The compound itself is a recipe, not a single substance. Flexible PVC gets its softness from plasticisers, and the recipe can add UV stabilisers, fire-retardant packs or antistatic agents. One generic label therefore covers many different curtains, which is why the datasheet matters more than the name. Coated-fabric guides grade the finished sheet with standard tests. Tensile strength sits under ISO 1421 and tear resistance under ISO 4674 for the weave, plus the grade-specific lines covered in the next sections. Edge stiffness then decides which side seal fits, which is the sealing structure<\/a> half of the specification.<\/p>\n Constructions differ more than buyers expect. Some curtains use a two-layer build of weave plus coating, while a few makers roll a three-layer sandwich for exterior models. Our own standard curtain for a PVC roll-up build runs 0.9 to 1.2 mm thick, coated on both faces. That is a typical mid-band figure rather than a boast.<\/p>\n When two quotations differ by a fifth in price, the gap almost always hides in the compound. The weave is commodity cloth while the recipe is intellectual property. Price the layers instead of the label, because that is where the money sits.<\/p>\n Reading the layers also tells you what a supplier can and cannot change quickly. Weave goods come from a mill calendar, so substitutes take weeks. Compound tweaks happen at the coating line, which is why suppliers reach for grade changes first when a buyer pushes on price.<\/p>\n The curtain is also the only part of the door that folds on every single cycle. Guides, rollers and drives rest between passes, while the curtain works. A sensible buyer therefore weighs the material line first and treats the rest of the hardware as the supporting cast.<\/p>\n High speed door curtain materials are quoted on two numbers, and the numbers measure different things. Weight in grams per square metre states how much material sits in each square metre of fabric. One coated-fabric maker’s guide puts standard industrial grades at 700 to 900 gsm and heavy-duty grades at 1,000 to 1,400 gsm or more. Tear reserve and mass rise together across that span, which is the honest way to read a weight line. For a deeper dive, see cleanroom partition wall materials<\/a>.<\/p>\n Thickness runs on its own ladder. One door maker’s chart steps through 0.8, 1.2, 1.5 and 2.0 mm, rising from indoor partitions to port doors. Each step carries its own wind and temperature bands. Treat those wind levels as that maker’s scale, not as an EN 12424 class.<\/p>\n The same chart also carries a warning worth copying. Thicker is not automatically better, and a heavy curtain needs guides and a drive sized to match it.<\/p>\n The consequences show up quietly. A stiff sheet in a light-duty guide polishes the track and starts the hunt for the rattle. A thick pack around a small drum works the whole drive harder on every lift. Both costs arrive after installation, which is exactly when they are most expensive to fix.<\/p>\n A worked example shows how the dials interact. Our standard 0.9 to 1.2 mm curtain on a PVC roll-up door<\/a> sits deliberately mid-ladder. It is stiff enough to track true at full speed, yet soft enough to roll tight and forgive the occasional brush from a passing pallet. Matching the dials to the traffic beats maxing either number.<\/p>\n Buyer rule: read weight and thickness as a pair. Two curtains at the same weight but different thickness will roll, wear and sound different in the same doorway.<\/p>\n<\/div>\n The clothing analogy holds up. Gsm is the fabric weight per square metre, thickness is how bulky the garment feels, and winter clothing needs both plus a fill layer. Judge a curtain the same way and the cheapest-thickest pitch stops winning on looks alone.<\/p>\n Put the dials to work on a live comparison. Say one quotation offers 850 gsm at 1.0 mm and another 950 gsm at 1.4 mm for the same doorway. The first rolls lighter around its drum and goes easier on the guides. The second buys more tear reserve but asks the drive to work harder on every lift. Neither is wrong until you know the traffic, and that is the whole point of reading two dials instead of one.<\/p>\n No single compound serves a freezer, a dusty mill and a food line at once, which is why grades exist. A coated-fabric maker’s guide splits its range by application and attaches a temperature window and a test line to each grade. The rows below condense those grades into lines a buyer can actually demand on a datasheet.<\/p>\n![\"Close-up](\"https:\/\/www.raxdoors.com\/wp-content\/uploads\/2026\/09\/stock-high-speed-door-curtain-materials-fabric.webp\")
Fabric Weight and Thickness Are Two Different Dials<\/h2>\n
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Matching the Curtain Material to the Environment<\/h2>\n
![\"Warehouse](\"https:\/\/www.raxdoors.com\/wp-content\/uploads\/2026\/09\/stock-high-speed-door-curtain-materials-chilled.webp\")
![\"Rows](\"https:\/\/www.raxdoors.com\/wp-content\/uploads\/2026\/09\/stock-high-speed-door-curtain-materials-rigid.webp\")
![\"Factory](\"https:\/\/www.raxdoors.com\/wp-content\/uploads\/2026\/09\/stock-high-speed-door-curtain-materials-review.webp\")