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sqwerle 02-04-2011 10:12 AM

Stucco on Wood Chimney leak
I have a chimney made of wood with a stucco overlay. I would like to know the best way to do flashing and counter flashing so I dont end up with another leak in a couple of years. Should I cut away the bottom of the stucco and screw the flashing to the wood or can I just screw it through the stucco without any cutting? By the way I am putting a cricket on the top of it.

And one more question, can I use one solid sheet of metal for the flashing then the counter flashing or should I be making the steps in the flashing or counter flashing?

Thanks in advance for any help.

Roofmaster417 02-04-2011 11:06 PM

Lots of qualified pro's here to help but could you take a few pix of your problem?:thumbsup:

Slyfox 02-05-2011 06:12 AM

Depends on what type of roof you have and what region your in.

(With an asphalt/fiberglass shingle roof 'in my region' you would first use step flashing's than counter flash with a solid piece of metal.)

Once you build your cricket/saddle strike a line on the stucco 'following the roof plane' 3 1/2" high above the sheathing.

Cut that '3 1/2"' of stucco out and install lumber "a 3 1/2" strip of plywood together with a 2x4" laying on it's side to completely fill the void and fasten to the wooden chase.

(In my region there will be a foam board behind the stucco, if yours only has a toothed felt behind it than the plywood I mentioned may/may not be needed with the 2x4, you want the newly installed lumber to be as even with the stucco as possible.)

Install your sub flashing "step or solid" with the metal reaching near the top of that lumber, not higher than it tho.

Install your counter flashing, it should start 1/8" too 1/4" above the deck run upward to the point were the newly installed lumber meets the stucco and turn inward and insert at least 1" to 1 5/8".

Face fasten counter flashing to the newly installed lumber, caulk appropriately and re inspect everything to make sure all is tight and neat.

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