Roof to brick flashing

Old 09-25-06, 09:14 AM
bjj is offline
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Roof to brick flashing

We have had some leaks from the flashing that goes from the shingle roof to the vertical brick wall. (same thing around the chimmney). Water hits the brick wall and runs down, apparently behind the flashing. When I went on line I saw several sites that recommended a lip of the flashing be be caulked into a channel cut into the mortar on the brick. Is this the best way to install this type of flashing? I am really looking for a job that will not require repeated caulking every couple of years. Bart
Old 10-23-06, 06:46 PM
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Yes, a lip of the lead flashing is supposed to be pointed directly into the chimmney with morter not caulking.

Last edited by DIYaddict; 10-24-06 at 07:00 AM. Reason: removed quote as it's unnecessary to quote the entire post that's directly above yours
Old 10-24-06, 06:38 AM
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Counter flashing

When flashing roof to brick you should use Counterflashing. Counterflashing sheds water to the step/continuous flashing and shingles below. At the top edge a lip is created and embedded with caulk or mortar into the brick surface as you mentioned previously. It is not adhered along the bottom edge which is overlaps the flashing below. This method has several advantages; one of which is that it overcomes issues with settling of the chimney and roof, which are on seperate foundations.
Old 10-26-06, 03:42 PM
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i just completed this job two weeks ago.

went to local box store and purchased a kit that contained enough flashing to do a large chimney (mine is small).

the kit contained what is called "step flashing" that is applied underneath a full sheet of flashing.

all i can say is, no wonder the chimney leaked. the idiots who put the new roof on prior to my purchase of the home hardly put any flashing around the chimney (no warranty and was done by owners sons).

anyway, this job was much easier than i expected and took approx 3hrs.
Old 10-26-06, 03:58 PM
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I take it you put all new step shingles there and a new counter flashing down over them. Might also look at the cap on the chimmney This if not good can let water on down into the brick and come out below. So you think you have a leak in the flashing.

Old 11-08-06, 07:54 AM
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This is interesting. Most of the chimney flashing in our neighborhood is not tucked into the mortar on top, but simply adhered to the brick with some type of compound!

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