CertainTeed RoofRunner 48-in x 250-ft (937.5-sq ft) Synthetic Roof Underlayment Secure Mail Delivery Q: Where should the rubber

Q: Where should the rubber side face during installation

It’s an unapologetically hardworking piece that elevates everyday organization to luxe efficiency

93 Manufacturer Warranty 5-year color and manufacturer defect

Easy Setup: Uses standard 1/2-in plumbing connections

CertainTeed RoofRunner 48-in x 250-ft (937.5-sq ft) Synthetic Roof Underlayment Secure Mail Delivery Q: Where should the rubberRoofRunner Synthetic Roof Underlayment, 48 in x 250 ft CertainTeed RoofRunner is a lightweight, synthetic polymer based roofing underlayment for use under asphalt shingles. Its scrim reinforced construction and special top surface provide excellent wet and dry slip resistance while delivering durable, water resistant protection for roof decks. Key Features: Lightweight Synthetic Build: Polymer based, scrim reinforced sheet outperforms traditional felt