Freezing temperatures and the hot sun affect concrete birdbaths – if you leave yours in the elements without a sealant you will likely get pitting and cracking.
Sealing the surface with a non-toxic sealant helps your birdbath to be less porous so it holds water well and limits the freeze-thaw effects.
Of course, we want a sealant that is totally non-toxic to the birds and doesn’t leach any chemicals into the water. It’s also important to have a sealer that is safe for the humans who are applying it.
This article outlines one truly non-toxic, no VOC, natural, non-leaching option that is safe for birds and humans, as well as one synthetic option.
These sealants work on stone/rock, terra-cotta birdbaths as well. The first option works on metal birdbaths.[Read more…] about Non-Toxic Sealants for Birdbaths (Concrete, Terra-Cotta, Stone & Metal)