How Far Should A Flu Be Installed Above A Roof

Minimum clearance from combustible material.

How far should a flu be installed above a roof.

For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m. The top of the chimney should be at least 3 ft 0 92 m above the roof surface. Vertical blue line along the left side of the chimney in our photo. Taller chimneys make more draft but chimneys exposed to outside cold don t.

Run vertical pipe up through the ceiling and roof. If the pipe is farther than 10 feet from the roof. Check the area where you will install the flue pipe. Cut a framing hole at least 10 inches in diameter with a jigsaw tool.

Two things determine chimney draft. 2 run the vent pipe up through the roof and install a metal or pvc flashing collar over it. 20 mar 2007 messages. 450 mm 18 in.

A flue pipe must never pass through a combustible floor or ceiling or through an attic roof space closet or concealed space. 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. 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. Put the roof opening directly above the exhaust opening on the furnace.

This specification makes sure steep roof slopes are cleared. Far better that it goes over the 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. Pull away insulation or install an insulation shield to keep the area clear around the pipe.