Polyurethane Sealant: Complete Buying Guide 2026
Polyurethane sealant is a premium flexible caulk that bonds to virtually all construction materials. Its exceptional elongation allows it to stretch and compress with building movement, making it ideal for expansion joints and high-movement applications. In 2026, polyurethane sealant prices average $8.50 per 10-oz tube, with a typical range of $5.00 to $14.00 depending on your region, supplier relationships, and order quantity.
When budgeting for a project using polyurethane sealant, factor in approximately 10% additional material for waste, plus labor costs averaging $4.00 per 10-oz tube for professional installation. A typical project using this material runs approximately $250 including both materials and labor.
With an expected lifespan of 20 years, polyurethane sealant represents a cost of approximately $0.43 per 10-oz tube per year of service life. While the initial cost is competitive, budget for eventual replacement or refinishing.