Hard to describe this clearly in the title, so let me try get the idea across in more detailed explanation:
I have lots of square cube blocks in my game, the player can place and scale the height of these blocks, kind of like a simplified minecraft. These blocks all have tileable textures so they look continueous side by side.
To build a castle looking structure you would scale a block to a height of x12, the block beside to height x10, and continue altering heights of your blocks between x12 and x10 till you have built the complete structure out of blocks.

My problem is this: When scaling the height of a block, the texture on the sides (walls) are streched, so the tileable textures on the sides (wall) no longer match the wall textures of the blocks beside it.

My question is, to avoid this "stretching" problem on the textures... Is there any way to tile the texture on the objects depending on it's size instead of stretching it?