Capitol Building Supply, Inc.
Selbyville, DE 19975
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Our Story
Capitol Building Supply, Inc. is proud to offer a number of building supply services to professionals in the construction industry. We serve both commercial and residential customers, and offer both on-time jobsite delivery or will call pickup of all of our products.
Our professionals are fully trained and maintain a deep commitment to customer service, safety, and OSHA compliance. Use the links below to learn more about the services, fleet and staff you can find at each of our yard locations:
Commercial delivery
Residential delivery
Fleet capabilities
Knowledgeable professionals
Ordering specialty products
Safety/site reviews
Showrooms and customer pickups
Capitol Building Supply is ready to help you source all the materials you need for your next construction project.
Commercial Experience
Regions & Counties Serviced
- Pennsylvania-Eastern
Delaware All
District Of Columbia All
Maryland All
Pennsylvania 12
- Adams
- Bedford
- Blair
- Cumberland
- Dauphin
- Franklin
- Fulton
- Huntingdon
- Juniata
- Perry
- Somerset
- York
Our CSI Codes
01 60 00.00.01 - Product Requirements
05 01 40 - Maintenance of Cold-Formed Metal Framing
05 06 40 - Schedules for Cold-Formed Metal Framing
05 10 00.00.01 - Structural Metal Framing
05 12 13 - Architecturally-Exposed Structural Steel Framing
05 13 00.00.01 - Structural Stainless-Steel Framing
05 14 13 - Architecturally-Exposed Structural Aluminum Framing
05 40 00.00.01 - Cold-Formed Metal Framing
05 41 00.00.01 - Structural Metal Stud Framing
05 43 00.00.01 - Slotted Channel Framing
05 45 13 - Mechanical Metal Supports
05 45 23 - Healthcare Metal Supports
06 16 13 - Insulating Sheathing
06 16 43 - Gypsum Sheathing
06 16 53 - Moisture-Resistant Sheathing Board
06 16 63 - Cementitious Sheathing
06 26 13 - Profile Board Paneling
07 21 13 - Board Insulation
07 21 13.13 - Foam Board Insulation
07 21 13.16 - Fibrous Board Insulation
07 21 19 - Foamed-in-Place Insulation
07 21 23 - Loose-Fill Insulation
07 21 26 - Blown Insulation
07 21 29 - Sprayed Insulation
07 22 13 - Asphaltic Perlite Concrete Deck
07 22 16 - Roof Board Insulation
07 24 13 - Polymer-Based Exterior Insulation and Finish System
07 24 16 - Polymer-Modified Exterior Insulation and Finish System
07 24 19 - Water-Drainage Exterior Insulation and Finish System
07 91 23 - Backer Rods
08 10 00.00.01 - Doors and Frames
08 50 00.00.01 - Windows
09 20 00.00.01 - Plaster and Gypsum Board
09 21 16 - Gypsum Board Assemblies
09 21 16.23 - Gypsum Board Shaft Wall Assemblies
09 21 16.33 - Gypsum Board Area Separation Wall Assemblies
09 22 16 - Non-Structural Metal Framing
09 22 16.13 - Non-Structural Metal Stud Framing
09 22 26 - Suspension Systems
09 28 13 - Cementitious Backing Boards
09 28 16 - Glass-Mat Faced Gypsum Backing Boards
09 28 19 - Fibered Gypsum Backing Boards
09 51 33 - Acoustical Metal Pan Ceilings
09 51 33.13 - Acoustical Snap-in Metal Pan Ceilings
09 53 23 - Metal Acoustical Ceiling Suspension Assemblies
09 53 33 - Plastic Acoustical Ceiling Suspension Assemblies
09 54 46 - Fabric-Wrapped Ceiling Panels
09 77 23 - Fabric-Wrapped Panels
09 80 00.00.01 - Acoustic Treatment
09 81 13 - Acoustic Board Insulation
09 81 16 - Acoustic Blanket Insulation
09 81 29 - Sprayed Acoustic Insulation
09 83 13 - Acoustic Wall Coating
09 83 16 - Acoustic Ceiling Coating
09 84 13 - Fixed Sound-Absorptive Panels
09 84 16 - Fixed Sound-Reflective Panels
09 84 23 - Moveable Sound-Absorptive Panels
09 84 26 - Moveable Sound-Reflective Panels
09 84 33 - Sound-Absorbing Wall Units
09 84 36 - Sound-Absorbing Ceiling Units
09 93 13 - Exterior Staining and Finishing
09 94 13 - Textured Finishing
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