roof vents placed behind 4ft walls in finished attic dont do squat for ventilation. no place for soffit vents, siding is asbestos so gable vents too pricey.
Interior chimneys are at least 4" larger in all four directions than the flue they contain. A chimney containing a 12"x12" clay flue liner must be at least 20" by 20". Combustible materials must be ke ... read more