If you’re a contractor, and I’m referring to any type of contractor...
electrical, plumbing, roofing, general, concrete, paving,
landscaping, painting, drywall, hvac, plaster, flooring, siding,
insulation, windows, tiling, siding, framing, excavation,
soundproofing, drainage, waterproofing, etc.
then you’re definitely going to want to keep reading.