The cap is the part people sit on, lean on and look at. It is also where sloppy work is most visible.
Overhang
A consistent overhang past the face creates a shadow line that makes the wall read as intentional. Too little and it looks unfinished; too much and it is a trip hazard on a seat wall.
Adhesive, properly
Caps are glued to the course below with a flexible construction adhesive rated for outdoors. Rigid adhesive cracks with movement.
Curves
On a radius, caps need cutting to keep joints tight. Uncut caps on a curve leave wedge gaps that collect water and freeze.
Lighting
Hardscape lights sit under the cap and wash down the wall face. The wiring runs behind the block during construction, which is why lighting is decided before the wall is capped.
Read next
Terracing a sloped backyard: two low walls beat one tall one
Why splitting a slope is usually cheaper, safer and better looking than holding it all at once.
ReadWhat goes behind a retaining wall, layer by layer
Clear stone, fabric, pipe and compacted backfill — and what happens when one is missing.
ReadGarden steps that people actually use safely
Riser height, tread depth, landings and the drainage detail everyone forgets.
ReadFree estimate
Planning something like this?
Send the address and a photo, or call or text 647-621-8592.