Differences Between Asphalt Patching, Peel & Pave, and Mill & Pave
How Does Asphalt Patching Work?
First, Raleigh Paving cleans the repair area and applies a tack coat to help the new asphalt adhere to the existing surface. A layer of fresh asphalt ranging in depth from 1â€ to 2.5â€ is then installed upon the existing surface. Patching is a cheap but temporary solution to asphalt defects; it will not last as long as removal and replacement. Eventually, cracking will reflect through the new patch, or spread beyond the patch.
Asphalt Removal & Replacement
Asphalt removal and replacement or “peel & pave” is a common practice and a longer-term repair than patching. The repair is often prescribed for areas with surface cracking and/or base failure.
How Does Peel & Pave Work?
The first step in the “peel & pave” process is to saw cut the perimeter of the repair area in order to achieve a smooth, even edge. After the edges are saw cut, the damaged asphalt is removed to a specified depth.
Typically, the new asphalt is installed in 2 lifts: a binder course (usually at 3″ deep), followed by a 1″ top course. The depth of new asphalt will vary depending on the extent of existing damage and the load requirements of the surface. Peel & Pave can last up to 10 times longer than simple patch work, making asphalt removal & replacement a cost-effective and more permanent solution to distressed and damaged areas – so you can have peace of mind over time!
Mill & Pave
Milling, or grinding, takes a much different approach than either patching or peel & pave in that it removes built-up layers of deteriorated asphalt down to a specific depth, making room for a new surface. It is ideal for larger areas.
How Does Mill & Pave Work?
Mill & Pave begins by grinding up the existing asphalt into a tiny, gravel-like material (often referred to as “millings”). The millings are then hauled off-site and can easily be recycled. The newly-grinded surface is then layered with tack and set to receive a fresh, smooth coat of asphalt. In many cases, mill & pave is done on large surface areas where a peel and pave or patch is just not sufficient and not cost-effective.