Quad-C Management Acquires SEI Group LLC from Narrow Gauge Capital

SEI Group Acquires Energy Conservation Insulation Company (ECI)

May 5, 2022

Building Products

SEI Group LLC, a portfolio company of Quad-C Management, has acquired Energy Conservation Insulation Company (ECI), a Bend, Oregon-based residential and light commercial insulation services provider. The transaction expands SEI's geographic footprint in Oregon as part of its ongoing roll-up strategy following a 2021 recapitalization with Quad-C.

SEI Group Acquires Carolina Gutter Company of SC, LLC

March 5, 2024

Building Products

SEI Group LLC, a Quad‑C Management‑backed installer of insulation and specialty building products, acquired the assets of Carolina Gutter Company of SC, LLC, a Charleston-based installer of gutters, garage doors and after-paint products. The acquisition expands SEI’s local presence in the Charleston market as part of its ongoing rollup strategy under Quad‑C ownership; terms were not disclosed.

SEI Group Acquires Sacramento Insulation, Inc.

February 19, 2025

Building Products

SEI Group LLC, a Quad‑C Management‑backed installer of insulation and specialty building products, has acquired Sacramento Insulation, Inc., a Sacramento, California installer of fiberglass, spray foam and other insulation products. The add‑on expands SEI's footprint into California and bolsters its presence in single‑family, multi‑family and light commercial new construction markets; terms were not disclosed.

SEI Group Acquires G5 Enterprises

December 5, 2023

Building Products

SEI Group LLC, a Quad-C Management-backed installer of insulation and building products, acquired the assets of G5 Enterprises Inc., a Nixa, Missouri-based installer operating nine branches across Missouri and Arkansas. The add-on expands SEI's geographic footprint into the Midwest and South Central U.S.; financial terms were not disclosed.

SEI Group Acquires Coastal Insulation & Fireplaces and Cool Insulation

February 2, 2022

Building Products

SEI Group LLC, a Quad‑C Management‑backed platform, has acquired Coastal Insulation & Fireplaces (Fredericksburg/Virginia Beach, VA) and Cool Insulation Company (Austin, TX). The deals expand SEI's footprint in high-growth U.S. markets and add to its insulation and building‑products installation capabilities; terms were not disclosed.

SEI Group Acquires Quality Insulation & Roofing, Finish Line Supply and Affordable Energy Services

December 6, 2022

Building Products

SEI Group LLC, a portfolio company of Quad‑C Management, announced the acquisitions of Insulation & Fireplace Services, LLC d/b/a Quality Insulation & Roofing (Conroe, TX), Finish Line Supply, Inc. (Raleigh, NC) and Affordable Energy Services, LLC (Richlands, NC). The deals expand SEI’s geographic footprint across Texas and North Carolina and broaden its insulation, roofing and specialty products installation capabilities; terms were not disclosed.