How to Install a Backdraft Damper

What You'll Need
Backdraft damper
Measuring device
Protective overalls
Working gloves

Installing a backdraft damper improves the draw in fireplaces that have chimneys. Depending on design of the fireplace and chimney, they can be mounted vertically or horizontally to enhance performance. Backdraft dampers are commonly made from galvanized steel. They are fitted with light weight aluminum damper blades and are available for 4 inch to 16 inch ducting.

Step 1 – Take Measurements

Measure the dimensions of the chimney, this can be done at the point where backdraft damper is to be fixed. The top part of a chimey is the ideal place to install backdraft dampers. Use a measuring tape to get the length and the width of the upper most part of the chimney. The measurements can be used to buy an appliance with a proper fit.

Step 2 – Assemble Necessary Material

Buy the correct size backdraft damper from hardware or home supplies stores. Get high quality products as they last longer and they perform better too.

Step 3 – Locate Appropriate Position

One of the best locations to install a backdraft damper is outside the home, find a suitable position on the wall or roof. They can be installed  to keep debris, leaves, pest and other materials from entering the duct.

Depending on the position of duct, the appliance can be fitted in a vertically or horizontally.

Step 4 – Install Device

When installing the device on the roof, place the ladder in a safe position. Make sure it is secure. This should also be done when fixing the device on high walls. Ensure that the operations of the chimney are turned off to avoid injuries.

Depending on the design of the chimney, use a wrench or pliers to remove any cover or material placed where the backdraft damper is to be installed. Carefully mount the device on the chimney and make sure it is held securely. Tighten it and test the blades and the spring board to make sure they open and close correctly. Secure it in position so that it does not get blown away when releasing pressure. 

Step 4 – Finish Up

Close up the chimney. Check if the backdraft damper is working correctly by turning on the fireplace. Keep inspecting it regularly to ensure that it is good condition.

It is advisable to inspect the fireplace and the chimney as they could interfere with the operations of the device. Be on the look out for clogs, blockages or gaps on the chimney. Correct the dimensions of the chimney if it is too long or narrow. Poorly designed chimneys can cause the entire system not to perform effectively and efficiently.