TRI-BUILT® CONTRACTOR GRADE 15 is the best synthetic underlayment to bridge the value added performance of synthetic underlayment with the cost of #15 roofing felt. TRI-BUILT® CONTRACTOR GRADE 15 provides the synthetic features you demand for fast and simple installation and robust performance under asphalt shingle roofing. Manufactured from 100% synthetic materials, TRI-BUILT® CONTRACTOR GRADE 15 is the engineered solution that finally offers the performance you need, at a price competitive with #15 felt.

TRI-BUILT® provides quality residential and commercial building materials that deliver professional results. By focusing on the professional contractor, TRI-BUILT® has become a recognized and trusted leader in the construction industry. From roofing and siding materials, windows, coatings, and more, TRI-BUILT® is a name you can trust at a competitive price.