{"id":6181,"date":"2026-10-13T05:39:48","date_gmt":"2026-10-12T21:39:48","guid":{"rendered":"https:\/\/www.raxdoors.com\/blog\/high-speed-roll-up-door-acoustic\/"},"modified":"2026-10-13T05:39:48","modified_gmt":"2026-10-12T21:39:48","slug":"high-speed-roll-up-door-acoustic","status":"publish","type":"post","link":"https:\/\/www.raxdoors.com\/ar\/blog\/high-speed-roll-up-door-acoustic\/","title":{"rendered":"\u0634\u0631\u062d \u0623\u062f\u0627\u0621 \u0627\u0644\u0639\u0632\u0644 \u0627\u0644\u0635\u0648\u062a\u064a \u0644\u0623\u0628\u0648\u0627\u0628 \u0627\u0644\u0644\u0641 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0633\u0631\u0639\u0629"},"content":{"rendered":"

The commissioning sheet said pass, and for three months the pump room did its job in peace. Then the office that shares the block wall sent a written complaint. Every door cycle came through the plaster as a low thud, followed by a rattling duct, forty or fifty times a shift. Nobody had put a number against noise, so nobody had bought a number. That gap between a working door and a quiet enough door is what acoustic specification is for, and on high speed doors it is almost never discussed before purchase.<\/p>\n

Our factory has built high speed industrial doors since 1999. The range covers 21 models at curtain speeds from 0.8 to 2.5 m\/s. We build soft-curtain roll-up doors, insulated slatted doors and acoustic steel shutters on the same lines. That lets this page score high speed roll up door acoustic behaviour from production-floor experience rather than brochure copy. This page walks through the physics, the ratings worth asking for, and the openings where each construction earns its keep.<\/p>\n

What Acoustic Insulation Means on a High Speed Door<\/h2>\n

High speed roll up door acoustic insulation means one thing: how much airborne sound the closed assembly stops from passing through it. A high speed roll up door blocks sound with mass and with airtightness; the heavier and more airtight the closed curtain, the less noise crosses. When a project needs a curtain that also holds temperature rather than just traffic, the logic points to an insulated high speed door<\/a>. Mass, foam core and sealed edges do double duty there, against sound and against heat. What no fast door can do is stop the leakage paths, and leakage is decided at the perimeter, not in the middle of the curtain.<\/p>\n

Two numbers describe the result: Rw is the weighted sound reduction index defined in ISO 717-1, measured in decibels across the speech-relevant frequency band. STC is the closely related American rating, measured against ASTM E90 in a laboratory. Both are single-figure summaries of a lab test, and both describe the door as installed in the test rig, gaskets compressed, no traffic, no cycles.<\/p>\n

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Rw and STC are close cousins rather than rivals: same test method family, slightly different frequency weighting. Do not compare an Rw figure from one supplier against an STC figure from another without converting one of them first.<\/p>\n<\/div>\n

Site-built assemblies always measure below their lab figure; one acoustic engineering reference puts the typical lab-to-field penalty at 3 to 7 points. Deduct that margin before promising an office a quiet wall.<\/p>\n

It helps to separate two jobs that get bundled under one word. The closed door is a barrier, and its performance is measured in Rw or STC. The moving door is a noise source in its own right, decided by drive tuning, guide condition and cycle discipline. A quotation that quotes a barrier figure while ignoring the running noise has answered only half of the complaint that usually starts this conversation.<\/p>\n

Where the Noise on a Roll Up Door Comes From<\/h2>\n

A rolling curtain makes noise in four places, and each one responds to a different fix. Knowing which source you are actually fighting prevents the classic mistake of paying for acoustic mass to solve a seal problem. The four sources below are listed in rough order of how often they generate complaints:<\/p>\n