I use the caulking gun with air duct sealant to get back in the spaces it s hard to reach with the mastic.
Diy duct work attic installing.
It was new when the ac was put in 7 years ago.
Adding heat runs in a basement may change the airflow in the ductwork going to other rooms.
Place ducts on top of joists in a ceiling or attic.
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.
Each register should have its own damper that can be accessed for adjustment.
In this video i use mastic and air duct sealant t.
The take offs may have an inside hammer lock which is a flange that bends over inside the plenum.
Installing flexible duct insulated duct diy 1.
Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water.
Installing flexible or insulated duct is an easy diy project.
I ll show you how to get the job done right.
Supply air duct installation.
I called out the original hvac company and they took a look and said they saw no water.
Step 2 installing the ductwork once you have an idea of where the ductwork should go start with the plenum and screw that into position using duct brackets and suitable screws.
On the floor cut in and attach the rectangular take offs to the front and rear of the plenum.
If the air duct isn t long enough it is possible to add extra length.
The big advantage over a full rigid installation is sound control the installations are quieter than fully rigid ones.
The attic ductwork is flex duct work.
Do it yourself hvac.
Remove existing ductwork where needed.
Take care not to place your duct work too near any strong sources of heat such as that in a hvac device and avoid curling the duct around a sharp point.
Avoid any hot elements such as water heaters heater or stove exhausts or hot water pipes and electrical elements such as junction boxes or.
Install dampers at the registers to adjust airflow.
Raise the plenum up in place and attach with self tapping screws.