Block off plate for SS liner?

[wahoowad]

I'm looking at SS liners on eBay (particularly the Rockford unit). It looks like the liner drops down and connects to a tee, then connects horizontally to the back of my woodstove. I don't see a block-off plate provided and thought this was very desirable when lining an existing chimney. Do folks just not install a block off plate? It seems like a lot of air would escape one way or another (out of the house or down the chimney). Do they stuff some kaowool around it?

Thanks

 

[MrGriz]

The blockoff plate is something that you have to fabricate to fit your application. It's really not that difficult; if you can install the rest yourself, you can make the blockoff. Take a look in the Wiki section; there is a good article on how to fabricate and install a blockoff.

You can insulate the top of the plate with kaowool, but kaowool on its own is not a sufficient blockoff. Also, don't use fiberglass insulation on top of or around the blockoff, it will not handle the heat.