Select your Cowl

There are many different types of chimney cowls for the use with different types of chimneys. Stainless steel is a recommended material for its resistance to corrosion from rain. If the installation is only going to cap a single flue, we recommend a cowl that slides on. This type of cowl may at most need you to tighten some bolts to help secure it. If you have purchased a round tile or steel flue, an inside mount cowl with brackets that will push down into the flue will be best. If you have multiple flues however, you may need a chimney cowl that connects to the outside of your chimney.

Access the Roof

If you can reach the chimney from you rooftop, installing the chimney cap should be a fairly easy process. If it is not, attempt to reach the chimney using a safe ladder from ground level.

Install the Chimney Cowl

Inside mount cowl on a tile flue, you should caulk it into place with silicone sealant to the chimney. If you are using an inside mount chimney cowl on a metal flue though, do not use the sealant, this is because metal chimney flues get too hot and can damage the sealant. A chimney cowl that attaches to the chimney, you should plan the spacing of the anchors before connecting the chimney cap. It is recommended you use at least 1 anchor on each side of the chimney you are installing the cowl on. The anchors should be at least 1 foot apart. Slide the chimney cowl onto the chimney and straighten it using the level. The manufacturer of the cowl may provide adhesive to hold the cowl, follow all the provided directions for the application of the adhesive. If the chimney cowl must be screwed on, hold the cowl tight against the masonry and drill through both. Afterwards, sink the masonry anchor.

Insert the first screw into the bracket and tighten it into place. Drill the next hole on the same side as the first. Use the level and work around the perimeter of the chimney, tightening consecutive screws as you proceed.