The top of the chimney should be at least 3 ft 0 92 m above the roof surface.
How far should a flu be installed above a roof.
Jingo123 30 oct 2008 12.
Firstly is it ok for them to install the flu in line with my window.
Minimum clearance from combustible material.
Two things determine chimney draft.
Cut a framing hole at least 10 inches in diameter with a jigsaw tool.
If the pipe is farther than 10 feet from the roof.
Taller chimneys make more draft but chimneys exposed to outside cold don t.
This specification makes sure steep roof slopes are cleared.
Far better that it goes over the roof.
Check the area where you will install the flue pipe.
A flue pipe must never pass through a combustible floor or ceiling or through an attic roof space closet or concealed space.
The minimum clearance may be reduced by 50 percent to 225 mm 9 in if suitable shielding is installed either on the pipe or on the combustible surface.
450 mm 18 in.
2 run the vent pipe up through the roof and install a metal or pvc flashing collar over it.
Run vertical pipe up through the ceiling and roof.
The chimney should extend at least 3 feet above the roof surface it penetrates and 2 feet higher than any roofline or other obstacle within a horizontal distance of 10 feet.
Put the roof opening directly above the exhaust opening on the furnace.
20 mar 2007 messages.
For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m.
Vertical blue line along the left side of the chimney in our photo.