Lesson 7.2
Materials & Texture
Light gives a building form; material gives it identity. Brick, glass, timber, stone, water, render — each reads differently on the page, and learning to suggest them turns a generic mass into a particular, believable building.
Start hereTwo identical box shapes: draw one with brick coursing and one with sweeping glass reflections, and they become utterly different buildings — a warehouse and an office tower — without changing a single dimension.
Material is half of what a rendered drawing communicates.
01 — Cut hatch vs surface texture
Two jobs, one toolkit
You already met material patterns in Module 5 — but there they showed cut material in section (the inside of a wall). In rendering, you're showing the surface of a material seen on a face: the look of brick courses on an elevation, the sheen of glass, the grain of timber cladding. Same vocabulary of marks, different job: section hatch describes what it's made of; surface texture describes what it looks like.
Tap each material in the demo to see how a surface is suggested on a building face.
The key cue
Brick: regular horizontal courses with staggered verticals. Often indicated partially — a few courses suggest the whole wall.
Surface texture shows what a face LOOKS LIKE — distinct from Module 5 section hatch, which shows what a material is MADE OF.
02 — The principle of restraint
Suggest, don't cover
The beginner instinct is to texture every surface, edge to edge. The skilled move is to indicate a material in part of a surface and let the eye complete it — a few courses of brick at one corner, a band of glazing lines on one window, grain on a single plank. This partial indication reads as confident and keeps the drawing light and breathable; full coverage reads as heavy and laborious. The same logic as hatching (5.3): texture the minimum that tells the truth.
| Material | How to suggest it | Key cue |
|---|---|---|
| Brick | Horizontal courses, occasional verticals | Regular coursing rhythm |
| Glass | Diagonal reflection streaks, a hint of what's behind | Sheen + reflection |
| Timber | Grain lines, plank joints | Directional grain |
| Water | Horizontal ripples, broken reflection | Horizontality + reflection |
03 — Indian materials, Indian light
Render what's actually there
A believable rendering uses the materials of its place. In much Indian work that means exposed brick and the warm grey of fair-faced concrete; locally quarried stone like Jaisalmer sandstone or Kota; the deep shadows of jali screens; plastered and colour-washed walls; terracotta and clay tile. Rendered under a high, bright sun, these throw crisp, dark shadows and show strong texture — a very different feel from the soft, diffuse light of a grey northern sky. Render the material and the light of the actual place, and the drawing rings true; import a generic glass-tower aesthetic onto a courtyard house and it rings false. Same principle as the whole course: grammar is universal, but you speak it in the local dialect.
Materials don't render in isolation — they interact with the light (7.1) and the scale (Module 2). Texture catches raking light, so a rough stone wall shows its texture most where the sun grazes it and falls flat where light hits straight on; a good renderer concentrates texture in those raking zones and lets lit faces stay clean. And scale governs how much texture to show: at 1:200 a brick wall is a flat tone with maybe a hint of coursing; at 1:20 you'd draw individual bricks and mortar. Over-texturing a small-scale drawing greys it out; under-texturing a large-scale one looks unfinished. Texture, light and scale are a single system — which is why this module sits where it does, after you've learned all three. Rendering is where the whole course converges.
15 minutes
- Draw the same simple house elevation twice: once as brick, once as timber-clad. Use partial indication — don't cover the whole face.
- Add glass to the windows with two or three diagonal reflection streaks. Notice how little it takes to read as glass.
- Pick a building near you. Name its main materials and how you'd suggest each with marks.
- Concentrate your texture where a raking sun would catch it; leave the directly-lit faces cleaner.
Key terms — added to the Drawing Atlas
- Surface texture
- Marks suggesting what a material looks like on a seen face (brick courses, glass sheen, timber grain), as opposed to section hatch showing what it's made of.
- Partial indication
- Suggesting a material in part of a surface and letting the eye complete it, rather than covering the whole face. Reads confident and light.
- Raking light
- Light striking a surface at a low, grazing angle, which catches and reveals texture most strongly.
- Material identity
- The way rendered material turns a generic mass into a particular building — brick, glass, stone, timber each reading distinctly.
Check yourself
3 quick questions — pick an answer to see why.
Q1How does rendering surface texture differ from Module 5 hatching?
Q2The skilled way to apply material texture is to…
Q3Where does texture show most strongly on a surface?
- Section hatch shows what a material is made of; surface texture shows what it looks like on a face.
- Suggest materials partially — indicate and let the eye complete; full coverage reads heavy.
- Texture interacts with light (catches raking light) and scale (more detail at larger scale).
- Render the materials and light of the actual place for a drawing that rings true.
Your building now has form, light and material. But it still sits alone in a void. To make it live — and to show its size — it needs people, trees and context. That's entourage.