Resurfacing or Removal and Replacement?

When the time comes to repave your driveway, the big decision is whether to resurface (overlay) or remove and replace the asphalt.

A typical resurface would include installing butt joints (cutting out asphalt where it butts up to other surfaces such as garage floors, aprons, sidewalks & curbs), the application of primer over the existing asphalt (this bonds the new asphalt to the old) and the installation of 1½” compacted surface asphalt. Resurfacing is less expensive than removal, but is prone to reflective cracking and drainage problems if your existing grade is marginal.

Removal and replacement would include removal of the existing asphalt, adding gravel to the base to obtain the correct grade, compaction of gravel and the installation of 2” compacted surface asphalt. While removals are more expensive, they should provide ideal drainage and reflective cracking is not an issue.

Resurfacing can be a viable option if removal doesn't fit into your budget; just keep in mind that when those first reflective cracks appear, it’s important that they are filled. If you are looking for a long term solution – it is usually more cost effective to opt for the more expensive removal and replacement.

Article Source: http://www.asphaltadvisor.com/2010/03/resurfacing-or-removal-and-replacement.html