The cost of black fiberglass tissue can vary significantly based on several factors such as the quality, quantity, and the specific project requirements. On average, the material cost alone can range from $1 to $5 per square foot. Installation costs can add another $2 to $10 per square foot, depending on labor rates and complexity. For an accurate estimate, it's best to consult with a local supplier or contractor who can provide a quote tailored to your specific needs. Keep in mind that prices are subject to change and can differ by region and market conditions.