NAICS 421330: Roofing, Siding, and Insulation Material Wholesalers
Industry Spending Overview
Federal obligations, top contractors and agencies, and related industry codes for NAICS 421330.
Competition
How many companies historically bid on federal awards in NAICS 421330, from bidder counts reported on USAspending.
Median 3-5 bidders per reported award. · 165 reported awards
Median Bidders
3
Per reported award, all-time
Single-Bid Awards
13%
Share of reported awards with one bidder
10+ Bidder Awards
10%
Share of reported awards with 10+ bidders
Reported Awards
165
89% of 186 total awards
Share of reported awards in each bidder-count bracket per federal fiscal year.
How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.
| Industry Family | Competition | Median Bidders | Single-Bid | Bidder Mix | Reported Awards |
|---|---|---|---|---|---|
421330This Code Roofing, Siding, and Insulation Material Wholesalers | Moderate Competition | 3 | 13% | 16589% of 186 | |
42133NAICS Industry | Moderate Competition | 3 | 13% | 16589% of 186 | |
4213Industry Group | Fewer Bidders | 2 | 28% | 1,35788% of 1,544 | |
421Subsector | Fewer Bidders | 2 | 42% | 89,49989% of 100,378 | |
42Sector Wholesale Trade | Moderate Competition | 3 | 18% | 7,852,24141% of 19,092,105 |
Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.
Related NAICS Codes
Industries similar to Roofing, Siding, and Insulation Material Wholesalers, by shared sector, subsector, and industry group.
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