Where can I get 13by 13 Terracotta flue?

[Dmitry]

I want to extend my terracotta flue before getting the new liner in. It's 13 by 13. I have three flues and the middle should be extended or cut to fit certain top plate I like.
I did a quick online search and didn't see anything on sale. is there some specializing local store I should be looking for?
Thanks.

 

[begreen]

Masonry supply store

 

[Dmitry]

Masonry supply store

This is my current setup. I want to use the same top plate as on the right. Do you think adding one more terracotta tile would be feasible in this situation? As a side benefit that will extend my liner that's on the short side. Thanks.

 

[begreen]

It's generally not a good idea to have an upstair wood burner flue terminate at the same height as a basement or lower floor one. Smoke can siphon from one down the other. The upper floor one should be extended 12-18".

Top plate for terra cotta tile

Terra Cotta Clay Tile Top Plate for Flexible Chimney Liners & Rain Caps - Rockford Chimney

The terra cotta top plate fastens to the clay tile that protrudes from the chimney. The flexible liner & rain cap easily connect with a band clamp system.

www.rockfordchimneysupply.com

Extender

Chimney Flue Extender for Flexible Chimney Liner Kits - Rockford Chimney

Use the chimney flue extender to offset two chimney liner caps or extend your flue. Made in the USA with quick connect clamp system for easy install.

www.rockfordchimneysupply.com

 

[bigealta]

You can pretty easily cut the new terra cotta. I did it as my 2 flues were at the same height. I cut it about 1/3 to get 2 different length pieces. Then mortared them in place.

The terra cotta on my chimney was only just above the crown, so i built the crown up to cover part of the new terra cotta pieces.

 

[Dmitry]

It's generally not a good idea to have an upstair wood burner flue terminate at the same height as a basement or lower floor one. Smoke can siphon from one down the other. The upper floor one should be extended 12-18".

Top plate for terra cotta tile

Terra Cotta Clay Tile Top Plate for Flexible Chimney Liners & Rain Caps - Rockford Chimney

The terra cotta top plate fastens to the clay tile that protrudes from the chimney. The flexible liner & rain cap easily connect with a band clamp system.

www.rockfordchimneysupply.com

Extender

Chimney Flue Extender for Flexible Chimney Liner Kits - Rockford Chimney

Use the chimney flue extender to offset two chimney liner caps or extend your flue. Made in the USA with quick connect clamp system for easy install.

www.rockfordchimneysupply.com

Yeah, it actually happened couple of times, but not too often

 

[Dmitry]

You can pretty easily cut the new terra cotta. I did it as my 2 flues were at the same height. I cut it about 1/3 to get 2 different length pieces. Then mortared them in place.

The terra cotta on my chimney was only just above the crown, so i built the crown up to cover part of the new terra cotta pieces.

What did you use to mortar it?

 

[Dmitry]

It's generally not a good idea to have an upstair wood burner flue terminate at the same height as a basement or lower floor one. Smoke can siphon from one down the other. The upper floor one should be extended 12-18".

Top plate for terra cotta tile

Terra Cotta Clay Tile Top Plate for Flexible Chimney Liners & Rain Caps - Rockford Chimney

The terra cotta top plate fastens to the clay tile that protrudes from the chimney. The flexible liner & rain cap easily connect with a band clamp system.

www.rockfordchimneysupply.com

Extender

Chimney Flue Extender for Flexible Chimney Liner Kits - Rockford Chimney

Use the chimney flue extender to offset two chimney liner caps or extend your flue. Made in the USA with quick connect clamp system for easy install.

www.rockfordchimneysupply.com

I want to install the terracotta and chimney extender. Is it ok to have terracotta 12-inch exposed completely? My chimney is only 13 ft. So I'm battling for every inch

 

[bigealta]

I'm not a chimney expert. my 9"x12" terracotta piece came in a 3 ft. section i think.
I used regular mortar i think? Premix bag.

Full exposed flue? not sure about that? You might be able to use some sort of collar?
If it's only a foot maybe no big deal, but if you are going thru the trouble i'd at least try for 2 feet. terracotta.

 

[Dmitry]

Good idea about the collar, as the old one is beat up and has RTV silicone on it. I wish I could do the silicon instead of cement.
Any ideas for the collar ?

 

[bigealta]

My tenant made a 6 to 8 inch tall plywood collar just screwed together for the exposed joint of an added 2' tall 6x6" terracotta flue tile and it lasted for 15 plus years before it rotted away.
I highly doubt that it meets any code in any way but the concept works.
I doubt the chimney guys would recommend this though?