Built to Defy the Elements
Who We Are
Cardinal Exteriors is a residential and commercial siding, roofing, and window company in Portland Maine, serving Greater Portland and the surrounding towns. Partners Michael McCullum and Robert Milliken are longtime residents of Portland and active community members who value the opportunity to deliver quality products, professional installation, and an enjoyable home improvement experience.
Over 300 projects completed with exceptional quality and care
Decades of expertise in Portland's unique climate and architecture
The Cardinal Code
Mission
To transform the exteriors of homes and commercial properties with durability, style and responsiveness — so every client enjoys both form and function.
Vision
To be the leading exterior specialist in the region, known for reliable installations, quality materials and a customer-first approach.
Our Process
Consultation & Design
We listen to what you want, assess your exterior needs, and propose the right solutions.
Selection & Installation
We guide your product selection and deliver precise installation with expert craftsmanship, lasting quality, and spotless cleanup.
Final Review & Support
We walk you through the finished work, ensure you're thrilled with the result and provide support if you need it in the future.
What Sets Us Apart
Local Expertise
Deep understanding of Portland's architecture, climate, and building standards.
Master Installers
Skilled, certified craftsmen committed to excellence on every project.
Premium Materials
James Hardie, architectural shingles, energy-efficient windows—only the best.
Client Focus
Clear communication and transparency—your satisfaction is our priority.
Ready to Work with Portland's Trusted Exterior Specialists?
Contact us today for a free consultation and discover the Cardinal difference.
Request Free Consultation