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Crackfilling Southern NH and Merrimack Valley


Sealcoating can DOUBLE the life of your pavement by protecting it from its enemies: sun & oxidation, water, gasoline, oil & other fluids. Asphalt Sealcoating Co. applies sealcoating products tailored for each particular situation to form a tough protective coating over your parking lot or driveway. Sealcoating preserves the investment you have in your asphalt, while at the same time making your proerty safer, cleaner and more attractive.

Air, sunlight and moisture are the major causes of surface deterioration. Unprotected surfaces oxidate and allow the aggregate to be washed away.

Unprotected pavements lose flexibility; aggregate ravels from the surface and the pavement becomes rough. The surface becomes brittle and develops cracks.

Water penetrates the cracks and damage progresses. hydraulic pressure (expansion and contraction) enlarges the cracks. Damage occurs faster under heavy traffic and/or during freeze-thaw cycles.

Cracks allow water to penetrate to the sub-surface and rupture the pavement; causing small cracks to enlarge until the pavement actually separates, creating a pothole.


Crack sealing your asphalt will help prevent water from penetrating into your sub-base which is a major cause of pavement failure. By using state-of-the-art equipment to install hot applied joint sealants ; Asphalt Sealcoating Co. seals these cracks shut.

Water flowing through open cracks into sub-base materials leads to pavement deterioration which is commonly evidenced by the following conditions:

  • Consolidation of sub-base material
  • Formation of voids under pavement
  • Swelling, shrinking of sub-base materials
  • Frost and/or freeze-thaw action
  • Alligatoring, raveling, pot holes and/or complete failure

If they are left unattended, open cracks will begin to compromise the qualities of your pavement surface and eventually lead to the need for costly repairs or replacement. They may also increase your chance of liability problems.

Asphalt Sealcoating Co offers a means of extending pavement life through the use of a crack repair maintenance program which deters the harmful effects of water penetration into the sub-base. Application of a hot rubberized asphalt crack filler will prevent water penetration into the sub-base thereby prolonging the life of your pavement and elimination of potential liabilities.

Crack sealing is the foundation of a successful maintenance program for any type of pavement. Every 2 to 3 years, pavement should be inspected to see if additional crack sealing is required.

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