Walls built out of marble provide a beauty bonus, which can go a long way in keeping your colonists happy while they go on their day-to-day bonus. Marble, on the other hand, offers the boon of beauty. Some stones offer practical advantages like higher hit points or faster construction time.

Fastest stone material for construction.

This can reduce the time needed to build up fortifications or to build particular stone furniture in bulk. For sandstone, its greatest virtue is that it is comparatively the fastest stone material to construct. Oftentimes, colonies tend to rely on one type of stone as its main structure material, and the decision depends heavily on their preferences. They are sturdy, often plentiful, and are entirely non-flammable. Stones are always the key foundation to any vanilla Rimworld defense.

Nearly double the hitpoints of stone walls.

Less than half the time to build than stone walls.

It also helps that Plasteel takes far less time to build than stone, which can plug up holes in defense if the job needs to be done in a hurry. While building a whole outer wall of a colony with plasteel is unlikely, having plasteel reinforce key points can be smart. With nearly double the amount of hitpoints of stone walls, it takes quite a while for even raider sappers to break down. However, if you’re looking for walls with the highest amount of hit points, this is your best choice. It is a rare material that is essential for far more essential items or structures, so making walls out of it can be rather wasteful. Now some of us are likely already raising an eyebrow at recommending plasteel as a material for walls.

Highly flammable quality can be used in traps.

For example, placing wooden walls within a confined room to burn while blocking off the exits could cook raiders alive. Its major downside is being flammable, but that too can be applied in a way that is advantageous to your colony. What you might not know is that wood is also one of the fastest walls to build, which can drastically cut down on construction time if you’re looking to set up cover or blockades quickly. In general low-tech or early game, colonies are going to rely on wood until there are enough stones to build a stronger alternative. Take a gander and see if you are among the savvy leaders who know their “stuffs”, or better yet learned something new. However, there are a few quirks about particular materials that may elude some of the beginning players of Rimworld.

There’s no lack of options when it comes to building walls in Rimworld, doubly so if you add more through mods. Rimworld Best Wall Materials (2021 Edition)

How to get steel rimworld