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5- Then, from beneath the support, insert the stove pipe adapter and twist-lock it into place.
6- Now, you can add additional chimney sections. Continue adding chimney lengths until a height of
about 2 fet below the next ceiling level. An attic insulation shield must be installed where a chimney
passes from a lower living space into an upper living space or attic space. It is designed to keep
insulation materials away from the chimney. A second attic insulation shield must be installed if your
chimney passes from a lower living space into an upper living space. As wee, you must enclose all
sections of the chimney where is passes through a living space. Elbows (15
o
or 30
o)
are used when
you need to offset your chimney to clear an obstruction or to avoid having to cut joists.
7- Once you have cut through your roof and framed the joists, it is time to work outdoors. Authorities
require that the chimney extend not less than 3 feet above the highest point where it passes through
the roof of a building and not less that 2 feet above any portion of the building within 10 feet. You will
need to install a roof flashing. The roof flashing slides over your chimney pipe and goes under your
shingles. Once you have done that, check that everything is plumb, and nail the flashing into the roof
deck. Seal the joint between the shingles and the plate with silicone.