Heat Riser Rusted After Painting
I refinished a heat riser pipe in my bathroom a year ago. I stripped off the decades of paint using a combination of elbow grease + tools: putty knife, electric grinder with wire wheel, and sandpaper. I stripped that pipe GOOD and got it down to bare metal. I cleaned the pipe well with mineral…
I refinished a heat riser pipe in my bathroom a year ago. I stripped off the decades of paint using a combination of elbow grease + tools: putty knife, electric grinder with wire wheel, and sandpaper. I stripped that pipe GOOD and got it down to bare metal.
I cleaned the pipe well with mineral spirits before painting. I used heat resistant brush on paint, silver colored.
A little over a year later, the paint is starting to flake and separate from the pipe…I can see rust coming through the paint film. Gah!
It was a BIG MESS to strip that heat riser and I ended up painting the bathroom afterwards. I am not looking forward to redoing this, but I must. I also have a couple other heat risers to paint in other rooms as well as three radiators (the radiators will be disconnected and painted in another location.
Can anyone offer some prep/paint tips for the heat risers so as to avoid the rusting?
Note that the heat riser WAS NOT primed prior to painting with heat paint. It was my impression that no primer was needed and that the point of the heat paint was that it is formulated as a very thin paint film so as to transmit more heat , and a primer would add to the film thickness, negating that function. Also, is it Ok to paint the risers when the heat is on, as it;s heating season now?
Thanks for the jute/rope recommendations. I’ll give it a try.
I’ve always used automobile manifold paint.
I wrapped the heat riser in my bathroom, which we kept hitting our butts on [ouch!], with plain old laundry line/rope, which I picked up at a hardware store. Cheap and simple to do, as long as the heat isn’t on.
The paint I used was heat paint made for the purpose, in a solvent base, NOT latex.
If a primer is recommended, what brand primer???
Thanks for the Benjamin Moore recommendation, but I do not want a GLOSS paint. Do you know if that same paint is in this application in a flat or matte sheen?
No experience with paint, but since it has come up … here are some how tos on wrapping pipes in jute:
http://www.apartmenttherapy.com/ny/how-to/how-to-wrap-your-hot-pipes-with-rope-015526
http://www.instructables.com/id/Handlebar-barwrapgrips—whipping-and-shellac-cov/
I’ve seen them wrapped in jute rope but presumably that takes away from their ability to heat the room. Maybe wrapped to just above little finger reach would work.
I have several of these [peeling] in my apartment and I’ve often wondered if they can be wrapped in something that would not only protect the kids from heat but also look good and not easily torn or damaged by little fingers. Anyone have any ideas?
I painted two of my stripped (sand-blasted)radiators with Rustoleum spray primer and then used a silver spray rustoleum over it. They look perfect. My contractor painted two of my stripped radiators with ONLY the silver rustoleum – and now rust is starting to show through. Do not skip the primer. Also – definitely do not paint risers or radiators while the heat is on.
I looked in my files and about a year ago I called Benjamin Moore’s Technical Division with this exact question
They recommend the following Benjamin Moore paint:
P-26: DTM High Gloss Enamel Superspec HP.
Ed Kopel Architects, PC