How Far Should A Flu Be Installed Above A Roof

Taller chimneys make more draft but chimneys exposed to outside cold don t.

How far should a flu be installed above a roof. A flue pipe must never pass through a combustible floor or ceiling or through an attic roof space closet or concealed space. Put the roof opening directly above the exhaust opening on the furnace. This specification makes sure steep roof slopes are cleared. Minimum clearance from combustible material.

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. Far better that it goes over the roof. If the pipe is farther than 10 feet from the roof. Jingo123 30 oct 2008 12.

20 mar 2007 messages. Check the area where you will install the flue pipe. Run vertical pipe up through the ceiling and roof. 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.

The top of a chimney pipe must extend at least 2 feet above the peak of the roof if the pipe is within 10 feet of the peak. 2 run the vent pipe up through the roof and install a metal or pvc flashing collar over it. Cut a framing hole at least 10 inches in diameter with a jigsaw tool. For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m.

Personally if i was doing this install i would chose a vertical flue kit which terminates above the roof line try and take a photo of the plume. Pull away insulation or install an insulation shield to keep the area clear around the pipe. 450 mm 18 in. The top of the chimney should be at least 3 ft 0 92 m above the roof surface.