Remove existing ductwork where needed.
Installing ductwork between floors.
Forget floor insulation run a quick duct line and enjoy your space.
Adding heat runs in a basement may change the airflow in the ductwork going to other rooms.
Install the ceiling register boot image 1 so you will know how long to cut the supply duct.
Attach the galvanized hanging straps at 4 foot intervals by hammering them into the.
When the work is completed install a 14 in.
This size fits just between most floor joists.
Sometimes the best route for a flexible duct run is up and over an obstruction.
Map out your duct path to upper floors before you start cutting any holes.
Run duct work through the hole.
Install dampers at the registers to adjust airflow.
Fit the duct collar over the hole in the main duct and attach it.
Return air grille with a piece of sheet metal attached to the back of the grille that has been painted flat black.
Center it between the joist and screw into place with self tapping screws.
How to bring heat to the floor in a basement.
Most installers report they can get to a 100 sq.
In the basement secure the new duct work to a joist by running a hanger around the duct and attaching it to the joist.
Run ductwork between floor joists whenever possible and anchor it in place with galvanized hanging straps.
If those dampers can t be accessed from below you ll want to install them close enough to the register so that you can reach them through the register opening.
Use a power nut driver to drive self tapping sheet metal screws.
Ducts should be able to run between studs in the wall and then turn into a joist bay the space between two joists.
Attach a second air duct to the first by peeling back the insulation.
Measure the length you need for the supply duct.
But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b.
If the air duct isn t long enough it is possible to add extra length.
The most common size duct used is 14 in.
Area through this access hole.
Cut a hole in the floor just large enough to accommodate the duct work.