Patent ID: 8182928

Claim:
A method of preparing a composite product comprising the steps of: a) providing a finishing layer selected from the group consisting of a wood-plastic composite optionally comprising one or more agents selected from the group consisting of moldicides, water repellents, UV blockers, pigments, fire retardants, wood hardeners and strength enhancers; and a cellulose fiber-reinforced cement material optionally comprising one or more agents selected from the group consisting of moldicides, water repellents, UV blockers, pigments, fire retardants, wood hardeners and strength enhancers; b) providing a second layer comprising one or more biocides or strength enhancers, wherein said second layer 1) contains either a fewer or a greater number of the agents than said finishing layer or said second layer 2) contains either a greater or lesser concentration of one of the agents than said finishing layer; and c) laminating said layers to produce a composite product.