Question on chimney chase top repair

[Ted Swirsky]

I'm in Southern New Jersey. My gas chimney is leaking water when it rains and the first repair company I had look at it said the seal on the chase top (the big plate that covers the chimney with a hole in it for the center pipe) (See

for a picture) had some gaps in the seal and is getting rusty.

He caulked it for now and said he thinks I can get a few more years out of it if they "wirebrush complete chase top then seal it with silicone, paint with aluminum/fiberglass flashing sealer". That's $200. He guessed a new stainless steel chase top would be $700-$800.

I don't know anything about aluminum/fiberglass flashing sealer but it sounds more like a caulk than a paint. ???

My question is: Is his job worth doing and will it really hold for a few more years?

(Yes, I know I should go for the new SS replacement but that's not my question.)

Thanks,

Ted

[DanG]

I would think that elastomeric roof sealant would be a better product.

at Aluminum emulsion and elastomeric acrylic .

(top posted for your convenience) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Keep the whole world singing . . . . DanG (remove the sevens) [e-mail]