Insulating steam and condensate lines

I'm not sure if it's available outside the US, but see if the paint stores or companies in your area carry cinder or concrete block sealer. Blocks have very porous surfaces that will absorb lots of regular paint. Block sealer is a primer with fiber added to help fill up those pores. It is best applied by brush or roller because it is too thick for most sprayers.

If you can find some, buy just enough to do some tests to see if it will stand up to normal operating conditions.

A simple answer is no. You really need the "AIR" in the insulation. Even if it worked it the cost for multi coats would be very expensive. Coatings are great for protections but low on insulation.

We tried some of these coatings in the paper mill I work at and although they work pretty good on tanks that are in the 200 degree F range we never did get a steam line cool enough that you could put your hand on after coating. We coated the bottom half of a large stainless steel tank and it seems to work well when checked with a heat gun. The cost of the product installed we tried was higher than insulating the traditional way for the benefit it gave on steam lines though. I use a ceramic type coating in my glass furnaces called ITC and this stuff is amazing. It is supposed to reflect 95% of the heat from itself and it really prolongs the life of the furnaces. The other good thing is that it puts a very hard coating on the fire brick surfaces that protect them from molten glass etc. I think the coating you talk about is a ceramic type paint that cures much lower than the ITC (2000 F) that I use.

pipewelder