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Two Ways to Install a Top Mount Chimney Cap

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HomeArticle LibraryHow to Install a Chimney Cap >  Install Top Mount Chimney Cap > 

How to Install a Top Mount Chimney Cap

to the Top Cement Crown of a Chimney

©2011 PennVentures, Inc.
 

How to Install a Top-Mount Chimney Cap with Adhesive or with Masonry Screws.

If you are installing a top mount chimney cap,

  • First assemble the four sides. 
  • Second, attach the top lid to the chimney cap.
  • And finally, affix your chimney cap to the chimney.

First assemble the four sides of a top mounting chimney cap.
Some brands of top-mount chimney caps have sides that join with a simple hinge-and pin, others have sides that assemble with an easy, tool-free locking system, and still other join with nuts and bolts.

Along the bottom of each of the four chimney cap sides are the flanges that actually attach to the top crown of your chimney. Construction Adhesive

You can use either adhesive or Tapcon screws (masonry anchors) and bits to attach Tapcon Masonry Anchors and Tapcon Drill Bitthe flanges to the chimney. Some chimney cap manufacturers provide you with either the adhesive or the Tapcons when you buy your chimney cap. Or you can purchase them separately here.


To use the adhesive to install a top mount chimney cap, place the chimney cap whereOne way to attach a top mounting chimney cap is with adhesive and a caulking gun. you want it to be on your chimney crown (the concrete area surrounding the flue or flues) and bend the flange around the bottom of the chimney cap so that it conforms to the chimney crown. 

Draw a line around the perimeter of the flange. Now, use your caulking gun to lay a 3/8 inch thick bead of just inside the line. Leave 1/4 inch gaps in the adhesive bead at each corner of the chimney cap. Move the caulking gun from side to side as you draw it along making a wavy line about an inch wide from edge to edge, not a tight zig-zag. Press the flange of the chimney cap down into the bead of adhesive. 

If you wish, you can use a putty knife to smooth the adhesive that oozes through the holes in the flange, but this is not necessary

 

 

 

 

 

 

To install a top mount chimney cap with Tapcon masonry anchors, you will need to buy a 3/16" masonry bit and enough Tapcon screws Tapcon Masonry Screwsto mount your chimney cap if the manufacturer has not provided them with your chimney cap. Choose screws that are "diameter and 1 " or 1 " long. You will need enough screws to place one every running foot around your chimney cap, but at least one on each side. For example, if your chimney cap is 17 by 24 inches, use one screw in the middle of each 17 inch side, a screw at each end of each 24 inch side, and one in the middle of each 24 inch side.

To install, position the chimney cap where you want it to be on the chimney crown and conform the flange to the chimney crown. Holding the chimney cap firmly in place, drill through the predrilled holes in the flanges and into the chimney crown with the 3/16" masonry bit. As you drill each hole, partially tighten a screw in it to hold the chimney cap in position. Then, finish tightening all the screws. Chimney Cap flanges turned inside of mesh screen. Attach the lid last if you are using this chimney cap mounting configuration.

Some top mount chimney caps can be assembled with their flanges facing inside of the screen box. If you have selected this mounting technique, simply remove the lid to screw in the Tapcons and then replace it.

If you don't yet have your chimney cap, take the FireplaceMall Chimney Cap EASY MEASURE Guide up on the roof with you to help you correctly measure your flues and chimney for the type of chimney cap you need.

 

 

 

 

 

 

 

 

 

Chimney Caps
More Installation Directions for...

How to Install a Chimney Cap that Fit Over the Flue

How to Install a Chimney Cap That Fits In a Round Clay Flue

How to Install a Chimney Cap That Fits In a Round Metal Flue

How to Install a Chimney Cap That Attaches to the Vertical Sides of the Chimney
(Outside Mount)

 

 

 

 

 

 

 

 

 

 

 

 

 

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