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Old 10-15-2010, 11:06 AM
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Default Exposed Isulation?

I have a gap of about 11/4" between my brick arch and the entrance to the stove (Casa2G110 from FB). I understand I need this to allow the stove to expand without breaking. But, the gap is filled with insulation blanket, which looks a little funny and exposes the insulation. Can the gap be covered with something? My brick layer says mortar would be stronger than the stove casting, so if the casting expands, the stove might break. Any suggestions?
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Old 10-16-2010, 01:54 PM
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Default Re: Exposed Isulation?

See the attached photo of the exposed insulation between the oven casting and the brick. Any suggestions would be appreciated.

Karl
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Old 10-18-2010, 08:33 AM
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Default Re: Exposed Isulation?

High temp Silicone will work nicely.
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Old 10-18-2010, 10:13 AM
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Default Re: Exposed Isulation?

How about a long single band of flat steel bar stock (or aluminum?) bent to shape? The spring action of the bar should hold itself there securely within the arch with enough room for expansion and heat transfer should minimal or insignificant.
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Last edited by fxpose; 10-18-2010 at 10:56 AM.
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Old 10-18-2010, 10:14 AM
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Default Re: Exposed Isulation?

Thanks! You wouldn't have any brand recommendations for the silicone, would you?

Karl

Last edited by kmrice; 10-18-2010 at 10:20 AM. Reason: Clarify which answer I was responding to.
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Old 10-18-2010, 01:15 PM
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Default Re: Exposed Isulation?

Any thoughts on whether the gap could just be filled in with mortar? My bricklayer is concerned that the gap might be too wide for silicone.

Karl
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Old 10-18-2010, 01:27 PM
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Default Re: Exposed Isulation?

Depending on the thickness, mortar there will most likely just crack and pieces might fall on the landing area.
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Old 10-18-2010, 01:30 PM
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Default Re: Exposed Isulation?

Thanks. I'm not too concerned about mortar cracking - what worries me is the mortar not cracking and the casting the oven is made out of, or the brick, cracking. Any thoughts on whether that is likely?

Karl
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Old 10-18-2010, 06:33 PM
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Default Re: Exposed Isulation?

Hello kmrice,

Hmmmmmmm...... I'd take the practical approach. If my shirt became "untucked', I'd just tuck it back in. Push the insulation back and fill the area with brick slices and mortar. You will want to create a thermal break so the oven and arch don't contact. I'm not seeing a fatal flaw here, though there may be one unseen. It appears the insulation blanket simply got into a place where it could get exposed.

In examining the matter further, the gap/insulation became obvious due to a construction anomaly. The cosmetic fix above may suffice for a long time.

Cheers,
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Old 10-18-2010, 06:51 PM
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Default Re: Exposed Isulation?

A brass strip might make a good transition: you could attach it with the high-temp silicone so you wouldn't have to mess with masonry anchors. It would nicely brown up with exposure to heat.
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