Where I am most houses use vinyl siding, The woodpeckers bang away on them.
I've heard that they use the noise as a mating call.

cb

"notbob" wrote in message
...
On 2011-10-15, wrote:

aluminum. No woodpeckers since.

Don't let your guard down quite yet. We had a whacky wookpecker
hammer away on our alum TV antenna mast for 3 wks before finally
packing it in.

nb