Step 3.)
Constructing the base, leveling layer and laying the turf

BASE CONSTRUCTION

1. A crushed stone base layered should be spread evenly over the prepared area.
2. If using heavy equipment to do so, the equipment should not drive directly upon the prepared site.
3. The crushed stone should be a D.O.T. Class 2 aggregate, with maximum particle size of three-fourths of an inch (¾"), or approved equal. Class 2 aggregate is available in most areas.
4. The crushed stone should be spread evenly, as smoothly as possible, and compacted to ninety percent (90%) proctor. A vibratory compactor will suffice on most small projects. A roller compactor may be necessary.
5. The depth of this base course should be determined by the engineer, architect or quarryman of record. As a rule of thumb, in arid climates such as Las Vegas, Phoenix or San Diego, two (2) inches of base course material is sufficient. In climates with more rainfall or a higher water table, such as Seattle, New Orleans, or Houston, six (6) inches may be necessary. The standard is four (4) inches of base course material for synthetic turf surfaces.

LEVELING LAYER

1. If the base course layer is not as smooth as desired, or there are undesired undulations, it may be necessary to add a layer of fines (stone dust, screenings, manufactured sand, etc.) to fill in the low spots or create a smooth surface. This layer should be kept to a minimum , preferably no more than two (2) inches. This layer must be compacted with a heavy roller. Do not use a vibratory compactor.

TURF LAYING

1. Roll the synthetic turf surface out on top of your constructed based, as planned. If the site requires multiple roll widths, be sure to have the grain of the fibers on each roll of turf running in the same direction.
2. If seaming is required (multiple roll widths), trim the selvedge (un-tufted edge) off of one roll and lay it on the base, in the desired position.
3. Lay the next roll adjacent to the first and overlap one edge of the adjacent roll of turf on top of the trimmed edge of the first roll.
4. With scissors or razor knife, trim the overlapped roll to match the trimmed edge of the first roll.
5. Make all cuts as close as possible without touching.
6. Repeat as needed for as many roll widths as the job requires.
7. Around the borders, trim the turf to match the edges.
8. If a secured or fastened edge is desired, do not secure the edge until most of the infill is installed.

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