This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Roofing (all materials), including Sheet Metal; Roofing Felt; Roll Roofing; Roofing Tile; Shingles.
Tar Paper; Bulk Sheet Metal Roofing and Siding; Wood Siding.
Possible NAICS Codes
238160 – Roofing Contractors
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
423330 – Roofing, Siding, and Insulation Material Merchant Wholesalers
324122 – Asphalt Shingle and Coating Materials Manufacturing
444190 – Other Building Material Dealers
321113 – Sawmills
236220 – Commercial and Institutional Building Construction
332322 – Sheet Metal Work Manufacturing
444130 – Hardware Stores
332311 – Prefabricated Metal Building and Component Manufacturing