Arnold9801 Posted June 30, 2022 Share Posted June 30, 2022 I understand it’s best to get smooth ducting to avoid restricting the airflow. Does that mean underground 110mm tubing will be suitable? Link to comment Share on other sites More sharing options...
Bonner Posted July 1, 2022 Share Posted July 1, 2022 What is the ducting for? Underground stuff will do the job but not fit anything else in the system. Rigid plastic ducting is better. Link to comment Share on other sites More sharing options...
crispy_wafer Posted July 1, 2022 Share Posted July 1, 2022 Not sure the orange stuff is UV protected, so may degrade over time, but I guess your application will suggest whether that's a problem or not... Ventilation systems generally use 4,5,6 inch round ducting so you may need to transition. Link to comment Share on other sites More sharing options...
Russell griffiths Posted July 1, 2022 Share Posted July 1, 2022 Ducting for what, mvhr, or to run cables through?? Link to comment Share on other sites More sharing options...
JohnMo Posted July 1, 2022 Share Posted July 1, 2022 If you want to use for MVHR or similar, it looks the same, but internal wall is anti bacterial treated to stop nasty stuff from growing with the correct semiflex duct. Normal underground stuff is a little stiffer and not treated. Link to comment Share on other sites More sharing options...
Arnold9801 Posted July 3, 2022 Author Share Posted July 3, 2022 My ducting will be for the bathrooms to the roof vent. Link to comment Share on other sites More sharing options...
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