A. With proper care, a concrete birdbath will give you and your birds many years of enjoyment. While concrete withstands sun, rain, and wind beautifully, freezing weather is its main enemy. Concrete is a porous material, and if water seeps into the pores and freezes, it expands, causing small cracks.
You can take the following precautions to protect your concreate birdbath:
- Once a year, seal your bath with a non-toxic (water-based) concrete sealer. This will keep most water from seeping into the bath.
- In freezing weather, you have three options:
1) You can play it safe and bring your birdbath inside where it will be dry.
2) You can empty the birdbath and cover it so that water doesn't collect in the bowl and freeze. If the bath has absorbed water, it could still crack when temperatures are below freezing.
3) You can put a birdbath heater in the bath to keep the water from freezing. The heater must be powerful enough to keep the whole bath from freezing. If you lose power, however, the birdbath could crack!
Frankly, I'd bring the birdbath inside, especially if you'd be greatly disappointed if it cracked. Put a Wild Birds Unlimited Heated Birdbath in its place to provide an open source of water all winter long.
Provided by Wild Birds Unlimited - Bend OR.