BlackJack Seal Coating — Foundation Seal Coating · Protect Your Investment☎ 978-855-9405

Protect Your Investment · Since 1984

Foundation coating, quoted in 60 seconds.

Poured a foundation? We break the pins, patch below grade, and seal it with asphalt-based coating — on your schedule, before inspection. Straight per-foot pricing, no games.


♠ Every standard job includes

  • Break form pins — inside and out, flush and clean.
  • Patch holes below grade — sealed before anything gets buried.
  • Asphalt-based seal coating — full coverage on the exterior wall, done before your inspection date.

♠ Add-on protection

Interior patching

Interior pin holes patched with hydraulic cement — priced per foot, quoted up front with the job.

Dimple mat & foam board

Drainage mat and insulation board installed while we’re already on the wall. Time & materials.

Waterproof membranes

Full waterproofing membrane systems for wet lots and finished basements. Time & materials.

♠ Built for builders

Instant numbers

Wall height and linear feet in, price out. Get a real quote while you’re still on the site walk.

Inspection-date scheduling

Tell us when the inspector comes. We coat before they do — that’s the whole promise.

Owner on every job

A name builders have trusted since 1984, now run by Cory — the same person who quotes it, coats it, and stands behind it.

  • Leominster
  • Fitchburg
  • Lunenburg
  • Lancaster
  • Sterling
  • Westminster
  • Townsend
  • Pepperell
  • Shirley
  • Ayer
  • + surrounding towns

Inspection coming? Deal us in.

Sixty seconds to a real number — or call and talk to the owner.

Get an instant quote