FP16
– Saint-Laurent - Installation and Operation Manual
35
Figure 43 : Flat roof
•
Deviations should be avoided whenever possible, especially the most pronounced. Each deviation adds
some restriction to the chimney system and may lead to draft problems.
•
If the chimney extends higher than 5 ft. (1.5 m) above its point of contact with the roof, it must be
secured using a roof brace.
•
A rain cap must be installed on top of the chimney.
•
Cut and frame square holes in all floors, ceilings, and roof that the chimney will go through to provide a
2" (50 mm) minimum clearance between the chimney and any combustible materials. Do not fill this 2
space with insulation or any other combustible material.
•
Portions of the chimney which may extend through accessible spaces must be enclosed to avoid contact
with combustible materials or damage the chimney.
•
For installations where more than one chimney is located in the same non-chase or within the same
area, we suggest that their terminations be separated by at least 16" (410 mm) horizontally, and 18"
(460 mm) vertically. This separation is to prevent smoke migrating from one chimney to another.
18"
457.21mm
18"
457.2mm
16"
406.4mm
16"
406.4mm
18"
457.2mm
Figure 44 : Multiple Chimneys
