TremLock T-238:

TremLock® T-238 System

Standing Seam Metal Roof System

With a minimum slope requirement of only ½:12, the TremLock T-238 metal roofing system is ideal for retrofitting over an existing metal roof, re-roofing, and new construction, and is versatile enough to also be used as a wall panel. Retrofitting in particular is easy, fast and cost-effective because the TremLock T-238 metal roofing system can be used on almost any roof slope (high to virtually flat); is designed for a clean and simple installation; and like all TremLock metal roof systems is pre-engineered to provide the perfect fit for leak-free protection and long-term performance, eliminating water infiltration and ensuring a watertight system. Individual panels can be repaired or replaced easily if needed, a feature not found on many competitive systems.

To learn more specifically about how well the TremLock T-238 system works in retrofit applications, click here.  Our spec data sheet is available here and our installation guide can be downloaded here.


This factory roll-formed metal roof system is manufactured from 24, 22 or 20 gauge Galvalume®, an aluminum-zinc alloy meeting ASTM A792, Class AZ-50. 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 Kynar 500®/Hylar 5000®.

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