Standard Clearances for Solid Fuel Burning Appliances
If the manufacturer has recommended clearances, follow the manufacturers’ recommendations. If not, follow the clearances below.
Acceptable Clearances from Unprotected Combustible Surfaces
Kind of appliance
Room heater, fireplaces, stoves, combinations
Furnaces (gravity and forced air)
Residential Appliances (Steam Boilers, Water Boilers)
Outdoor wood stoves
Single wall stovepipe(not acceptable for exterior use)
Double wall stovepipe(not acceptable for exterior use)
Above top of casing of appliance, above top
and sides of furnace plenum or bonnet
36 in.
18 in.
6 in.
50 feet from any building
Not applicable
Not applicable
From Front
36 in.
48 in.
48 in.
From Back
36 in.
18 in.
6 in.
From Sides
36 in.
18 in.
6 in.
18 in.
6 in.
18 in.
6 in.
18 in.
6 in.
Acceptable Reduced Clearances when Using Protective Materials
Combustible Surface Covering
3½ inch thick masonry wall without ventilated airspace
½ inch thick non-combustible insulation board over 1 inch glass fiber or mineral wool batts
without ventilated airspace.
3½ inch thick masonry wall with 1 inch ventilated air space
24 gauge sheet metal with 1 inch ventilated air space
½ inch thick non-combustible insulation board with 1 inch ventilated airspace
1 inch glass fiber or mineral wool batts sandwiched between two sheets of 24 gauge sheet
metal with 1 inch airspace.
Woodland Mutual
As Ceiling
Protector (Stove)
--24 in.
Wall or Ceiling
(Stovepipe)
12 in.
9 in.
12 in.
12 in.
12 in.
12 in.
--18 in.
18 in.
18 in.
9 in.
9 in.
9 in.
6 in.
Wood Heat Questionnaire
Name of Insured: ____________________________________
1. Type of heating unit:
As Wall
Protector (Stove)
24 in.
18 in.
Policy No. _____________________
Date ________________
___ Stove (Radiant or Circulating) ___Free Standing Fireplace ___ Central Furnace ___ Add on Furnace
2. Name of Manufacturer _________________________________________________________________________________________
3. Location: _____ Dwelling
4. Location in building:
_____ Garage
_____ Other building (describe) __
______ Basement
_______ Ground Floor
______ Other_____________________
5. Distance from unit to nearest unprotected wall/ceiling ________________________________________________________________
6. Distance from unit to nearest protected wall/ceiling __________________________________________________________________
7. If manufacturer recommends clearances, does installation meet those recommendations? ___________________________________
8. Distance from unit to floor.
_____________
Describe protective pad _____________________________________
9. If combustible floor, does non-combustible pad extend 18” past loading door? ____________________________________________
10. Type of chimney ____ Brick/Block ____ Prefabricated Metal ____ Other (describe)
A. If brick/block, indicate liner:
____ Clay tile
___ Metal
____
None
B. If prefabricated metal, does the chimney meet or exceed UL103HT specifications? _____ Yes _____ No
Do not bind if chimney does not meet UL103HT specifications.
C. Date chimney was last cleaned? ____________ Method of cleaning
_____________________________________
D. If a masonry chimney, is seam at top of the chimney between liner and brick/block weathertight? _______________________
11. Stovepipe
A. Diameter ______Length _______Number of elbows ______Single wall____ Double wall_____
Double walled stovepipes are required when the stovepipe makes a direct
vertical connection between the wood burning appliance and the chimney.
B. Distance from stovepipe to nearest combustible material (including ceiling) _________________
C. Does stovepipe pass through any walls or ceilings? __________
If so, does the pass-through meet or exceed the UL103HT specifications? _____ Yes _____ No
Do not bind if pass through does not meet UL103HT specifications.
D. Are all stovepipe joints fastened with 3 sheet metal screws in each joint? __________
12. Not acceptable: Double barrel stoves and/or installations with heat reclaimer devices.
Include at least two photographs of the wood stove installation. One photograph MUST include a view
of the STOVEPIPE TO CHIMNEY CONNECTION AND ANY WALL OR CEILING PASS THROUGHS.
01/13