Chapter 04 · The material index
A rug is a material decision first.
Colour is what you notice; construction is what you live with. Here is what each weave in the Loncar atlas actually does, including the parts that are inconvenient.

Wool blend
Weight, recovery and a long life.
Wool is springy. Press it and it comes back, which is why a wool-blend rug still looks intentional after two years under a coffee table. It also holds dye deeply, so the colour reads rich rather than printed.
It sheds a little in the first weeks. That is loose fibre from production working its way out, not the rug failing, and it settles with regular gentle vacuuming.
Worth knowing. Tonal variation between yarns and slight abrash across the field are properties of a dyed natural fibre. We do not treat them as defects.
Appears in

Jute and cotton
Texture without volume.
A flatweave has almost no pile, so it reads as texture rather than height. That makes it the right answer under a dining table, behind a door with tight clearance, or anywhere a thick rug would fight the room.
Plant fibre shifts colour along its length. Up close you can see the weave crossing; that irregularity is the point.
Worth knowing. Jute does not like standing water. Blot spills straight away and keep it out of wet rooms.
Appears in

Washable fibre
For rooms where spills are a matter of when.
A tight, low loop engineered to survive a cold gentle cycle and dry flat without distorting. Nurseries, kitchens, hallways, homes with animals.
Check your machine drum against the rug size before ordering: a 5×8 needs a reasonable domestic machine, and larger washable sets are better handled at a laundrette.
Worth knowing. Machine washable means cold and gentle. Hot washes and tumble drying will damage the backing.
Appears in

Pile height
The specification that decides the room.
Pile height decides whether a door clears the rug, whether a desk chair rolls, and how much give you feel underfoot. Every specification page states it in inches for exactly this reason.
Under 0.2 in: doors and chairs are fine. Around 0.4 in: comfortable underfoot, most doors still clear. Over 1 in: luxurious, and you will need to check the door swing.
Worth knowing. Measure your door clearance before ordering a high-pile set. It is the single most common cause of a return.
Still deciding on colour?
Screens lie about colour, and so does every preview tool including ours. Eight real swatches in your own light settle it. The price of the box comes off your next rug order.
