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chimney crown repair

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11-15-06, 11:43 AM

Andy Beet

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chimney crown repair

Hi,
I have 2 terracotta type flue's protruding from my chimney (one for the fireplace and the other for the central heating system). I am located in massachusetts.

The two flues are about 1 inch apart. In the gap between them where they meet the crown, no mortar exists. So there is about a 1 inch by 8 inch opening in the crown of my chimney in between the two flues.

How should i fix this? Any help would be greatly appreciated, especially as the cold months near.

thanks
Andy

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11-15-06, 11:11 PM

Frank99

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Mix 1 portland cement and 2 parts sand and water just enough to make it like peanut butter, and fill in the crack, you can use a stick to push it in and smooth it out.
Frank

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11-15-06, 11:17 PM

Ed Imeduc

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Location: Mountain Williams Missouri

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You want to build it up a little higher there with the new cement . So any rain water runs out of there.

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11-16-06, 07:59 AM

Andy Beet

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thanks guys. i'll do that.

I do have a question though. It seems like the gap is maybe a little large and i fear that the cement will just fall down the gap. Can i bridge the gap with something then cement over that?

cheers
and thanks for the quick response
Andy

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11-16-06, 08:38 AM

Ed Imeduc

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You could like jam some fiberglass insulation down in it some. Then cement over it

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Bricks, Masonry, Cinder Block, Paving & Walking Stones, Asphalt and Concrete
Expansion gaps in concrete driveway

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bigfred on Nov 14, 2006

I have a concrete driveway that has several thin cracks across it. It's my opinion that they occurred because there are not enough expansion gaps. I'm considering adding some additional expansion gaps across the concrete, but I have a few questions: 1) How many feet apart should the expansion gaps be? The driveway is 11 feet wide. 2) I've read that an expanion gap is just 1 inch deep. Is this right? I thought it had to go all the way down to the ground. 3) How wide should the gaps be? The ones already in my driveway look like about 1/2 inch. Thanks for your input.Read More
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