Diy Metal Chimney Crown

Use steel support bars to form a grid pattern from one side of the masonry wall to the other.

Diy metal chimney crown.

Lay the form on top of the chimney with the beveled edge down. If the flue is at a height less than 6 inches the crown should be built 2 inches from the flue top. In many situations it is not even recognized as a part of the chimney. But in fact this part of the chimney provides a vital function in keeping your house dry and your chimney working efficiently to remove smoke from your fireplace or stove.

Then lay sheet metal or cement board across the metal supports to form a thin bond break between the chimney crown and the masonry walls. Install the crown step 1. This will create a 1 1 2 inch drip edge when you pour the concrete. Poor crown construction is a leading cause of chimney deterioration and failure.

This one was built in the 1920s and has been missing its original chimney cap for years based on some ideas from the homeowner and a bit of research i came up with this design in fusion 360 an. Whether made of precast or cast in place concrete a properly constructed chimney crown also called a cap or top plate sheds water and seals the top of the chimney. Here in oklahoma city there are a lot of historic homes. Hoist the concrete onto the roof in buckets.

Unfortunately after looking at hundreds of brick chimney on new. Spread evenly using the trowel. Rip a board with a 15 degree level and then nail it to a 1 6 board. Moisten the top of the chimney around the flue.

Diy metal chimney cap for historic home. This serves two purposes. See if the cement holds to the chimney body and then apply more of the mix. For the chimney crown to fulfill its purpose it must be properly shaped and installed.

The 2 4 bottom has to be flush with the frame bottom. But much of the time chimney crowns are poorly built. This piece must be cut into 4 section but allowing the 2 4 to fit into place around the chimney bricks at the top in such a way to create a 2 inch thick cap with a 1 and a half inch overhang. Mix small aggregate concrete.