The average cost to apply sealant for bathroom leaks is approximately $5 to $15 per tube (3-5 ounces), translating to $80 to $240 per pound when extrapolated. This estimate assumes standard silicone or epoxy sealant and DIY application.

The cost per pound is derived from the price per tube divided by the volume in ounces, then scaled to 16 ounces (1 pound). For example, a $10 tube covering 3 ounces costs $3.33 per ounce, totaling $53.33 per pound. However, bulk purchases (e.g., 10 tubes for $50) reduce costs to $31.25 per pound. Labor costs for professional installation may add $50 to $200, depending on complexity. According to the Home Depot 2023 pricing report, a 10-ounce tube averages $8, yielding $128 per pound. The EPA notes that sealant durability (5-10 years) and material quality (food-grade silicone vs. industrial epoxy) significantly influence long-term value. Variables like regional supply chain delays (e.g., a 2022 study by the National Association of Home Builders found a 30% price surge post-pandemic) and disposal fees (up to $20 for hazardous waste) further affect total expenses. Thus, while the per-pound metric is theoretical, it helps contextualize upfront and lifecycle costs for budgeting.