The squeegee draws its slow black arc, the striping wheel snaps a line straight as a chalked string, and by afternoon a lot that had gone gray and crazed with cracks reads new again under Concord's high river-valley light. HD Seal & Stripe LLC works the asphalt trades across Concord and up into the Lakes Region — sealcoating and crack sealing, pot-hole patching and hot asphalt paving, catch-basin rebuilds, parking lot line striping and stencil work, sport court coatings and resurfacing. Between coats there is stone to set and gravel drives to grade, spring and fall cleanups to sweep down to bare pavement, junk and demolition debris to haul off, and, once the Merrimack goes steel-colored and the first storm banks against the brick of Main Street, plowing to be done. It is honest, physical work with an honest, visible result: a clean edge where the seal meets the curb, crisp white lines waiting for morning, a surface that will hold whatever the season throws at it.