a stainless steel film will be easy to keep clean and won't do much damge to the wall when removed. http://www.amazon.com/Instant-Appliance-Stick-Stainless-Steel/dp/B00BAUPS9M
John,
Surrounding trees should be trimmed back and prepared to handle the snow load.
Make sure windows and doors are caulked.
Clear items away from the side of the that could trap snow drifts and allo ... read more