Fast Installation in 5 Easy Steps
- Plan your layout
Analyze your site.
Note slope and drainage patterns to route rain water around wall ends, not over the top.
- Prepare the foundation
Dig a trench 12” deep and 28” wide along the planned path of your wall. Compact soil. Lay drain tile at bottom and back of trench. Install a 6” base of granular aggregate. Compact to form a level base.
- Install base course and backfill
Lay a row of Newcroft units on the prepared foundation. Alternate the large and small units, as well as the right and left angles. Lay the units so the Alignment Grooves form a line and maintain the random surface effect. Level each unit. Backfill behind and between the units with granular aggregate. Compact.
- Install pins and additional courses
Place triangular pins in pin slots. Place large units over small units and small units over large units with pins abutting the back of the core wall. Alternate the large and small units, as well as the right and left angles. Backfill behind and between the units with granular aggregate. Compact.
- Cap the wall
Finish your Newcroft wall with cap units.Note: use high strength concrete adhesive to secure the caps and 90˚ corner units. Use geogrid for all walls above 2 ft.
- Use the Alignment Groove on the top of the units to align the first course. This is required for the first course only.
- Rules for installing Newcroft units:
A. In each row — repeat: large - small - large - small.
B. In each course — large over small, small over large.
C. At start of a wall — use a 90˚ Corner unit to start a 90˚ corner. When the end of the wall will not be exposed align the pin slots of the first unit in each course vertically (the end of the wall will stagger in and out).
- Curves always add extra challenges for the wall builder. Keep in mind that the wall length increases with each course of Newcroft on an inside (concave) radius. Conversely, wall length decreases with each course on an outside (convex) radius. These dimensional changes will alter the bond of the wall and require adjustments to return the wall to proper bond. Below are suggestions for correcting bond in curved walls.
A. Inside (Concave) Radius Wall—After installing 2-3 Newcroft courses, you will notice that the bond is shifting as the wall lengthens. The pin slots become misaligned to the point where the pin in the lower course will not enter the core of the unit above it. To rectify this, you will install a wider “bond-shifting unit” in place of a “small” unit. This will shift the bond back to normal. Instead of installing large—small—large—small, you will substitute this “bond-shifting unit” in place of a small unit. To create a bond-shifting unit, cut a large unit to approximately 7.75” in length. Install it between two large units. This will correct the wall bond so you can continue construction. Repeat this adjustment as needed in the radius and in the successive courses.
B. Outside (Convex) Radius Wall— After installing 2-3 Newcroft courses, you will notice that the bond is shifting as the wall becomes shorter with each successive course. To remedy this, you will need to cut a large unit to shorten the wall and correct the wall bond. Repeat this adjustment as needed in the radius and in the successive courses.
NOTE: After cutting your Newcroft block, distress the edge with a hammer to simulate a tumbled appearance on the edge.