Back Filling Fire Rated Door Frames

8 thoughts on “Back Filling Fire Rated Door Frames”

1. 

   Alastair withers December 7, 2019Reply

   Hi just researching best way to back fill Fire rated pressed metal door in precast concrete
   Was looking at using grout and group pump
   Any heads up or good ideas

   • 

     Surefab Admin Post authorDecember 9, 2019Reply

     Hello Alastair,
     Yes, using grout and a grout pump is a common option used to back fill fire rated door frames. The main thing to ensure is that the opening is fully sealed off before backfilling, and that all possible air gaps are filled.
     Hope this helps!
     Surefab Admin

   • 

     Neville De Lisle February 13, 2023Reply

     How do you backfill an existing -/120/30 rated steel door frame & door in a plaster wall.

     • 

       Surefab Admin Post authorMarch 21, 2023Reply

       Hello Neville,
       Thanks for your question.
       We haven’t heard of this being done before, because any form of liquid backfill will pour through the holes in the studs and fill the wall cavity.
       You may have no option but to remove the frame and backfill, and then install it back into the opening.
       Hope this helps.

2. 

   Daniel May 19, 2022Reply

   Hi, Is fire rated expanding foam an acceptable method of backfilling an existing fire door jamb in timber frame construction?

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     Surefab Admin Post authorMay 19, 2022Reply

     Hello Daniel,
     It depends on the brand of door you are using. If you are using a fire core door, fire foam has not been certified for use for backfilling the jamb. The approved backfill options are fire grade plasterboard, mortar, cement grout or LAF Vermitex TH. I hope this helps.

3. 

   Tom August 18, 2023Reply

   Hi there,

   Is it possible to use fire rated expanders foam?
   Either of these options?

   https://www.bowens.com.au/p/h-b-fuller-fulafoam-fire-resistant-expanding-foam/?gclid=Cj0KCQjwrfymBhCTARIsADXTabmhhTIdsYIXmvZnhojYauOJa_QU_uFm9dbMPEy6ebrbe88lOIlnC8UaAjSZEALw_wcB&uom=EA%7C1&volume-mls=750mls

   https://www.bunnings.com.au/sika-750ml-fire-rated-pu-expanding-foam_p1210284?store=6386&gclid=Cj0KCQjwrfymBhCTARIsADXTablm_snC8XR_NYP0vb-qEnK-Nkk7-5WRMCfyTuQel_mLmOrmZUcpCAAaAi2yEALw_wcB&gclsrc=aw.ds

   • 

     Surefab Admin Post authorAugust 21, 2023Reply

     Hello Tom,
     At this stage there are no fire rated expander foams that have been approved for use with Firecore door sets.
     The approved backfill options are fire grade plasterboard, mortar, cement grout or LAF Vermitex TH.