Step 7. Secure flashing by nailing along the perimeter into roof using 8d nails or equivalent fasteners. If shingled roof, slide upper end and sides of roof flash- ing under shingles (trim if necessary), seal the top and both sides of the flashing to the roof with roof caulking. Cover fastener heads with roof caulking (Figure 24).
Figure 24 |
Step 8. The standard Security Chimneys FTF8 roof flashing assemblies include a storm collar. Slide the storm collar over outer chimney, rest on flashing spacers and align with top surface of flashing. Insert tab in slot, pull tight and bend tab back over slot. Seal storm collar to outer chimney with roof caulking or mastic around entire circumference of pipe. Also add extra roof caulking to the tab/slot area to seal completely against water penetration (Figure 25). Check all joints very carefully to ensure no water intrusion can take place.
Locking Band
Mastic
Or Roof
Caulking
Note: If chimney extends more than 8' above roof surface, guy wires are also recommended. Use three (3) guy wires, attach to locking band assembly, extend and secure to roof in a trian- gular pattern (Figure 26). Guy wires are not supplied by the manufacturer.
Roof Ridge |
120° |
Figure 26 |
Step 10. Using a CTD Termination:
1.Hold the CTD over top of last chimney section (Figure 27).
2.Center inner slip section in inner flue pipe- slip down.
CTD |
|
Termination | Chimney |
|
Figure 27
3.Center outer locking section over outer flue pipe. Push down until locking tabs are firmly engaged.
4.Pull up slightly on CTD to ensure locking joint has firmly engaged.
Note: It is recommended that all exterior exposed metal fireplace components; such as terminations, flashings, storm collars and/or flue be painted with a premium quality, high temperature, rust preventative paint designed for metal. This is especially important when installations are made in abnormally adverse or corrosive environments; such as near lakes, oceans or in areas with consistently high humidity conditions. Consult the paint manu- facturers instructions for proper preparation and application.
TEN FOOT RULE SUMMARY
The minimum chimney height above the roof and/or to adjacent walls and buildings is speci- fied by all major building codes.
If the horizontal distance from the peak of the roof is less then 10', the top of the chimney must be at least 2' above the peak of the roof.
If the horizontal distance from the chimney edge to the peak of the roof is more than 10' a chimney height reference point is established on the roof surface 10' horizontally from the chimney edge. The top of the chimney must be at least 2' above this reference point. In all cases, the chimney cannot be less then 3' above the roof at the edge of the chimney.
The 2' in 10' rule is necessary in the interest of safety but does not ensure
10
Figure 25
Step 9. FTF locking bands, Model FLB, may be required if the chimney extends too high above the roof flashing. As a general rule, if the chimney extends more than 6' above the roof flashing, the use of locking bands is advisable to strengthen the chimney assembly. Align the locking band at the chimney joint. Locking bands wrap around pipe joints equally covering the joints of both pipe sections. Use the nut provided and TIGHTEN snugly. Do not overtighten as this might damage the chimney section (refer to Figure 25).
Less than |
|
10' (3m) |
|
2' (610mm) Min. |
|
3' (914mm) |
|
Min. |
|
10' (3m) | 3' (914mm) |
| Min. |
Figure 28 |
|
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
