Holly, We have practically all shade in our back yard. But in the Spring, that area gets some very nice sunshine.By the time the trees fill out, it is pretty dense shade from the forest and the neighbor, not to mention our own trees in the back yard.. But we think with a bit of added help that shade might help protect the poly carbonate panels. The average life span seems to be 4 years in full sun and windy conditions. I'm shooting for 10 years in the shade with the help of a coat of UV spray. Our main use for the GH is for winter plant protection. And maybe a writer home for the turtle.