How to Work Around Gaps in Vertically Stacked Walls

When you stack wall blocks directly on top of one another to build tall fortifications, you will notice horizontal slits between the upper and lower rows instead of a solid, flush stone surface.

Why Stacked Walls Show Gaps

To make diagonal connections possible, the mod disables vertical wall connections for technical reasons. Because of this change, stacked walls revert to the classic behavior seen in older eras of Minecraft. Whenever one wall sits directly beneath another, the lower wall keeps its recessed top gap rather than stretching upward to meet the block above it seamlessly.

Designing Tall Walls Without Unwanted Gaps

If you want solid defensive walls for castles or city perimeters without see-through slits, adjust how you layer your blocks:

1. Build the main height of your diagonal wall out of full solid blocks, such as stone bricks, blackstone, or sandstone, placed corner to corner.

2. Place a single row of matching wall blocks along the very top to create clean diagonal battlements and parapets without stacking walls on walls.

3. For lighter decorative barriers and intricate circular structures, avoid stacking two wall blocks together; instead, combine brick walls with contrasting blocks like sandstone fences, or intentionally use the stacked gaps as arrow slits and weathered openings in ruins.