{"id":6171,"date":"2026-10-12T14:27:58","date_gmt":"2026-10-12T06:27:58","guid":{"rendered":"https:\/\/www.raxdoors.com\/blog\/high-speed-roll-up-door-sealing\/"},"modified":"2026-10-13T08:05:25","modified_gmt":"2026-10-13T00:05:25","slug":"high-speed-roll-up-door-sealing","status":"publish","type":"post","link":"https:\/\/www.raxdoors.com\/ar\/blog\/high-speed-roll-up-door-sealing\/","title":{"rendered":"\u0625\u063a\u0644\u0627\u0642 \u0623\u0628\u0648\u0627\u0628 \u0627\u0644\u0644\u0641\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0633\u0631\u0639\u0629: \u0623\u064a\u0646 \u064a\u0639\u0645\u0644 \u0643\u0644 \u062e\u062a\u0645"},"content":{"rendered":"

On a winter shift, press a fingertip against the jamb of a closed roll up door and hold it there for ten seconds. A steady draft, a dust line on the first rack row, and pest complaints that keep returning all point the same way. The door itself is probably fine. The sealing is not.<\/p>\n

That is a structures problem, not an accessories problem. RAX Door Technology has built high speed doors in Hebei since 1999, with 21 models running at 0.8–2.5 m\/s across our high speed roll up door line. On our own insulated model, the seal package is specified as perimeter weatherstripping on all four sides plus inter-panel EPDM seals. This guide takes high speed roll up door sealing apart position by position, so you can read your own doorframe the way our engineers do.<\/p>\n

Where a High Speed Roll Up Door Seals<\/h2>\n

A high speed roll up door closes four separate lines at once, and each line needs its own seal type. The curtain edge travels down the guides twice per cycle. The bottom edge meets a slab that is never as flat as the drawings claim. The top edge sits under a header that hides the coiling roll. The curtain faces run against the guide channels that steer the whole curtain.<\/p>\n

Those four positions move differently, so they seal differently. Buying one generic seal kit and expecting it to cover all four lines is where most sealing budgets go to die. Before comparing profiles at all, it pays to pick the right weather seal profiles<\/a> for each position rather than one shape for the whole doorway.<\/p>\n

\n\"Forklift
Four sealing positions, four different jobs: guides, floor line, header and curtain faces.<\/figcaption><\/figure>\n\n\n\n\n\n\n
Position<\/th>\nWhat it closes<\/th>\nTypical build<\/th>\nFails first from<\/th>\n<\/tr>\n
Side guides<\/td>\nVertical gap between curtain edge and guide<\/td>\nBrush cartridges or twin wiper lips inside the channel<\/td>\nCurtain misalignment, grit packing<\/td>\n<\/tr>\n
Bottom edge<\/td>\nFloor line, uneven slab, draught, water<\/td>\nBrush-and-wiper astragal or rubber bulb<\/td>\nAbrasion, ice, set from standing closed<\/td>\n<\/tr>\n
Header<\/td>\nGap above the curtain at the roll area<\/td>\nFlexible apron or angled header flashing<\/td>\nLoose fixings, curtain growth<\/td>\n<\/tr>\n
Curtain faces<\/td>\nGap where curtain meets guide face<\/td>\nGuide liners plus curtain stiffness; inter-panel EPDM on insulated models<\/td>\nCurtain wear at high cycle counts<\/td>\n<\/tr>\n<\/table>\n

Keep the four positions separate in your head and most sealing arguments get simple. A side seal that drags is not a bad seal, it is a wrong clearance. A bottom seal that leaks on one corner is a slab problem wearing a seal costume. Diagnosis starts with naming the position, and only then with naming the part.<\/p>\n

The rest of this guide walks the positions in the order water, dust and drafts travel. Side seals come first because they are the position most often specified wrong. The bottom edge comes next because it takes the most physical abuse. Header and curtain faces complete the envelope before we look at what the whole structure is worth.<\/p>\n

One vocabulary note before the deep dive. Suppliers say side seal, guide seal, jamb brush and wiper for the same position, and kit sellers say weather stripping for all of it. This guide sticks to position names rather than product names. When you spec high speed roll up door sealing by position, one catalogue word stops mattering and the contact line starts mattering.<\/p>\n

Side Seals and the Guide System<\/h2>\n

Side sealing is where high cycle rates change the rules. Your curtain passes through the guides twice per cycle, and a busy logistics door can log several hundred passes per shift. Any seal that grips the curtain edge becomes a wear part rather than a seal. Compression rubber across a fast-moving edge works on doors that open a few times a day, not on a machine cycling at 0.8–2.5 m\/s.<\/p>\n

The trade answer is brush. Filaments sweep the jamb gap and accept lateral travel without loading the curtain edge. On the bottom edge of our insulated model the same logic appears as a brush-and-wiper astragal, chosen because it tolerates uneven floors that would chew a plain bulb. The physics are the same at both ends: sweep, do not squeeze.<\/p>\n

The seal is only half of the side system, because the guides set the geometry the seal works in. Three things decide whether a side seal can do its job:<\/p>\n