Let’s get to work
Fireproof Panels. Mold-Proof Confidence.
Oak Source Materials manufactures ICC-certified magnesium oxide panels for demanding construction—walls, roofs, subfloors, and SIP systems engineered to be noncombustible, mold- and pest-proof, and fire-rated for up to two hours in large-scale projects.
Resilient Construction
OakSource Materials International (OMI) is redefining the standards of modern construction through climate-resilient, energy-efficient building technologies designed to protect people, property, and the planet. Our mission is rooted in creating Superior Building Solutions that balance strength, safety, and sustainability — without sacrificing affordability or accessibility.
As climate events grow more frequent and severe, from hurricane-force winds and inland flooding to fires and tornadoes, the need for durable, adaptable structures has never been greater. OMI responds to that challenge with high-performance materials and construction systems engineered to endure extreme conditions while enhancing occupant comfort and indoor air quality. Every solution we deliver is developed with one clear purpose — to safeguard lives, reduce long-term maintenance costs, and contribute to a healthier built environment.
Our team collaborates closely with architects, engineers, and developers to integrate these advanced materials into projects across residential, commercial, and institutional sectors. By emphasizing energy efficiency and long-term resilience, OMI helps builders meet modern code requirements while advancing environmental responsibility. We believe construction innovation isn’t just about surviving climate risks — it’s about designing structures that thrive in them.
Unmatched Excellence
Precision-Engineered Panels for Modern Construction
Simplifying Construction Nationwide.
Wherever your project is, Oaksource ICC certified MgO panels are ready to deliver smoother installs and superior performance. We ship our ICC certified wall, floor, and SIP panels across the United States — yes, coast to coast.
Environmentally Friendly
Crafted from natural magnesium sulfate, our panels are manufactured using a low-energy process, making them an eco-conscious and sustainable building solution.
Built for Builders
Lightweight yet incredibly strong and durable, our panels offer smooth finishes, exceptional screw and nail holding strength, and can be easily scored and cut on-site.
Insect-Resistant
100% inorganic and free from any organic content, our panels do not attract termites, carpenter ants, or other wood-damaging insects.
Weather-Ready
Tested for extreme freeze/thaw conditions, our panels withstand severe hot and cold environments — ideal for year-round construction in any climate.
Fire-Resistant
ASTM-tested and A1 fire-rated, our panels provide a reliable fire-resistant option for both residential and commercial construction projects.
Moisture-Resistant
Engineered to hold its shape, our product resists warping, swelling, and delamination when exposed to short-term moisture. (Note: extended exposure is not recommended.)
Safe for Indoor Air Quality
Free from formaldehyde, fly ash, crystalline silica, and toxic chemicals, our panels are ideal for individuals with asthma, allergies, or chemical sensitivities.
Mold & Mildew Resistant
Thanks to its moisture resistance and antimicrobial properties, our panels naturally resist mold, mildew, rot, and fungal growth.
Smart, Strong, and Energy-Efficient
Oak Source partners with SIPs Madison to deliver high-performance structural insulated panel systems that combine our magnesium oxide boards with advanced insulation cores — providing faster installation, superior fire safety, and unmatched thermal efficiency for modern construction.
SIP Fabrication & Installation Support
Our technical team provides SIP fabricators and builders with design, cutting, and installation assistance to ensure precision, compliance, and efficiency. We help simplify complex builds and accelerate timelines from concept to completion.
Built for Projects That Matter
Trusted by Developers, Architects & Agencies Nationwide
From workforce housing and multifamily builds to federal and municipal projects, Oak Source Materials supports large-scale developments where safety, compliance, and longevity are critical. Our ICC-certified panels are engineered to meet demanding real-world specifications.
Multifamily Housing Projects
Durable, fire-rated materials for multi-unit developments.
Ready to Build with Confidence?
Oak Source Materials delivers certified performance that builders, developers, and architects can trust. Our magnesium oxide panels and SIP systems are engineered for projects where safety, strength, and efficiency matter most.
Let’s bring reliability to your next build — whether it’s workforce housing, a government facility, or a multifamily development. Share your project details today and connect with our expert team for material guidance and distributor support.