TremLock T-138:

TremLock® T-138 System

Standing Seam Metal Roof System (Shingle Recover)

The TremLock T-138 Shingle Recover System provides a liong-term, economical solution for buiding owners because you can keep your existing shingle roof in place.  The T-138 Shingle Recover System's symmetrical standing seam panel offers many advantages, including: ease of installation, individual panel replaceability and improved weathertightness. This system installs directly over existing shingles without tear off or underlayment. Patented clips create an energy-saving airspace between the two roofs.

The TremLock T-138 metal roof can also be installed directly on the deck in new construction or for a roof replacement.  Click here to learn about the TremLock T-138 Shingle Recover System; our spec data sheet is here and our installation guide is here.


This system is a 1 3/8” tall, symmetrical panel that is manufactured from 24 or 22 gauge Galvalume®, an aluminum-zinc alloy, Class AZ-50, and roll-formed at the factory or in the field.  Galvalume carries a 25 year warranty against perforation, rupture and structural failure due to exposure to normal environmental conditions. The Galvalume panel is coated with the Kynar 500®/Hylar 5000® paint system.

Roofing & Weatherproofing Peace of Mind

We deliver peace of mind to building owners and facility managers by managing roofing and building life cycles for customers in all industries, including education, healthcare, government, manufacturing and more.

  • Tremco Roofing offers the industry's most comprehensive roofing and weatherproofing solutions for restoration, repair, maintenance, replacement and new construction.
  • WTI (Weatherproofing Technologies, Inc.) provides roofing services, construction management and general contracting.
  • Our Canam Building Envelope Specialists affiliate provides building envelope solutions to eliminate air leaks, improve energy efficiency and reduce costs.


Phone: 1.800.852.6013