Why do roller blind fabric edges curl?
Roller blind fabric edges curl because the coating and the base cloth of the fabric pull unevenly at a cut edge and respond differently to temperature and humidity. The edge can curl inward or outward, and on some blinds it gives an hourglass shape down the sides. It is a normal characteristic.
Roller blind fabrics are usually coated on one face. The coating and the base cloth respond differently to temperature and humidity, and at a cut edge there's nothing holding the two in balance, so the edge rolls.
What contributes
- The fabric's coating and construction. Some ranges curl more than others.
- Temperature and humidity changes at the window.
- How the fabric has been stored and rolled before it was made up.
Edge curling is a normal characteristic of roller blinds rather than a manufacturing fault. It tends to be more visible on lighter, thinner fabrics and on blinds that spend a long time part rolled.
This answer is general information. For your own windows, your retailer's advice and your order with them come first.
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