Sometimes members of the starling family have historically been called grackles. Tristram's starling is sometimes known as Tristram's grackle, and the hill mynas in the genus Gracula have also been called grackles.ometimes members of the starling family have historically been called grackles. Tristram's starling is sometimes known as Tristram's grackle, and the hill mynas in the genus Gracula have also been called grackles.
Waterproofing an old limestone foundation from the exterior with âClosed Cellâ spray polyurethane foam provides a water tight seal from the outside.
How much does spray foam insulation cost? Short answer: about 3x â 4x the cost of fiberglass insulation. But, spray polyurethane foam does something that standard fiberglass doesnât do, and thatâs provide a continuous air barrier. Keep in mind that the prices below are budgetary, and will vary job-to-job.