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Packing (firestopping)

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Title: Packing (firestopping)  
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Subject: Mineral wool, Flush toilet, Packing, Firestop, Building insulation, Trap (plumbing), Joint (building), Sleeve (construction)
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Packing (firestopping)

For the disambiguation page, see Packing (disambiguation).

Packing is the process and/or the materials used in filling both service penetrations and building joints with backer materials as approved components within a firestop.

Purpose

Packing with inherently fire-resistive materials, such as rockwool or ceramic fibre is intended to protect sealants that would, on their own, be consumed by the fire. Lesser packing, such as foam backer rod or fibreglass are used simply to hold up materials that can survive fire testing on their own. In both cases, the packing is placed in such a way as to control the exact depth of the materials that top off the seal.

Special care

Proper packing is particularly important with self-leveling sealants. If the packing is not tight enough, the expensive caulking will drip out of the hole. If the packing surface is not straight enough, the thickness of the caulking will be wrong.

If firestopping takes place on plumbing pipes that have not yet been tested, packing can move the pipes and interfere with the plumbing. It is thus important for the work to be co-ordinated between plumbers and firestoppers.

See also

External links

  • Packing as used in a patented firestop product patent
  • Grainger Firestop Packing
  • Ward Manufacturing UL Listing, Item 4A is Packing Material for Firestop
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