American Fenestration Manufacturing Since 1973
Over five decades of specialized craftsmanship, lean manufacturing processes, and comprehensive fenestration solutions serving commercial builders, architects, dealers, and global distributors.
Founded Haverhill, MA • 1973 Five Decades of Industrial Rigor
Coastal Industries Inc. was founded in 1973 by William J. Cunningham Sr. in Haverhill, Massachusetts. Bill gathered comprehensive technical mastery at General Aluminum in Woburn, MA, cultivating long-standing trade partnerships with fenestration pioneers before launching his independent manufacturing facility.
From an initial focus on high-durability storm windows and architectural storm doors, our factory progressively scaled to satisfy commercial demand. Bill welcomed his son Blaise Cunningham and daughter-in-law Linda in 1979, establishing an unwavering multi-generational commitment to American manufacturing standards.
Today, Coastal Industries stands as one of the elite few American manufacturers still operating specialized extrusion assembly lines alongside heavy-duty cast hardware fabrication, delivering resilient fenestration built to endure severe North American climates.
Advanced Production Capabilities & Precision Engineering
While staying true to our roots with storm products, deadlites, and heavy picture windows, our Haverhill production facility has integrated four-point vinyl welders and automated CNC corner cleaners.
Our computerized manufacturing systems process multi-chambered vinyl profiles, low-emissivity argon thermal glass units, and structurally reinforced aluminum assemblies for both new construction projects and large-scale architectural retrofits.
Every fenestration unit undergoes strict dimensional verifications, water-penetration assessments, and structural load evaluations, guaranteeing reliable thermal performance and exceptional life cycles across all installations.
Computerized CNC Processing 
Global Logistics & Trade Supply Scaling Capabilities for Global Trade & OEM Partners
Historically focused on commercial contractors, project developers, and regional distributor partnerships throughout New England, Coastal Industries has evolved into a full-scale fenestration partner capable of handling container-load OEM specifications.
We provide global B2B procurement partners with direct factory pricing, fully customizable glazing configurations, and scalable project engineering support. By eliminating intermediaries, we grant our clients direct communication with the factory floor.
Whether servicing architectural firms requiring custom curve extrusions or wholesale distributors needing reliable delivery cadences, our Haverhill headquarters delivers unmatched stability and consistency.
Why B2B Specifiers Choose Coastal
Strict quality assurance protocols and certified American manufacturing guarantee dependable structural integrity.
Structural Integrity
Heavy-duty multi-chambered vinyl and tempered architectural-grade aluminum engineered to withstand severe wind loads and thermal differentials.
Thermal Performance
Advanced warm-edge spacer systems paired with argon-filled Low-E glazing achieve optimal U-factors and Solar Heat Gain Coefficients (SHGC).
OEM Customization
Tailored sizing, integrated brick moulds, custom grids, multi-track sliding layouts, and architectural coatings matching project blueprints.
Certified Standards
Manufactured under strict compliance guidelines conforming to AAMA/WDMA fenestration performance and energy efficiency specifications.
Continuous Lead Times
Domestic fabrication control enables predictable assembly timelines and systematic supply stability for multi-phase commercial orders.
Dedicated Engineering Support
Direct technical collaboration between project managers, field surveyors, and plant supervisors to solve complex architectural challenges.
Master Technicians & Factory Craftsmanship
Precision equipment is only as good as the master craftsmen operating it. Our dedicated team embodies five decades of bench assembly know-how.
Bench Assembly Team
Coordinated Production
Architectural Joinery
Specialty Configurations
Quality Inspection
Tolerance Verification
Custom Profile Milling
Precision Fabrication
Frame Fabrication
Senior Craftsmanship
Door Mechanics & Hardware
Structural Calibrations
Weatherization Sealing
Dual Barrier Assembly