Vinyl-siding-weight-per-square-foot, calculating the quantity of vinyl siding needed is like calculating flooring, you will need to multiply the wall height by the length of each wall to come up with the needed amount of square footage.. Generic vinyl siding product selection and description vinyl siding is used as an exterior wall finish on new and renovated construction. since its introduction in the 1960s, vinyl siding has become the most popular wall finish for new construction., your question cannot be answered. a square foot (length x width) of aluminum must have thickness, i,e, a third dimension. aluminum has a density of 2.7g/ml i.e. mass/unit volume . if you supply the thickness measurement we would have the volume of your piece of aluminum and, using the density given above calculate the weight.