Recommended Wall and Ceiling Protections & Clearances

The 36″ clearance between the stove and combustibles can be reduced considerably if the walls and ceilings are protected with mineral fiber, masonry, or 24 gauge sheet metal spaced out 1 inch from the combustible wall. The space allows air to circulate behind the panel to cool the wall. The spacers must be made of non-combustible material, such as a stack of washers, small diameter pipe, electrical conduit or tubing. Ceramic fence insulators, stacked washers, or a small-diameter pipe will work well, but don’t use copper or aluminum because it will conduct too much heat. Click here for a chart of the National Fire Protection Association’s suggestions for wall protection.

Nail or screw the panel to the wall studs through the hole in the center of the spacer. Use a screw and spacer every 16 inches horizontally and vertically, but do not use any directly behind the stove or connector. Mount the panel 2 inches off the floor, leaving the top and bottom edges open to allow for air circulation.

Protection Materials Recommended Clearance
from Walls
Recommended Clearance
from Ceiling
None 36 inch 36 inch
3 1/2 inch thick Masonry (brick) wall without ventilated air space 24 inch Does not Apply
1/2 inch thick non-combustible insulation board over 1" mineral wool batts, without ventilated air space 18 inch 24 inch
24-gauge sheet metal with or without insulated backing and with ventilated air space 12 inch 18 inch
3 1/2 inch thick masonry (brick) wall with ventilated air space 12 inch Does not Apply
1/2 inch thick non-combustible insulation board with ventilated air space 12 inch 18 inch
Adapted from the American National Standard ANSI/NFPA 2 1 1, Feb. 1984