A portion of the building products we produce or distribute, including OSB, plywood, and lumber, are commodities that are widely available from other manufacturers or distributors with prices and volumes determined frequently in an auction market based on participants' perceptions of short-term supply and demand factors. At times, the price for any one or more of the products we produce or distribute may fall below our cash production or purchase costs, requiring us to either incur short-term losses on product sales or curtail production at one or more of our manufacturing facilities. Therefore, our profitability with respect to these commodity products depends, in significant part, on effective facilities maintenance programs, and on managing our cost structure, particularly raw materials and labor, which represent the largest components of our operating costs. Commodity wood product prices have historically been volatile in response to economic uncertainties, industry operating rates, supply-related disruptions, transportation constraints or disruptions, net import and export activity, inventory levels in various distribution channels, and seasonal demand patterns.
Demand for the products we manufacture, as well as the products we purchase and distribute, is correlated with new residential construction, residential repair-and-remodeling activity and light commercial construction in the U.S. New residential construction activity has historically been volatile with demand for new residential construction influenced by seasonal weather factors, mortgage availability and rates, housing affordability constraints, unemployment levels, wage growth, household formation rates, domestic population growth, immigration rates, residential vacancy and foreclosure rates, demand for second homes, consumer confidence, and other general economic factors. Furthermore, changing demographics could impact product consumption and demand, including urbanization compounding issues around affordability, increasing importance of multi-family housing, declining size of single-family entry-level housing, increasing proportion of homes in warmer and/or coastal areas using slab-on-grade construction, reduced birthing statistics, and changing baby boomer needs freeing up housing capacity.
Industry supply for the products we produce and distribute is influenced primarily by price-induced changes in the operating rates of existing facilities, but is also influenced over time by the introduction of new product technologies, capacity additions and closures, the restart of idled capacity, and log availability. The balance of supply and demand in the U.S. is also heavily influenced by imported products, principally from Canada and South America.
We have very limited control of the preceding, and as a result, our profitability and cash flow may fluctuate materially in response to changes in the supply and demand balance for our primary products.