beautypg.com

Raised hearth extension framing – Hearth and Home Technologies I100 User Manual

Page 40

background image

40

IMPORTANT! Hearth extension design must be

determined before installation of fireplace.

20 in. Min.

Hearth Extension

Floor

Non-combustible

Framing Material

Non-combustible

Finishing Material

Protective Metal

Hearth Strips

1/2 in. Micore

or equivalent

insulation

Figure 11.3 Raised Platform Hearth Extension Detail

Raised Hearth Extension Framing

The hearth framing must be constructed of non-combusti-

ble materials and placed on an HX4 or equivalent material

(Figures 11.2-11.4). When creating the platform, allow for

the thickness of the non-combustible finishing materials

(Figure 11.5).

1/2 in. Micore

or equivalent

Hearth must

extend at least

12 in. beyond

the fireplace

opening on both

sides.

20 in. Min.

Non-combustible

Framing Material

Figure 11.4 Raised Platform Hearth Extension-Framing Materials

Non-combustible

Finishing Materials

Figure 11.5 Raised Platform Hearth Extension-Finishing Materi-

als

2 in. (51 mm)

required

Continuous,

non-combustible sealant

Tile, stone or other

non-combustible material

Floor constructed of wood or

other combustible material

1/2 in. Micore

or equivalent

insulation

(see Table 11.2)

Fireplace Protective

Metal Hearth

Strip

Figure 11.2 Hearth Extension Construction

Heatilator • I100 • 35144 • Rev AG 7/12