Installation Guide

© 2021 United States Stove Company
27
VENTING INSTALLATION
Roof
Flashing
Wall
Strap
45° Elbows
Ceiling Firestop
Offset with Wall Strap and 45° Elbows
If area above is a room, install firestop
above framed hole as shown
Firestop
Nails
9
"
9
"
If area above is not a room, install
firestop below framed hole as shown
Nails
Firestop
NOTE: You must increase vent height for steep
roof pitches. Nearby trees, adjoining roof lines,
steep pitched roofs, and other similar factors may
cause poor draft or down-drafting in high winds.
Increasing the vent height may solve this problem.
NOTE: If the vent pipe passes through any occupied
areas above the rst oor, including storage spaces
and closets, you must enclose pipe. You may
frame and sheetrock the enclosure with standard
construction material. Make sure to meet the
minimum allowable clearances to combustibles.
Do not ll any of the required air spaces with
insulation.
CATHEDRAL CEILING INSTALLATION
IMPORTANT:
REVIEW ALL INFORMATION ON PREVIOUS
PAGE BEFORE PLANNING THIS INSTALLATION.
CATHEDRAL CEILING INSTALLATIONS CAN BE
VERY TRICKY
Cathedral
Ceiling
Support
Box
2" min.
Below
Finished
Ceiling
Cathedral Ceiling Support Box Installation
Cut Hole 1/8" Larger
Than Support Box When
Projected Onto Roofline
Installed Cathedral Ceiling
Support Box
Apply
Non-hardening
Mastic Under all
Edges of Support
Box Before Nailing
1. Remove shingles or other roof covering as
necessary to cut the rectangular hole for the
support box. Mark the outline of the cathedral
ceiling support box on the roof sheathing using
the locating hole as a center point.
2. Cut the hole 1/8” larger than the support box
outline.
3. Lower the support box through the hole in
the roof until the bottom of the box extends
at least 2” (50 mm) below the ceiling. Align the
support box vertically and horizontally using
a level. Temporarily tack the support box in
place through the inside walls and into the roof
sheeting.
4. Using tin snips, cut the support box from the
top corners down to the roof line and fold the
resulting aps over the roof sheeting. Apply
a bead of non-hardening mastic around the
top edges of the support box to make a seal
between the box and the roof. Nail in place with
roong nails. Remove any combustible material
that might be inside the support box.
5. Complete the cathedral ceiling installation by
following the same procedures outlines in Steps
2 through 6 for Flat Ceiling Installation.