Greg's Blocks - User's Manual


Roof Blocks

Roof blocks can be made from a wide variety of materials by using the Sawbench. The orientation of a roof block can be changed after placement using the Chisel.

Roof Tile

Outer Corner

Inner Corner

These are the three basic blocks for building gabled and hip roofs.

Gabled Ridge

Hip Ridge

Ridges and valleys are useful for roof structures that span an odd number of blocks. They are "smart" blocks that will automatically connect to adjacent ridge or valley blocks as appropriate. A ridge will also connect to the sloping face of a plain Roof Tile, and a valley will cut through the back of a Roof Tile or Inner Corner (hard to describe, see examples below).

The "gabled" versions of these blocks always have vertical faces on two ends and auto-connect on the other two sides, whereas the "hip" versions auto-connect on all four sides.

Gabled Valley

Hip Valley

Using ridges and valleys to fill in
 odd-sized roof structures.

Usages of the various roof block types, showing some of the possible
configurations that ridge and valley blocks can adopt.

Connection between a ridge or valley and a sloping face.
The dark wood block in each of these is a plain Roof Tile.

The dark wood block here is an Inner Corner
that is connecting to a valley block behind it.


The Sawbench is used to create roof tiles by cutting up material blocks. Almost any type of full-cube block can be used as raw material for making roof tiles.

The GUI of a Sawbench has an input slot on the left for raw material, a central menu for selecting the shape of block to produce, and an output slot on the right.

Note: The Inner Corner shape (top right) takes 2 input blocks and produces 3 output blocks, so you will not be able to use it unless there are at least 2 blocks in the raw material slot.

Chisel Tool

The Chisel has the following uses:
  1. Right-click on a roof tile block to rotate it to a new position.
  2. Right-click on a Glass, Glass Pane, Glowstone or Ice block to harvest the block without breaking it.


2 iron ingots
1 circular saw blade
1 large pulley
1 wooden pressure plate
4 wooden planks

Circular Saw Blade
4 iron ingots
1 stick

Large Pulley
4 wooden planks
1 stick

1 iron ingot
1 stick


Due to the way Minecraft's lighting model works, to avoid casting unwanted shadows on adjacent blocks, it is necessary for all roof blocks to transmit light. Unfortunately, this means that light will pass through a structure made up entirely of roof blocks. If you want a roof to keep light out, you will have to place a layer of ordinary blocks under the roof blocks.