Installed a zero-clearance fireplace with a galvanized chimney.
Initially thought I would build a chase around it, but discarded that
plan for structural reasons (8 ft of chimney extends through a 4/12 roof
near the gutter line so there is very little to anchor it to and a
square chase offers a lot more wind face than a round stack.) Would
like to paint it black, or light grey to match the siding.
Can galv be painted? Do I just treat it like any other bare metal?
Anyone have any experience doing so?
FWIW We have regularly painted the galvanized conduit, the meter box, into
which the glass topped meter plugs, the few feet of conduit below it, which
happened to be non galvanized, (although nobody noticed it)! and the goose
neck below that which turns and goes into the basement etc. i.e. the metal
piping which contains our AC electrical service. We have used the same oil
based 'stain', not paint, as our 10 inch pine siding; probably painted it
four or five times in some 30+ years. So it's same colour as the house.
Looks fine and doesn't rust in our corrosive one kilometre from the North
Only thing though; does your galvanized pipe get hot? If so that's
Is it double layer pipe, how hot does it get. Get an IR thermometer
from Radioshack. Paints have temp limits, Black stove paint can be used,
you can also get other high temp paints for motors at auto stores. But
true Stove paint is only in a few colors. I have an automotive paint
from Duplicolor that says 1200 f , My black stove paint says 1000 f. You
must clean off the oils real good with strong soap, talk to a paint
store on cleaning.
My local hardware sells primer for aluminum, zinc, and galvanized metal.
Just clean the surface with 409 or fantastic, dry, swipe with thinner-wetted
rag, and dry off. Then prime with the specialty primer. Better see how hot
the outer chimney gets, first, though - may need special paint for hot
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