Preparation: Preparing an area for paving is hard work and probably best left for professionals who have the expertise and equipment. Most will start by stripping the area of all vegetation, then excavating the area to the required depth. The depth (4 to 9 inches) depends on the climate and surface material. Next soil compaction is critical to ensure the pavement doesn't buckle with time. In warmer climates, follow with a compacted layer of road base (gravel mixed with dirt) followed with asphalt. In colder climates, follow with full-depth asphalt. Form work may be needed to build a set of stairs or maybe a wheelchair ramp.

Removing old paving: As far as old paving removal, you should check with your contractor to see if they know of places that buy old concrete and asphalt. Many types of paving can be recycled and used in new paving projects.

Types of loose fill: Gravel is an inexpensive choice that works well for walkways. It uses washed and cleaned rocks ranging from 3/4 inch to an inch and a half in diameter. Usually made from granite, but it comes in different forms of rock.

Pebbles are similar to gravel in price and look. Similar pieces ranging around a quarter-to 3/8th inch in diameter.

Crushed rock is the same thing as gravel.

Rock is larger than gravel and arranged by size and usually found in rivers.

Cobblestone is 4 to 8 inches. It's not great for walkways but is useful in ponds and as garden accents.

Road base is one of the least expensive forms of loose fill and generally used as a base underneath asphalt or concrete paving. Made of 60-percent dirt and 40-percent rock, it's not considered a great paving material because it will wash away over time.

Cinders are ashes from coal or wood. Very dusty, cinders are a poor choice for top surface material.

Slag is made from leftovers of metal smelting. Because the pieces can be sharp or jagged, it's not a recommended choice for walkways.

-- Tips courtesy of HomeAdvisor.com