(a) No contract for the construction of, addition to, or repair of any facility, the cost of which is borne by the state or any department, agency, commission, authority, or political subdivision thereof, shall be let unless the contract contains a stipulation therein providing that the contractor or any subcontractor shall use exclusively Georgia forest products in the construction thereof, when forest products are to be used in such construction, addition, or repair, and if Georgia forest products are available.

(b) This Code section shall not apply when in conflict with federal rules and regulations concerning construction.