Our Mission in Duluth, Minnesota
Duluth Commercial Exteriors was built to give property owners, facility managers, and families in Duluth, MN (55802, 55803, 55804, 55805, 55806, 55807, 55808, 55810, 55811, 55812) a direct, technically rigorous partner for Duluth Commercial Exteriors. From major commercial complexes in Clough / Rice's Point Port of Duluth Industrial & Maritime Terminal District, Airpark Industrial Park (Cirrus Aircraft / Duluth International Airport Hub), Miller Hill Commercial Corridor, Essentia Health & St. Luke's Medical District, Canal Park & Downtown Waterfront to properties bordering I-35, US-53 (Trinity Rd / Miller Trunk Hwy), MN-61 (London Rd), Garfield Ave, Superior St, Central Entrance, Arrowhead Rd, Haines Rd, Grand Ave (MN-23), every recommendation we issue is grounded in Minnesota statutory law and municipal code.
Local Regulatory & Permitting Alignment
We work directly within the guidelines of Duluth Construction Services & Inspections Division (City Hall, 411 W First St). Located in ASHRAE Climate Zone 7 (Northern Minnesota): requires 60-inch frost footings, extreme 50–70+ psf drifted ground snow load engineering, and high-velocity Lake Superior gale wind uplift & freeze-thaw exterior cladding ratings.
Meet Our Minnesota Technical Review Board
Henrik Sorensson, PE, RRC, REWC
MN Licensed Professional Engineer (PE), IIBEC Registered Exterior Wall Consultant (REWC), NFPA 285 & ASHRAE 90.1 Specialist — 22+ Years Experience
Henrik leads hygrothermal wall modeling, ASTM E1105 curtainwall diagnostics, and ACM/IMP rainscreen engineering for commercial buildings across Duluth and St. Louis County.
David M. Kowalski, CSI-CDT, ABAA
ABAA Certified Air Barrier Specialist, ICRI Concrete/Masonry Restoration Technician, Master Glazing & Sealant Applicator
David oversees brick tuckpointing, precast joint recaulking, EIFS remediation, and high-reach swing-stage operations across Duluth districts including Clough / Rice's Point Port of Duluth Industrial & Maritime Terminal District, Airpark Industrial Park (Cirrus Aircraft / Duluth International Airport Hub), Miller Hill Commercial Corridor, Essentia Health & St. Luke's Medical District, Canal Park & Downtown Waterfront.
claire E. Nordstrom, AIA, LEED AP
Registered Minnesota Architect (AIA), HAAG Building Envelope Inspector, 2024 MN Commercial Energy Code Consultant
Claire manages facade recladding design, Duluth Construction Services & Inspections Division (City Hall, 411 W First St) code approvals, and commercial hail/wind envelope claims throughout Duluth (55802, 55803, 55804, 55805, 55806, 55807, 55808, 55810, 55811, 55812).
Editorial & Technical Fact-Checking Protocol
All 52+ technical guides in our Duluth Knowledge Hub are written by field practitioners and reviewed against current Minnesota Rules (Chapters 1305, 1323, 4714), Minnesota Statutes (Chapters 513, 524, 580, 325N), OSHA 29 CFR 1910 standards, and Duluth municipal ordinances.