> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/naics/238310/ # NAICS code 238310: Drywall and Insulation Contractors The companies classified under NAICS 238310, where they are based, how big they are and how the code maps to SIC. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** NAICS 238310 is the code for Drywall and Insulation Contractors, in sector 23: Construction. The companies counted under it are mostly very small: 58% have 50 or fewer employees, and 91% are headquartered in the United States. ## What is NAICS 238310? NAICS 238310 is the code for Drywall and Insulation Contractors. It belongs to sector 23: Construction. NAICS, the North American Industry Classification System, is the standard U.S. government agencies use to sort businesses by what they mainly do, and each digit narrows the category. Most of the companies counted also carry SIC 1742, Drywall and insulating contractor, in the older SIC system (95%). - 58% of the companies counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (91%). Within the US, California is the biggest state (10%). - Most were founded in the 2010s (21%), then the 1980s (20%). **Figure: How NAICS 238310 is built.** The code 238310 split into its parts: sector 23, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 238310. Each digit narrows the category.* ## Which companies are classified under NAICS 238310? The biggest by headcount range include Standard Drywall, Petrochem Insulation, Acousti, General Insulation and Fl Crane And Sons. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Standard Drywall | Corona, CA | 1,001 to 5,000 | | Petrochem Insulation | Sellersburg, IN | 1,001 to 5,000 | | Acousti | Orlando, FL | 501 to 1,000 | | General Insulation | Medford, MA | 501 to 1,000 | | Fl Crane And Sons | Fulton, MS | 501 to 1,000 | | Paul Johnson Drywall | Phoenix, AZ | 501 to 1,000 | | Green Country Interiors | Tulsa, OK | 501 to 1,000 | | Entreprise Bonglet Sas | Lons-Le-Saunier, France | 201 to 500 | | Jacobson & Company | Elizabeth, NJ | 201 to 500 | | Sears Contract | Raleigh, NC | 201 to 500 | | Mk Marlow | San Antonio, TX | 201 to 500 | | Interstate Drywall | Lyndhurst, NJ | 201 to 500 | | Sweeney Drywall Finishes | Boxborough, MA | 201 to 500 | | Advanced Industrial Services | Toledo, OH | 201 to 500 | | Retro Insulation | Richmond, VA | 201 to 500 | | Capitol Drywall | Gaithersburg, MD | 201 to 500 | | Best Interiors | Anaheim, CA | 201 to 500 | | Bayside Interiors | Fremont, CA | 201 to 500 | | Sloan & Company | Mountain Lakes, NJ | 201 to 500 | | Adco Grier | Gold River, CA | 201 to 500 | | Dynamic Contracting | Washington, DC | 201 to 500 | | Adobe Drywall | Phoenix, AZ | 201 to 500 | | Ok Interiors | Cincinnati, OH | 201 to 500 | | Pillar Construction | Alexandria, VA | 51 to 200 | | Vitapur Nigeria | Lagos, Nigeria | 51 to 200 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are NAICS 238310 companies based? The largest groups are headquartered in the United States (91%), the United Kingdom (2%) and Italy (2%). **Figure: Where companies in NAICS 238310 are based.** Bars for the share of counted companies in NAICS 238310 headquartered in each country: United States 91%, United Kingdom 2%, Italy 2%, France 1%. *Share of counted companies in NAICS 238310 by headquarters country.* Within the United States, California (10%), Texas (8%) and Maryland (5%) lead. **Figure: US headquarters of companies in NAICS 238310, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 238310 headquartered in each state. The largest are California 10%, Texas 8%, Maryland 5%. *Share of counted US companies in NAICS 238310 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 238310? 58% of them have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in NAICS 238310.** Seven columns for the share of counted companies in NAICS 238310 in each employee range: 11 to 50 58%, 51 to 200 32%, 201 to 500 6%, 501 to 1,000 2%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in NAICS 238310 in each employee range.* ## How old are NAICS 238310 companies? Most were founded in the 2010s (21%), then the 1980s (20%). **Figure: When companies in NAICS 238310 were founded.** Eight columns for the share of counted companies in NAICS 238310 founded in each era: Before 1960 8%, 1960s 5%, 1970s 9%, 1980s 20%, 1990s 18%, 2000s 19%, 2010s 21%, 2020s 0%. *Share of counted companies in NAICS 238310 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 238310 compares - 21% were founded in 2010 or later, against 30% across all NAICS codes on this site. ## NAICS 238310 and the SIC system NAICS replaced SIC in 1997, but the two do not line up one to one: companies filed under one NAICS code can carry several SIC codes. These are the ones seen most. | Code | Title | Share of counted | | --- | --- | --- | | SIC 1742 | Drywall and insulating contractor | 95% | ## Where NAICS codes come from NAICS is maintained by the U.S. Census Bureau with Canada and Mexico and revised every five years; the current edition is NAICS 2022. To check exactly what a code includes, search the [official NAICS index](https://www.census.gov/naics/) or read the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html). Pick a code by what a company mostly does, not by who it sells to. ## How do you reach the people at NAICS 238310 companies? The people to talk to are usually owners, operations and procurement leaders. You can build the list from this code in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with NAICS code 238310 (Drywall and Insulation Contractors) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the owners, operations and procurement leaders at companies with NAICS code 238310, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Codes next to it: [NAICS 238320: Painting and Wall Covering Contractors](https://enrich.chat/naics/238320/)[NAICS 238330: Flooring Contractors](https://enrich.chat/naics/238330/)[NAICS 238340: Tile and Terrazzo Contractors](https://enrich.chat/naics/238340/)[NAICS 238350: Finish Carpentry Contractors](https://enrich.chat/naics/238350/)[NAICS 238390: Other Building Finishing Contractors](https://enrich.chat/naics/238390/) Others in sector 23: [NAICS 238220: Plumbing, Heating, and Air-Conditioning](https://enrich.chat/naics/238220/)[NAICS 236220: Commercial and Institutional Building](https://enrich.chat/naics/236220/)[NAICS 238990: All Other Specialty Trade Contractors](https://enrich.chat/naics/238990/)[NAICS 236115: New Single-Family Housing Construction](https://enrich.chat/naics/236115/)[NAICS 238210: Electrical Contractors and Other Wiring](https://enrich.chat/naics/238210/)[NAICS 238160: Roofing Contractors](https://enrich.chat/naics/238160/)[NAICS 237310: Highway, Street, and Bridge Construction](https://enrich.chat/naics/237310/)[NAICS 237210: Land Subdivision](https://enrich.chat/naics/237210/) ## Frequently asked questions ### What is NAICS code 238310? NAICS 238310 is the code for Drywall and Insulation Contractors, in sector 23: Construction. ### What is the SIC code for NAICS 238310 (Drywall and Insulation Contractors)? 95% of the companies counted carry SIC 1742 (Drywall and insulating contractor), but the two systems do not map one to one. ### Which companies are classified under NAICS 238310? The biggest by headcount range include Standard Drywall, Petrochem Insulation, Acousti, General Insulation and Fl Crane And Sons. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 238310 companies based? The largest groups are headquartered in the United States (91%), the United Kingdom (2%) and Italy (2%). ### How big are the companies in NAICS 238310? 58% have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### Is NAICS 238310 the same as a SIC code? No. NAICS replaced SIC as the U.S. federal standard in 1997, and the two do not map one to one. The SIC code seen most among these companies is 1742. ## Try this prompt Find the people at NAICS 238310 companies ```text Use www.enrich.chat to find the owners, operations and procurement leaders at companies with NAICS code 238310, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 238320](https://enrich.chat/naics/238320/) - [NAICS 238330](https://enrich.chat/naics/238330/) - [NAICS 238340](https://enrich.chat/naics/238340/) - [NAICS 238350](https://enrich.chat/naics/238350/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)