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Installation Instructions

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A Basic Interlocking Pavingstone System

EQUIPMENT LIST

1 Pair Gloves & Safety Glasses
Carpenter’s chalk line
Stakes
Spade
Stone cutter or masonry saw
Plate compactor
8-10', straight 2"x4" yellow pine
(2) 8' lengths of 1 1/2" O.D. PVC pipe
Nylon mason string
Tape measure
Broom
Line Level


Modified Herringbone Pattern

STEP 1-PREPARATION

  • Sketch a diagram of the area to be paved.
  • Square, rectangular, circular and free-forming projects are all possible.
  • To guide pavingstone lines, it is best to square off a 90° corner. If there is not an existing structure to measure off of, use a "3-4-5 triangle" method. Begin by measuring 3' along a straight reference. Measure 4' from one end of the 3' line, drive a stake where 4' and 5' marks meet. The angle opposite the 5' side will be 90°. Once this corner is done extend the other sides using additional "3-4-5 triangles".
  • Set stakes, for outside perimeters, 6" away from area to be paved.
  • Set string lines to establish finished patio height and slope.
  • Level the strings around the project using a string line level.

Adjust sides for water runoff by marking stakes below string line to allow for a 1" drop every 8'. Re-adjust the string lines to follow slope marks. The string line represents the surface of the completed job.

STEP 2-EXCAVATION

  • Skim last 1/2" off with spade to leave soil undisturbed.
  • Use chart to determine depth and gravel/sand requirements:

STEP 3-BASE

  • Fill in the excavated area with the quarry process gravel, flattening, compacting and sloping. Use the 2x4 and cross string lines as a guide to assure a perfect base installation. Proper compaction and a smooth pitched surface base is vital.

STEP 4-EDGING

  • Install a curb or edge restraint to prevent spreading of the pavers.
  • To determine where you want to install your edge restraint, lay a row of pavers with manufactured edgers, when available, from one side of the area to be paved to the other. Position your curb so that you maximize the use of whole pavers and minimize the number of stones you need to cut. Measure this distance and transfer the measurements to the curb area. Position your Pave Edge restraint and nail it into the aggregate base.

STEP 5-PLACING (SCREEDING) YOUR SAND

  • Add the coarse sand and smooth it out (do not compact) using the PVC pipes as
    1 1/2" guides or rails and the 2x4 board. Do approximately 8' sections and be sure to lay pavers before preparing the next section of sand. Use a trowel to fill in the gaps left behind by the pipes after you remove them. Do not walk on or disturb the freshly placed sand.

STEP 6-LAYING THE PAVERS

  • Lay the pavers on top of the smooth sand, beginning at the right angle. There are many pattern possibilities with Cambridge... ask for our DesignScaping pattern sheets.
  • Each Cambridge paver is manufactured with a spacer bar to assure constant joint widths, this allows the sand to fill the joints.
  • Just hold a paver so the bottom 1/4" to 1/2" clicks against the top edge of the paver already in the sand. Release your grasp dropping the paver directly downward.
  • Use additional string lines to insure straight paver joints.
  • Check that the rows of pavers are straight every 3' by running a string line along the front of the rows - making sure each paver touches the string.
  • Always install pavers working off multiple cubes, if project allows. Remove paver from the cubes by bands vertically.

STEP 7-CUTTING

  • Once you have laid all the pavers that will fit your area, you may need to cut some to fit.
  • Use your stone cutter for simple cross cuts or a power driven masonry saw for angled cuts.

STEP 8-COMPACTING THE PAVERS

  • Using the plate compactor, make two passes over the installed pavers. This will seat the pavers, forcing sand up between the joint and completing the interlocking effect of the Cambridge Pavingstone System.

STEP 9-FINAL SWEEPING AND COMPACTION

  • Sweep more sand over the surface until all joints are filled to the bottom of the chamfered edge.
  • Compact again.
  • Repeat process until joints are filled.