Installing twin wall flue through the house

Installation twin wall flue through the house

Floor passage - Wooden floor

The picture right shows a chimney through a house with a wooden floor. 

The connection from the single wall pipe to double wall can be solved in 2 ways:

  • With the Adaptor to twin wall flue pipe, which goes into the enamel pipe (
  • Insulated ceiling adaptor, where the enamel pipe goes into the adaptor, to give an esthetic connection 

The passage through the floor can be done with 2 ventilated firestop plates:


Flue pipe through floor

 Safety distances

Installation norms set a minimum distance between the single wall enamel pipes and both the wooden roof and floor as 3 times the diameter (of the pipe) and never less than 375 mm. Below are the equivalent vertical separation values (height d): 

Diameter                              Min distance
130/150/180 mm                  375 mm
200 mm                                395 mm

The minimum distance between the insulated chimney's outer wall and the combustible materials is 60 mm (G60). 

Installation instructions

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