Cutting and Modifying Concrete Blocks
SAFETY FIRST: Always wear safety glasses when splitting or cutting concrete retaining wall blocks. A dust mask is recommended when cutting blocks.
- Use a masonry saw with a diamond cutting blad or a metal chop saw with a dry cutting diamond blade.
- NOTE: Masonry saws and metal chop saws are available for rental at most retail centers.
Cutting Caps - For Curves
Capping a curved retaining wall takes a bit of cutting and fitting, but produces a beautiful finish. Be sure to wear appropriate safety gear, including protective eye wear, dust mask, and hearing protection when cutting, and operate power saws carefully.
Cutting capstone for curved walls
- Place two caps on top of the wall, spaced so a third cap will fit tightly between their widest point.
- Set another cap on top of the first two caps in the center and mark where they overlap on the bottom of the center cap.
- Remove the center cap and cut along the marks. Then set in place so the three fit tightly together.
- For complete details see instructions on building curved retaining walls.
Cutting Caps - For Corners
Cut caps at 45 degree angles
- Cut caps at 45 degree angles to complete the inside corner and give the wall a custom finished look. It's a good idea to secure caps with a high strength construction adhesive once they are all cut.
More options for finishing your retaining wall.