Bee Cozy Winter Hive Wraps

Frequently Asked Questions

How it's Made

WHAT IS THE BEE COZY MADE OF?

Bee Cozy Winter Hive Wraps are made with recycled high density materials. The outer layer is a tough, UV treated plastic. R8 insulate protection lines the inside of the wrap to reduce heat loss.

HOW LONG WILL MY BEE COZY LAST?

The Bee Cozy has an approximate lifespan of 5 years. This can vary to more or less depending on variables such as length of winter, exposure to sun and how well they are stored.

Inner Cover Pad

WHERE DO I PLACE THE INNER COVER PAD?

The Inner Cover Pad is designed to fit into a deep inner cover. Place the Inner Cover Pad on top of the deep inner cover and place the hive lid over top. Inner Cover Pads will also work with shallow supers.

WHY IS THE INNER COVER PAD SMALLER THAN MY HIVE DIMENSIONS?

The Inner Cover Pad is designed to fit into a deep inner cover. To account for the thicker rims of the deep inner cover, the Inner Cover Pad has smaller dimensions.

Ventilation

DOES THE BEE COZY PROVIDE VENTILATION?

Yes. Every Bee Cozy has a seal mark or seam where the two ends meet. When placing the Bee Cozy on the hive, keep the seam to the front of the hive, as it provides an air funnel for the top and bottom entrances. Secure the entrance reducer in place and ensure top and bottom ventilation.

Storage

MY BEE COZY IS WET, WHAT SHOULD I DO?

The Bee Cozy can be hung to dry during the summer. Hang the Bee Cozy so the seam is vertical to the ground. Any moisture can drip-dry from the inside. Once dry, roll and store.

WHAT IS THE BEST WAY TO STORE?

Start by rolling and compressing the air out of your Bee Cozy; hold it in place with elastics or strings. Then store in dry location. If your Bee Cozy is wet after winter, hang to dry with seams vertical to the ground before storing.

Winter Protection

AT WHAT TEMPERATURE SHOULD I WRAP MY BEES?

Protect your winter bees by wrapping when they start to cluster. If you overwinter your bees indoors, you can continue to protect them by wrapping when hives are placed outside in the early spring months to help mitigate the transition.

WHAT PROTECTION DOES WRAPPING PROVIDE, AND HOW DO I CALCULATE THE RATE OF HEAT LOSS?

IMPERIAL UNITS (UNITED STATES)

So let’s say there is a wall that contains R-10 insulation, and the wall measures 8 feet high by 10 feet long, or 80 square feet. It is 70°F indoors and 30°F outdoors, or a 40°F temperature difference. The calculation looks like this:

80 square feet * 40°F difference / 10 (R-10 insulation) = 320 BTU’s

METRIC UNITS (CANADA EUROPEAN UNION)

Calculation shown using °C, meters, SI R-values and watts.

Let’s say there is a wall 2.4 meters high and 3 meters wide (7.2 square meters). The outside temperature is -1 °C, while the inside temperature is 21° C (22°C temperature difference), and the insulation is SI R-1.8. The calculation looks like this:

7.2 square meters * 22°C difference / 1.8 (SI R-1.8) = 88 watts

(If you multiply watts by 3.4 you get approximate BTU’s)

In other words, you would need a heater producing 320 BTU’s to compensate for the heat loss through that wall, and that heater would be running continuously.

BEE COZY ON A BEEHIVE EXAMPLE

A standard Langstroth beehive is 0.23 square meters and the outside ambient temperature is -30ºC (-22ºF) while the cluster inside the hive is working to keep the temperature at a balmy 27°C (81ºF). The outside vs. inside temperature difference is 57. A Bee Cozy Winter Hive Wrap contains SI R-1.4 (R-8) insulation and a beehive has approximately SI R-0.13 (R-0.71)1. The equation looks like:

0.23 x 57 / (1.4 + 0.13) = 8.6 watts

(If you multiply watts by 3.4 you get approximate BTU’s and vice-versa)

In other words, you would need a heater producing, or the bees will need to work to heat the hive, 29 BTU’s to compensate for the heat loss through the walls.

Whereas if there is no insulation on the beehives, the bees will need to work to compensate for 343 BTU’s.

1 http://www.backyardhive.com/articles_on_beekeeping/articles_on_beekeeping/overwintering_bees_with_our_insulating_panels/

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