Heatiator BIR42 owner manual Non-combustibleSealant, Flush Hearth Extension Framing

Non-combustible Sealant

After completing the framing and applying the facing mate- rials over the framing, a bead of non-combustible sealant must be used to close off any gaps at the top and sides between the fireplace and hearth.

Non-combustible Sealant

Figure 12.6 Place Non-combustible Sealant

Flush Hearth Extension Framing

•Fireplace must be recessed 3 3/4 in. (95.3 mm) below the finished floor.

•Refer to Figures 12.7 and 12.8.

Note: The bottom of the fireplace opening is 3-3/4 in. (95.3mm) above the bottom of the fireplace. Finished hearth must NOT extend above this level.

Finished

Floor30 in. Min.

Hearth Extension

Bottom of

Fireplace Opening

1 in. (25.4 mm)
Micore and	Non-combustible Finishing Material	Protective Metal
1/2 in. (13 mm)		Hearth Strip
Durock

Figure 12.8 Flush Hearth Extension Side View

Heatilator • Birmingham BIR42 • 4059-308 Rev J • 1/11 43