ᐅ Roof penetration for a chimney installed on the roof surface
Created on: 9 Dec 2013 12:48
J
jochen35Hello,
We want to install a wood-burning stove with an attached chimney (BW 150) in our single-family home (bungalow). Since our living room does not have an intermediate ceiling and opens directly to the roof, the stainless steel chimney will be routed straight through the roof and sit directly on top of the stove. For aesthetic reasons, we have chosen a brushed stainless steel chimney without clamp bands.
The installation will, of course, be carried out by a professional, whom we plan to hire soon. Since even experienced contractors can make mistakes, I would like to understand what to watch out for myself. Therefore, I have the following questions and would appreciate your answers.
What should be considered for the roof penetration? How must it be constructed to maintain insulation properties and avoid thermal bridging? And how should the vapor barrier and the breathable roofing underlayment be connected to the chimney to prevent moisture intrusion and thus mold growth?
The roof structure from inside to outside is as follows:
16 x 110 mm (0.6 x 4.3 inches) spruce tongue-and-groove boarding > 12.5 mm (0.5 inches) gypsum fire protection board > 20 mm (0.8 inches) wooden battens > 0.20 mm (0.008 inches) PE foil as vapor barrier > 250 mm (10 inches) mineral insulation > 45 x 245 mm (1.8 x 9.6 inches) rafters > breathable roofing underlayment > 25 mm (1 inch) counter battens > 38 x 58 mm (1.5 x 2.3 inches) battens > roof tiles
Regards
jochen35
We want to install a wood-burning stove with an attached chimney (BW 150) in our single-family home (bungalow). Since our living room does not have an intermediate ceiling and opens directly to the roof, the stainless steel chimney will be routed straight through the roof and sit directly on top of the stove. For aesthetic reasons, we have chosen a brushed stainless steel chimney without clamp bands.
The installation will, of course, be carried out by a professional, whom we plan to hire soon. Since even experienced contractors can make mistakes, I would like to understand what to watch out for myself. Therefore, I have the following questions and would appreciate your answers.
What should be considered for the roof penetration? How must it be constructed to maintain insulation properties and avoid thermal bridging? And how should the vapor barrier and the breathable roofing underlayment be connected to the chimney to prevent moisture intrusion and thus mold growth?
The roof structure from inside to outside is as follows:
16 x 110 mm (0.6 x 4.3 inches) spruce tongue-and-groove boarding > 12.5 mm (0.5 inches) gypsum fire protection board > 20 mm (0.8 inches) wooden battens > 0.20 mm (0.008 inches) PE foil as vapor barrier > 250 mm (10 inches) mineral insulation > 45 x 245 mm (1.8 x 9.6 inches) rafters > breathable roofing underlayment > 25 mm (1 inch) counter battens > 38 x 58 mm (1.5 x 2.3 inches) battens > roof tiles
Regards
jochen35
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