EX-21.1 4 ibp-20241231xex211xsignifi.htm EX-21.1
Exhibit 21.1
Significant Subsidiaries of Installed Building Products, Inc.

Name | Jurisdiction of Organization
A+ Insulation of Kansas City, LLC | Delaware
ABS Coastal Insulating Company, LLC | South Carolina
ABS Insulating Company, Inc. | North Carolina
Accurate Insulation LLC | Maryland
Accurate Insulation of Colorado, LLC | Delaware
Accurate Insulation of Delaware, LLC | Delaware
Accurate Insulation of Upper Marlboro, LLC | Delaware
Advanced Fiber, LLC | Delaware
Advanced Insulation, LLC | Delaware
Alert Insulation of California, LLC | Delaware
All Construction Services, LLC | Delaware
All in One & Moore Building Systems, LLC | Delaware
Alpha Insulation & Water Proofing, Inc. | Texas
Alpine Construction of Colorado, LLC | Ohio
Alpine Insulation I, LLC | Delaware
AMD Distribution Services, LLC | Delaware
American Insulation & Energy Services, LLC | Alabama
Anchor Insulation, Inc. | Rhode Island
Apple Valley Insulation, a BDI Company, Inc. | California
Aster Contractors Holdings, LLC | Delaware
Astro Insulation of Illinois, LLC | Delaware
Baytherm Insulation, LLC | Delaware
BDI Insulation of Idaho Falls, Inc. | Idaho
BDI Insulation of Salt Lake, L.L.C. | Utah
Big City Insulation, Inc. | Utah
Big City Insulation of Idaho, Inc. | Idaho
B-Organized Insulation, LLC | Delaware
Broken Drum of Bakersfield, Inc. | California
Broken Drum Insulation Visalia, Inc. | California
Builders Installed Products of Maine, LLC | Delaware
Builders Installed Products of New Hampshire, LLC | Delaware
Builders Installed Products of New York, LLC | Delaware
Builders Installed Products of Vermont, LLC | Delaware
Central Aluminum Supply Corporation | New Jersey
Central Aluminum Supply of North Jersey, L.L.C. | New Jersey
CFI Insulation, Inc. | Tennessee
CLS Insulation, LLC | Delaware
CMSC Illinois, LLC | Delaware
Combee Insulation of Florida, LLC | Delaware
Cornhusker Insulation, LLC | Delaware
C.Q. Insulation, Inc. | Florida
Division 7 8 9 Supply, LLC | Delaware
East Coast Insulators II, LLC | Delaware

Eastern Contractor Services Limited Liability Company | New Jersey
Ecologic Energy Solutions, LLC | Delaware
Edwards/Mooney & Moses, LLC | Delaware
Elite Spray Foam of Las Vegas, LLC | Delaware
EMPER Holdings, LLC | Delaware
Energy Savers of Louisville, LLC | Delaware
Expert Insulation of Minnesota, LLC | Delaware
FiberClass Insulation, LLC | Delaware
First State Building Products, LLC | Delaware
5 Star Building Products LLC | Utah
5 Star Building Products of Southern Utah, LLC | Utah
Fort Wayne Urethane, LLC | Delaware
Garage Door Systems, LLC | Delaware
Gold Insulation, Inc. | Delaware
Gold Star Insulation, L.P. | Delaware
Green Star Plus Insulation, LLC | Delaware
G-T-G, LLC | South Carolina
Gulf Coast Insulation, LLC | Delaware
Hinkle Insulation & Drywall Company, Incorporated | Texas
Horizon Electric Services, LLC | Delaware
IBHL A Holding Company, Inc. | Delaware
IBHL B Holding Company, Inc. | Delaware
IBHL II-A Holding Company, Inc. | Delaware
IBHL II-B Holding Company, Inc. | Delaware
IBP Aircraft, LLC | Delaware
IBP Arctic Express, LLC | Delaware
IBP Asset, LLC | Delaware
IBP Corporation Holdings, Inc. | Delaware
IBP Express Logistics, LLC | Delaware
IBP Exteriors, Inc. | New Jersey
IBP Holdings, LLC | Delaware
IBP Holdings II, LLC | Delaware
IBP Legacy Glass & Supply, LLC | Delaware
IBP Logistics, LLC | Delaware
IBP Longway Trucking, LLC | Delaware
IBP of Mansfield, LLC | Delaware
IBP of Oklahoma, LLC | Delaware
IBP of San Antonio, LLC | Delaware
IBP of Toledo, LLC | Delaware
Installed Building Products, LLC | Delaware
Installed Building Products Distribution Services, LLC | Delaware
Installed Building Products of Fort Myers, LLC | Delaware
Installed Building Products of Houston, LLC | Delaware
Installed Building Products of Jacksonville, LLC | Delaware
Installed Building Products of Maine, LLC | Delaware
Installed Building Products of Miami, LLC | Delaware
Installed Building Products of Missouri, LLC | Delaware
Installed Building Products of Tampa, LLC | Delaware
Installed Building Products of Utah, LLC | Delaware

Installed Building Products of West Palm, LLC | Delaware
Installed Building Products – Panhandle, LLC | Delaware
Installed Building Products – Portland, LLC | Oregon
Installed Building Solutions II, LLC | Delaware
Insulation Contractors of Washington, LLC | Delaware
Insulation Northwest, LLC | Delaware
Insulation Wholesale Supply, LLC | Nevada
InsulVail, LLC | Colorado
I.W. International Insulation Incorporated | Washington
Key Insulation of Austin, LLC | Delaware
Key Insulation of San Antonio, LLC | Delaware
Lakeside Insulation, LLC | Delaware
Layman Brothers Insulation, LLC | Delaware
LKS Transportation, LLC | Delaware
Loveday Insulation, LLC | Delaware
Lynch Insulation of Montana, LLC | Delaware
M&D Insulation, LLC | Delaware
MAP Installed Building Products of Sagamore, LLC | Delaware
MAP Installed Building Products of Seekonk, LLC | Delaware
Marv’s Insulation, Inc. | Idaho
Metro Home Insulation, LLC | Delaware
Mid-Atlantic Insulation, LLC | Delaware
MIG Building Systems, LLC | Delaware
MIG Building Systems of East Syracuse, LLC | Delaware
Momper Insulation of Crown Point, LLC | Delaware
Momper Insulation of Elkhart, LLC | Delaware
Momper Insulation of Fort Wayne, LLC | Delaware
Norkote of Washington, LLC | Delaware
Northwest Insulation, LLC | Delaware
OJ Insulation Holdings, Inc. | Delaware
OJ Insulation, L.P. | Delaware
OJ Specialty Contracting, LLC | Delaware
Orr Industries of Pennsylvania, LLC | Delaware
Pacific Partners Insulation North, a BDI Company, LLC | Washington
Pacific Partners Insulation South, a BDI Company, LLC | Washington
Parker Insulation and Building Products, LLC | Texas
PEG, LLC | Texas
Pisgah Insulation and Fireplaces of NC, LLC | North Carolina
Premier Building Supply, LLC | Utah
Premier Building Supply SLC, LLC | Utah
Rocket Insulation, LLC | Delaware
Royals Commercial of Maryland, LLC | Delaware
SCE of Chicago, LLC | Delaware
Sierra Insulation Contractors II, LLC | Delaware
Southern Insulators, LLC | Delaware
Spec 7 Insulation Co., LLC | Colorado
Suburban Insulation, Inc. | Pennsylvania
Superior Insulation, LLC | Delaware

Tatum Insulation III, LLC | North Carolina
TCI Contracting, LLC | Georgia
TCI Contracting of Charleston, LLC | Delaware
TCI Contracting of Hilton Head, LLC | Delaware
TCI Contracting of Kentucky, LLC | Delaware
TCI Contracting of Memphis, LLC | Delaware
TCI Contracting of Nashville, LLC | Delaware
Thermal Control Insulation, LLC | Ohio
Therm-Con of Tennessee, LLC | Delaware
Tidewater Insulators, LLC | Delaware
Town Building Systems, LLC | Delaware
Trademark Roofing Company, Inc. | North Carolina
Trademark Seamless Gutter Company, Inc. | North Carolina
Tri-County Building Products of California, LLC | Delaware
U.S. Insulation Corp. | Connecticut
WeatherSeal Company, LLC | Delaware
Wholesale Insulation Supply of Minnesota, LLC | Delaware
Wilson Insulation Company, LLC | Georgia