If you want your lawn to look professional, have a proper drainage, and last you for the next twenty years, take every step with care.
CAUTION: Turf should be rolled out under the sun with blades facing down at least 1-2 hours before installation. This will allow the turf to acclimate and, as a result make, it easier to work with.
Lay turf onto base and position where needed. Using a carpet knife/razor knife, cut off excess turf on the backside (3 stitches in from sides). Cut turf (on backside) to fit area.
Fasten one end with 40D or 60D Bright Common nails of 5-6 inches in length, spaced 3-4 inches apart along the edges. Stretch turf and fasten with nails as you move across to the opposite end. Place a nail every 12-24 inches throughout center and every 3-4 inches along the perimeter.
EasySeam machine and seaming tape should be used to secure seams. Apply tape lengthwise to the bottom side of turf, lining up the turf edges with the orange lines on the seaming tape. Use EasySeam machine to activate the glue on the seaming tape. Fasten together seams by using 11 gauge 6"x1"x6" staples spaced 4 inches apart along the seam. Do not counter sink staples.
Note: Be sure the seams are taut and precise, the grain of the turf is facing in the same direction, and the space at the seam is the same as the stitching gauge.
Hand or power broom again so that the blades are standing straight up. Use carpet scissors to trim off the excessive turf blades. Clean the surrounding area with a blower or a broom.
As you can see on the diagram above, a wire mesh is installed on top of the soil, after you removed dirt and existing sod, and before you start spreading and compacting drain rocks and decomposed granite. A Wire Mesh, or a wire barrier, is meant to prevent gophers and moles from damaging lawns. Are those critters populated in your area? Then, no matter what type of lawn you install, natural or artificial, you want to protect it. There are special "gopher wires" that are made specifically for this reason - to make strong underground barrier below the surface of your lawn. This step is optional. Some regions have no issues with gophers, while in others, gophers' over-population affects the whole gardening and landscaping experience. Gophers love to tunnel their way up your lawn and to turn it into their personal salad bar. They are not too interested in artificial turf with rocks and granite underneath. If there are no problems with gophers and moles in your installation area, a wire mesh can be an unreasonable expense.
Prior to installation, lay turf out under the sun for at least 1-2 hours to allow turf to acclimate. This will make the backing less stiff and the turf easier to be swept. Always stretch and install turf taut. One yard of base materials will cover 80 square feet at 4 inches depth (1 Yard = 1 Ton). Do not overlap seams. Never drive nails too far into the base because this will create a noticeable dip.
Always hand or power broom turf prior to filling.
Always run grain of turf in the same direction. Use a 2x4 (straight line installation) or 1x2 (curve line installation) of synthetic or pressure treated wood bender board around the perimeter of turf area to frame and protect the turf from soil and debris.
Use only manufacturer recommended infill materials. Infill amount will vary. A 100 Ib. bag of infill will typically cover a 60 sf. of turf.