Block off plate construction

[tumm21]

Is it okay to use galvanized sheet metal for a block off plate. Also is 28 gauge sheet-metal okay?

 

[tumm21]

No one?

 

[hwdemers]

You can you any metal, but 28 gauge is pretty floppy, usually a sheat metal
shop can make em for 30 or 40 out of stainless

 

[fossil]

Yes, it's OK. Anything sufficiently rigid and non-combustible. Once it's in there, properly fitted and secured and insulated, the gauge of the sheet metal isn't going to matter. Rick

 

[BrotherBart]

I use the eight buck piece of galvie from the duct work section of Lowe's. Works a treat.

 

[Excavator]

i used 2 pieces of fireproof board and attached to damper frame with home made toggle bolt plus some fire insulation to seal around liner.
This is 8 inch liner and i cut out damper frame and some brick as needed to make liner fit straight down

 

[tumm21]

Thanks so much guys. I have had this insert for 6 years now and I am hoping this block off plate makes a big difference. I'm not sure being its an interior chimney but I want to get it off my mind