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Hi,

My wife and I purchased a home a few months ago. The roof is relatively new--only 7-8 years old. However, the flashing around our chimneys wasn't replaced when the roof was replaced. We have a leak in the attic around one of our chimneys, and the roofer said he believes it's the flashing around the chimney. He recommends we get the flashing around all 3 chimneys replaced.

A couple questions: Based on the photos do you think we should replace all 3? And, is it recommended to replace it in the winter months? (We live in Massachusetts.) I think we'll definitely have to replace the one with the leak. But I'm just wondering if we can/should wait for the others.

I know almost nothing about chimney flashing, so anything is helpful.

Thanks.
 

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retired framer
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Did he suggest a cricket or saddle above it. We can see the debris against the chimney, that will hold moisture and add to premature failure of the flashing.

A saddle is simple and not usually more than a couple blocks and a couple wedges of plywood and usually can not be seen from the ground.
 

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You should complain to your realtor for recommending your house inspector.:smile:
Chimneys in valley are tricky to flash. Check the images (search with words "flashing chimney in a valley" or such. It will be good for you to get some idea. Your roofer is right but the results will be how he does the job. Winter, so work won't be easy, esp with cold hands. But it is also roofer's usual down time. Ask for explanation, in detail, and write it down and come back to ask. Tell your roofer that you will be asking for second opinions. If the roofer objects, then look for another.
You can also replace the ridge caps. Is the roof all same shingles? Your ridge caps seem to be regular 3 tab shingles and they will not last as long as the other shingles on the roof. If the roofer says you must install ridge venting, come back and ask about it. Ridge venting, or passive venting, is another story and not always needed.
The crickets, depends on where the chimney is. One photo that seems to show the ridge only about half a foot away, will not need the cricket. There isn't much of space for rain to gather and speed. Valley chimney could use the cricket, but again, depends on how much debris and water can collect there.
 

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retired framer
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49,090 Posts
You should complain to your realtor for recommending your house inspector.:smile:
Chimneys in valley are tricky to flash. Check the images (search with words "flashing chimney in a valley" or such. It will be good for you to get some idea. Your roofer is right but the results will be how he does the job. Winter, so work won't be easy, esp with cold hands. But it is also roofer's usual down time. Ask for explanation, in detail, and write it down and come back to ask. Tell your roofer that you will be asking for second opinions. If the roofer objects, then look for another.
You can also replace the ridge caps. Is the roof all same shingles? Your ridge caps seem to be regular 3 tab shingles and they will not last as long as the other shingles on the roof. If the roofer says you must install ridge venting, come back and ask about it. Ridge venting, or passive venting, is another story and not always needed.
The crickets, depends on where the chimney is. One photo that seems to show the ridge only about half a foot away, will not need the cricket. There isn't much of space for rain to gather and speed. Valley chimney could use the cricket, but again, depends on how much debris and water can collect there.
If we don't build that cricket, roofers here will not finish the roof.

It is about the leaves sitting there. A little heat from the chimney and it is subject to ice damming.
 

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Do you still use the chimney in the valley? The only permanent reliable fix to that one is to remove it.
It can be flashed,but it will never be as reliable as a properly placed chimney.
You'll want a soldered pan in that one, if you can fix an experienced installer it would be ok.
 
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