COMPANY / EST. 1987
About TorsionCore
Precision hollow door core manufacturing for commercial and residential applications. Built on engineering discipline, maintained certifications, and consistent production quality.
37+
Years in operation
12K
Sq ft manufacturing
4
Core product lines
6
Active certifications
SECTION 01 — COMPANY HISTORY
Built on engineering discipline
TorsionCore was founded in 1987 with a single focus: manufacturing hollow door cores to tighter tolerances than the industry standard. From the beginning, the company invested in precision cell-forming equipment and rigorous in-process quality control rather than competing on price alone.
Over nearly four decades, that focus has expanded into a full product line covering standard, acoustic, and fire-rated cores — each developed in response to specific performance requirements from door manufacturers, architects, and building code demands.
Today TorsionCore operates from a 120,000 sq ft manufacturing facility and supplies hollow door cores to commercial door manufacturers, millwork shops, and specialty fabricators across North America. All products are manufactured and tested in-house.
1987
Founded
TorsionCore established as a specialty hollow core manufacturer serving the Pacific Northwest.
1994
ANSI Certification
Achieved ANSI/WDMA I.S.1A certification across all standard product lines.
2003
Fire-Rated Line
Launched TC-FRC series following UL 10C positive pressure listing.
2011
Acoustic Series
Introduced TC-ACS dense-matrix acoustic core after three years of R&D and ASTM E90 testing.
2018
Capacity Expansion
Expanded manufacturing floor to 120,000 sq ft, doubling production capacity.
2024
Rev. 4 Standards
Released updated engineering documentation and tightened dimensional tolerances across all product lines.
SECTION 02 — MANUFACTURING CAPABILITIES
What we manufacture
CAP-01
Precision Cell Manufacturing
Automated cell-forming lines hold ± 1/32" dimensional tolerances across all nominal thicknesses. Cell geometry is verified at every production stage.
CAP-02
Face Bonding
PVA Type I and Type II adhesive bonding lines calibrated to ASTM D3110. Fire-rated assemblies use Type I exclusively.
CAP-03
Acoustic Engineering
In-house acoustic lab for STC and OITC measurement. Dense-matrix cell configurations developed and validated against ASTM E90.
CAP-04
Fire-Rated Assembly
Dedicated fire-rated production line. UL Listed file maintained with annual follow-up inspections. Positive pressure tested to UL 10C.
CAP-05
Custom Profiles
Non-standard widths, heights, and thicknesses available on request. Engineering team works directly with door manufacturers on custom specifications.
CAP-06
Quality Assurance
Every production run sampled and tested against dimensional, density, and bonding specifications before shipment. Full traceability maintained.
SECTION 03 — QUALITY STANDARDS
Certified to specification
Every TorsionCore product line is manufactured and tested against published industry standards. Certifications are maintained through ongoing production audits, third-party testing, and annual UL follow-up inspections.
Full test reports, CAD drawings, and certification documentation are available on request for architects, specifiers, and code compliance review.
ANSI/WDMA I.S.1A
Heavy Duty GradeAWI Section 1300
Premium / CustomASTM E90
STC 32–38UL 10C
20 / 45 MinASTM D3110
Type I / IINFPA 80
CompatibleWORK WITH US
Ready to specify TorsionCore?
Contact our technical team for spec sheets, custom quotes, or product consultation.