Prepare Fireplace for New Construction
At 19:14 in
How To Transform an old Fireplace On a Budget
What happens here
After demolition, prepare the fireplace opening. Since the original brick veneer was recessed, apply a layer of N-type mortar to the existing brick surfaces to create a flush, even base. This ensures a consistent plane for the subsequent layers. Once the mortar is dry, cut and attach cement board panels (e.g., USG Durock Cement Board or HardieBacker) to the fireplace face and hearth using screws. Cement board provides a stable, moisture-resistant, and fire-resistant substrate ideal for stone veneer, preventing issues like delamination or cracking common with direct application to drywall.
Goal: This step involves applying mortar to even out the recessed brick sides of the fireplace opening and installing cement board panels as a suitable substrate for the new stone veneer.
Tools and materials
- Angle Grinder (with diamond blade)
- Drill
- Level
- Trowel
- Utility Knife
- Cement Board Panels
- Cement Board Screws
- N-Type Mortar
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