I grew up in a house with a corrugated iron roof and loved hearing the sound the rain made on it. It’s a familiar sound and a familiar memory and I used it as the basis for an idea developed below.
Like the wind picks at the corrugated iron roof, this memory is a scab I have picked at for years and years.
I have scratched and scratched.
Sometimes out of curiosity, out of a need to understand; to comprehend how we failed to relate to one another. Or out of frustration and anger at failed intimacy.
I retreat into the solitude of the bedroom, into a book and a pen and bury myself beneath headphones where the music thrashes and yells and pummels.
And like the wind, I return to pick at the scab of memory.
A Fullness in Brevity - Adam Byatt 
I certainly like the idea of a corrugated iron roof. It strikes a chord with my idea of growing up.
For me, it brings home the idea of family and love.