Is there any material that I cant use with preserved wood?
Do not use preserved wood in direct contact with aluminum; when using preserved wood in close proximity to aluminum products, such as aluminum siding, flashing, and door and window frames, a 1/4″ minimum space must be allowed for between the preserved wood and the aluminum products. Polyethylene or nylon spacers can be used to maintain the 1/4″ spacing. Another option is to use a polyethylene barrier, with a minimum thickness of 10 mils, between the preserved wood and the aluminum product to prevent direct contact of the wood and the aluminum.