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What are the tips for renovating your cast iron radiator?

Despite their old age, Cast iron radiators still appeal to many households, for their vintage touch, their long life, and the warm atmosphere they provide.
But unfortunately, they tend to oxidize over time, their paint starts to peel, and rust begins to form.
That's why we have to think to renovate its radiator often enough, so as not to lose this aesthetic asset in his house. The renovation of a cast iron radiator, is done following a precise process, consisting of several steps. Continue reading this article for more details on the renovation procedure.

What is a cast iron radiator?

It is important to know that cast iron is a material known for :

  • Its resistance;
  • Its good heating inertia;
  • Its ease of maintenance.

This is why it is used for radiators, which can be either electric or hot water.
For the radiator in hot water meltingThe water is heated by a central heating system and then sent through a hydraulic circuit for distribution.
For the radiator made of electric cast ironIt contains electrical resistances, which can store heat, it works either by radiation or by convection.

Steps to renovate a cast iron radiator

The renovation of a cast iron radiator is done according to a set of steps. First of all, you have to dismantle your radiator, in order to have access to all the places. Then comes the stripping, which consists of scraping off the flaking paint, then cleaning the dust with a brush, in order to soak your radiator in a bath of chemical stripper.
This bath will soften the old paint that remains, and remove the impurities accumulated inside the radiator.
Then remove the stripped paint, and let the radiator dry after cleaning.
The third step, is to put the radiator under testThese tests are used to check the tightness of the radiator and to detect leaks.

Now you can get rid of the rust, and this is the fourth step. The procedure is quite simple, you just need to apply with a brush, a rust converter.
It is a transparent product, which dyes as it dries, it will remove unsightly rust stains, which may appear over time.
The last one is the painting tourThe first is the undercoat, which will protect the radiator from rusting, and which will make your paint last over time.
The second is the special radiator paint, which is heat resistant. This paint can be applied either with a brush or a spray gun.
Before reassembling your radiator, make sure that it has had enough time to dry for the type of paint you have used.

Maintenance of a cast iron radiator

Renovating your radiator will bring it back to life, but if you neglect it, over time its condition will deteriorate even more than before, which is why maintenance is very important.
The maintenance procedure consists of clean regularlyYou can also add a small amount of detergent to your radiator with a damp cloth. mild detergent, if there are any stains.
Monitoring is also very important, it allows to be aware of leaks which can be very dangerous.
From time to time, think about giving your radiator a little facelift, to do this apply a small coat of paint, using a brush with a bent ferrule, it allows you to reach the difficult areas.
Draining is essential for a cast iron radiator, it avoids the mud that can hinder the circulation of water.

Also remember to bleed the air trapped in the radiator, to avoid circulation noise.

If you are away, switch your boiler to frost protection position, and drain your system completely.
For the purging and emptying, we advise you to call a professional, because these actions are quite complicated.
Thermostatic valves are often attacked by limescale, which sometimes blocks them, or makes them turn in a vacuum, so they must be changed from time to time, but sometimes they are blocked by an accumulation of paint layer, in this case you must remove the residues to With a wire brush.

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