Insulating above insert with roxul

[tumm21]

I just got some roxul from Home Depot and want to know how much insulation should I put up above the stove. Should I just cram as much as I can or just a little

 

[Swedishchef]

I do not have an insert however I can speak about Roxul: cramming it will lose the insulation value. If you can put a layer of it (3.5 inches), it will add an insulating value of R14 which is significant.

However, some others who are much more experienced in this will chime in and be able to guide you more...

ANdrew

 

[mellow]

Check out my post on my insulated fireplace.

 

[stejus]

I stuffed my smoke shelf and fireplace damper where the line passes recently with Roxul. I just cut strips (5" x 16") and stuffed as many of them I could into the smoke shelf. Then I cut out a two peices that fit flush against the area where the liner passes through. This is held up by steel insulation hangers. It makes a huge difference in heat. There's another post out here from someone that has pictures of what I am talking about.

 

[woodmiser]

I think I got three full batts in mine. I just kept ripping chunks off and stuffing them in.

 

[Vic99]

Here's a thread that another posted for roxul and a block off:

https://www.hearth.com/econtent/index.php/forums/viewthread/67219/

I stuffed with roxul last month and I notice a difference. You may need to stuff to be sure you you get it in all the crevices. Some chimneys are not perfect rectangles.