My current cooker hood ducting consists of white PVC hose connected to the hood's 120mm adaptor by tape. It travels up through a hole in the kitchen ceiling to the loft where it travels 1.8m horizontally along the loft insulation before turning 90 degrees downward to a hole in the loft floor/outside ceiling and a standard grille.
Although it's lasted for 15 years, I gather that rigid piping makes for a greater flow and reduced air resistance.
I intend to use 2 metres of 125mm rigid ducting and a couple of 90 degree round bends.
That covers the ducting travelling through the loft but what's recommended/best for the area from the ceiling hole above the cooker hood straight down 40-50cm to the 120mm adaptor?
Is a type of flexible aluminium ducting recommended for the final run?
Also, is it OK to use 3m foil duct tape on the 90 degree round bends in the loft or a specific type of sealant?
Finally, how would the 'final run' be connected to the round bend situated 40-50cm above the appliance?
Thanks in advance.
Although it's lasted for 15 years, I gather that rigid piping makes for a greater flow and reduced air resistance.
I intend to use 2 metres of 125mm rigid ducting and a couple of 90 degree round bends.
That covers the ducting travelling through the loft but what's recommended/best for the area from the ceiling hole above the cooker hood straight down 40-50cm to the 120mm adaptor?
Is a type of flexible aluminium ducting recommended for the final run?
Also, is it OK to use 3m foil duct tape on the 90 degree round bends in the loft or a specific type of sealant?
Finally, how would the 'final run' be connected to the round bend situated 40-50cm above the appliance?
Thanks in advance.