Independent roots. Lasting ambition.
Behind every roof.
A company that cares.
We are Interlock® — a family-owned aluminum roofing manufacturer, founded in Delta, British Columbia, in 1998.
Get to know Interlock
01 / Our story
A long-term view.
From the beginning.
A roof is a significant decision. We believe the company behind it should be just as considered as the material you choose.
Ivor Wenzel founded Interlock Roofing in 1998 in Delta, British Columbia. Today, we continue to design and manufacture aluminum roofing here, serving homeowners across Canada and the United States.
Interlock Roofing Ltd. operates under parent company I.E.L. Manufacturing Ltd. President & CEO Mark Wenzel leads the company today.
See Interlock on real homes02 / Inside Interlock
Material. Finish.
The complete system.
The profile catches your eye. The details help you make an informed choice — from the aluminum and finish to the installation requirements.
Start with aluminum
Explore our roofing systems and the architectural character of each profile.
Discover metal roofing 02Understand the finish
Get to know the Alunar® Coating System and the available colors.
Explore Alunar® 03Look at the details
Review installation manuals and discuss your roof’s requirements with your installer.
View installation manuals03 / People & continuity
Know who stands behind it.
Our founding story and our leadership today.
Ivor Wenzel
Founded Interlock Roofing in 1998 in Delta, British Columbia, establishing the company’s focus on long-term aluminum roofing solutions.
Mark Wenzel
Leads Interlock Roofing today, continuing the family-owned company’s work in roofing design and manufacturing.
04 / Evidence you can explore
Confidence starts
with the details.
Specifications should answer questions. These are the documents to read before making your decision.
Product evaluations
Read ICC-ES ESR-1790 and applicable product approvals, including their conditions and limitations.
Explore evaluationsPerformance testing
Explore published impact and wind testing. Match the report to the roofing profile and assembly you are considering.
Read testing reportsCoatings & color
Learn about the Alunar® Coating System and consult CRRC listings for the performance of specific roof colors.
Explore the finishWarranty in writing
Review the Lifetime Limited Warranty, transfer provisions, eligibility requirements and exclusions before you choose.
Read warranty termsCheck CRRC-rated roof colors. Ratings and approvals apply to specific products and roof assemblies. A Class A fire rating is available with qualifying assemblies; confirm the requirements for your project in the applicable documentation.
05 / The collection
Five profiles.
Your point of view.
Discover the look that belongs on your home, then explore its specifications, colors and installation details.
06 / Beyond the roof
Homes are part
of something bigger.
Our commitment extends to the communities where our customers and team members live and work.
Contributing positively to those communities is part of our company mission, alongside product improvement, education and a safe working environment.
For a closer look at our work, explore completed projects and hear directly from homeowners.
07 / A few helpful answers
About Interlock,
at a glance.
Who is Interlock Roofing?
Interlock Roofing Ltd. is a family-owned manufacturer of aluminum roofing systems, founded in 1998 by Ivor Wenzel. Headquartered in Delta, British Columbia, it serves homeowners across Canada and the United States and operates under parent company I.E.L. Manufacturing Ltd.
Where are Interlock roofing systems manufactured?
Interlock manufactures its roofing systems at its facility in Delta, British Columbia, Canada. The company’s headquarters are at 9969 River Way, Delta, BC V4G 1M8.
Who leads Interlock today?
Mark Wenzel is President and CEO. Ivor Wenzel founded the company in 1998.
What types of metal roofing does Interlock make?
The five aluminum roofing profiles are Slate, Cedar Shingle, Shake, Mediterranean Tile and Standing Seam. Each profile has its own design, installation requirements and available finishes.
Where can I verify product ratings and warranty coverage?
Interlock publishes testing reports, product evaluations, installation manuals and warranty information on this website. Ratings depend on the specific product, roof assembly, finish and installation. Consult the applicable documents and your installer for your project.
Let’s talk about your home
Meet the company.
Plan your next roof.
Start with a conversation about your home, your priorities and the possibilities.
Request a free consultationInterlock Roofing Ltd.
9969 River WayDelta, BC V4G 1M8
Canada1-866-733-5811Find your local service area