What to Use for Block-Off Plate

[searay220]

So should I put as much Roxul up into the void as possible or just enough to seal the opening just above the blockoff plate?

 

[lml999]

So should I put as much Roxul up into the void as possible or just enough to seal the opening just above the blockoff plate?

I stuffed mine full. Didn't take much Roxul, it's actually pretty tight up there.

 

[Hogwildz]

The plate stops air transfer, the Roxul helps keep the heat from transferring.
Put as much Roxul as you want up there, just make sure you get a block off plate below it for an air seal.

 

[searay220]

Thank You great information very helpful

 

[searay220]

Ok so I had my first fire today after installing a blockoff plate. I kept the top surround piece off to make sure everthing was working well and notice how much heat was reflecting back into the room from that opening. I then put the surround back on and lost the heat from that area obviously. I was wondering about install some type of vents on that surround plate. What do you think has anyone done this?

 

[lml999]

Ok so I had my first fire today after installing a blockoff plate. I kept the top surround piece off to make sure everthing was working well and notice how much heat was reflecting back into the room from that opening. I then put the surround back on and lost the heat from that area obviously. I was wondering about install some type of vents on that surround plate. What do you think has anyone done this?

Search is your friend. Try this thread.

 

[searay220]

What did you use for vents?

 

[jatoxico]

I simply pulled the stove out 1/2" so the surround is not tight to the block to let that trapped heat out.

 

[searay220]

You didn't install those vents on the top surround?

 

[jatoxico]

No. The 1/2" gap across the width of the surround adds up to probably about 20 square inches so lets out good amount of heat.

 

[lml999]

What did you use for vents?

There is a link to a vent supplier in the thread I mentioned earlier.

 

[searay220]

There is a link to a vent supplier in the thread I mentioned earlier.

I couldn't find the link for the vents. Is there any drawbacks to open up and vent the upper surround plate and take advantage of the heat trapped behind the surround? I would think the manufacturer would of done this if it makes things better.

 

[lml999]

I couldn't find the link for the vents. Is there any drawbacks to open up and vent the upper surround plate and take advantage of the heat trapped behind the surround? I would think the manufacturer would of done this if it makes things better.

Check post #16 in the referenced thread.

Manufacturers generally assume that no blocking plate will be installed, so the trim plate helps keep the draft from coming out into the house. It doesn't do a particularly good job of this, especially when the stove is cold.

 

[searay220]

Thank You I found it.
Yes your probably correct about the blocking plate. How are the vents working out for you?

 

[BrotherBart]

If you are running the blower and have a block off plate heat ain't escaping anywhere but into the living space. The block off plate is just keeping the shroud from shucking the heat up the chimney before it is blown out into the room.

 

[lml999]

Thank You I found it.
Yes your probably correct about the blocking plate. How are the vents working out for you?

Read the rest of the thread...

 

[searay220]

I do have a blower and a newly install blockoff plate. Your right about the only place for the heat to go is into the living space but installing a couple of nice looking vents I think would help move the heat easier.
I never realized how much heat was being lost up the chimney until I installed the blockoff plate and insulated.