How to patch hole in brick after removing gas line in a wood-burning fireplace

  • Active since 1995, is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.


New Member
Feb 25, 2022
I have two fireplaces that both has gas appliances in them. Ive removed the appliances and removed the gas lines. However, now Im left with a hole in each firebox (in the brick side wall) that Im not sure how to fill.

What product(s) are available to fill these holes, approximately 1.5" holes? Ive seen things like Rutland's Fireplace mortar that comes in a tube (like caulk). Ive thought about just regular mortar, but not sure if thats rated for high temps or if there is a high temp mortar already available?

Im trying to avoid buying too much product. So what advice or productscan you share to help with endeavor.

Thanks in advance!
Last edited:


Full Time RVer
Staff member
Dec 2, 2008
Wherever we're parked