Coastal Roofing Supply

Roofing Underlayment Distributor

Roof underlayment acts as water barrier installed underneath the metal roofing system. Essentially, it is a roof underneath the roof. It protects your roof from condensation that may form underneath the metal due to the differences in temperatures in the attic and outside.

Synthetic underlayment became popular for use in metal roofing systems because of its strength and water barrier properties.


  • TITANIUM® UDL-25 PLUS Underlayment

    TITANIUM® UDL-25 PLUS

    TITANIUM® UDL-25 PLUS is a highly engineered coated woven synthetic material that offers a reliable secondary layer of protection under all types of primary sloped roofing material.

  • TITANIUM® UDL-30 Underlayment

    TITANIUM® UDL-30

    With TITANIUM's unique patented SURE-FOOT™ walking surface, 6 month UV exposure and all temperature performance rating, your jobs will stay on track through all types of weather conditions.

  • TITANIUM® UDL-50 Underlayment

    TITANIUM® UDL-50

    TITANIUM® UDL-50 is a tough, robust Commercial Grade underlayment for demanding, premium roofing applications.

  • Polyglass Special Roofing Products

    TITANIUM PSU-30

    TITANIUM® PSU-30 is the only modified rubberized asphalt PEEL & STICK with a tough, rugged surface AND the Roofing Industries only SELF-SEALING lap system!



Questions? Thinking of Building? Want to Know More?

Please contact Coastal Roofing Supply today for more information on our products and services!

Roofing Products

  • Metal Roof

    Metal Tile, 5v Crimp Panel, Standing Seam Panel, Mechanically Seamed, Snap Lock and more

    Learn More

  • Roof Shingle

    Residential & Commercial Shingles: Timberline Architectural, 3-Tab shingles, Premium, Berkshire, & Woodmoor

    Learn More

  • Concrete Roof Tiles

    Bella high S, Estate S concrete tile, Valencia Spanish S, Bermuda flat tile

    Learn More

  • Waterproofing

    Sustainable roofing and waterproofing system, durable, clear protective

    Learn More

  • Underlayment

    High performance, easy-to-apply, economical

    Learn More

  • Tapered Insulation

    Flat roof insulation, Tapered insulation, Nailable insulation

    Learn More

  • Roof Coatings

    Reflective Coatings, Asphalt Roof Coatings, Adhesives, Primers

    Learn More

  • Ventilation

    Residential and commercial roof ventilation, Attic vents, Solar fans.

    Learn More

  • Skylights

    High quality skylights offering natural lighting solutions to your home or

    Learn More

  • Roofing Fasteners

    Fastening systems for commercial roofing and membrane attachment.

    Learn More