly Is a Poly Hive?

A poly hive is made from high-density expanded polystyrene (EPS), the same tough material used for insulation in buildings.
These hives are designed to:

Retain heat
Reduce moisture issues
Provide excellent winter protection
Support faster spring buildup

All while weighing far less than traditional wooden boxes.

Benefits of Poly Hives

✔ Superior Insulation

Poly hives keep bees warmer in winter and cooler in summer.
This reduces stress on the colony and helps maintain hive temperature using less energy.

✔ Lighter Weight

A full wooden super can be back-breaking.
A poly super is dramatically lighter, making lifting much easier.

✔ More Productive Bees

Because colonies maintain temperature more efficiently, they often:

Build up faster in spring
Forage sooner
Grow stronger brood patterns
Produce more honey

✔ Extremely Durable

Poly boxes don’t warp, rot, or split.
With a coat of exterior paint, they can last many years.

✔ Great for Wet Climates

Poly doesn’t absorb moisture, preventing mold and wood decay

Downsides of Poly Hives

✘ Can Dent or Chip

While durable, poly can suffer damage from rough handling or animals.

✘ Requires Painting

To protect from UV exposure, poly hives should be painted with exterior-grade paint.

✘ May Require Strap or Weight

Because they’re lightweight, strong winds can topple an unweighted hive.

✘ Not Always Compatible With Wooden Equipment

Most brands fit standard frames, but outer dimensions vary.