Ventilate: An insulation contractor can calculate the ventilation your crawl space needs and will cut in new vents as required. Seal the subfloor: Holes for electrical wiring and plumbing should be sealed with spray foam insulation. Insulate plumbing pipes and HVAC ducts to prevent heat loss and freezing.
Definition of metal 1) An element below and to the left of the stepwise division (metalloids) in the upper right corner of the periodic table; about 80% of the known elements are metals. Was this definition helpful? Tweet
2. An alloy, such as steel or bronze, made of two or more metals. Usage We think of metals as hard, shiny materials used to make things like paper clips and cars. But for chemists, a metal is a chemical element that loses electrons in a chemical reaction.sage We think of metals as hard, shiny materials used to make things like paper clips and cars. But for chemists, a metal is a chemical element that loses electrons in a chemical reaction.