Cast-iron baths still do not lose their popularity. However, if you have a cast-iron bath that has been standing for many years, then for sure it has lost its former appearance, and the enamel has ceased to be perfectly smooth. Enamel on a cast-iron bath is saved no more than 10 years.
Enamel on a cast-iron bath is saved no more than 10 years.
At the factory, enamel technology for cast iron and steel baths is quite simple. The outer surface of the bath is heated to high temperatures, and the enamel powder is applied to the inner surface, which is caked with it. Then the procedure is repeated. The result is a smooth glossy surface. At home, this work, of course, not done. However, there are still ways to restore the old cast iron bath.
Restoration of the enamel surface of the bath with your own hands is a rather difficult process. It includes 2 stages: surface preparation and coating.
Create a smooth surface near a cast iron bath in two ways: apply a two-component enamel or coat it with liquid acrylic.
Reasons for wear of enamel
The enamelled surface of the bath is subject to wear over time, the reasons are two:
- use of detergents, which include abrasive substances and chlorine;
- use of chemical means for washing the sewer.
With the periodic use of such tools, the enamel becomes thinner, roughness and rust appear on the surface.
Preparation for restoration
Restoration of the enamel cast iron bath begins with preparation.
To grind the bath you can use a drill with a special nozzle.
Regardless of the type of bath you choose, the preparation of the bath will be the same. And the more qualitative it will be performed, the better the result of restoration of the enamel bath.
To carry out restoration work to restore the enamel cast iron bath you will need such tools and materials:
- grinding machine or a drill with a grinding nozzle;
- abrasive powder;
- rust converter;
- brushes with natural bristles;
- lint-free cloth;
- two-component enamel;
- gloves and respirator.
The order of performance of works:
Rust in a cast iron bath is cleaned by grinding.
- Thoroughly wash and degrease the surface of the bath with the use of any strong detergent (for example, "Pemolux").
- Clean the surface with a grinder with a cord brush for metal with the addition of detergent to make it rough. Observe the safety rules for working with electric tools. Try not to damage the bath itself. Mopping consists in cleaning the bottom of the bath from dirt, hammered into the pores of the old enamel.
- In the presence of rust on the bath, you can use a special converter to clean the metal from rusty stains.
- After cleaning, rinse the surface of the bath with an acidic or alkaline agent, then rinse with water. Means with acid washed off easily, but over the washing of alkaline will have to work a little, because they are removed from the surface more difficult.
- Check to see if the surface is degreased. To do this, open the water and allow it to drain. It should roll down and do not form droplets on the surface.
- Warm the bath a little with warm water, and when it dries, treat the surface with a solvent. Do not use white spirit for this, because it has a fatty base. Again, warm the bath with water and allow it to dry. Wipe it with a lint-free cloth.
Application of enamel
Restoration of the bath enamel will require a hard flute brush made of natural bristles with a width of at least 70 mm. The hairs from the new brush can get out, so use a paint knife during work to remove them.
The order of works:
Application of enamel на ванну нужно начинать с ее краев.
- According to the instruction, mix the enamel with the hardener. It is recommended to divide the enamel portion into 2 halves so that the second half does not thicken while working on one layer. Simplify the work on the restoration of enamel, making it more flexible, you can, if you add 646 solvent in the amount of 10% of the total mass of enamel.
- Staining the bath with enamel start from the edges. Lubricate them as carefully as possible.
- Next, proceed to paint the sides of the bath, brushing the strip to the bottom from top to bottom. At the same time, carefully spread out the enamel strip, making transverse strokes.
- Thoroughly paint the bottom of the bath with enamel, paying special attention to the place of draining.
- Once finished with the first layer, proceed to the enamel dilution for the second one.
- Similarly, cover the bath with a second layer of enamel. Pour the rest of the enamel on the bottom of the bath and distribute it evenly.
- Wait 15 minutes and check to see if any leaks have formed on the bath. They can be gently brushed with the movements from the bottom up. Repeat this procedure after a while if necessary.
- At the end of the work, the bath should be closed for several days to dry.
The recommended holding time before operation is at least 1 week. This time is necessary for complete polymerization of the enamel.
Serve a new enameled bath surface will be about 6-8 years.
Application of liquid acrylic
This method of restoring the old type of cast-iron bath appeared relatively recently, but it is already very popular. The material, which is a liquid two-component acrylic, is called stakril. It is designed specifically to restore the smooth surface of the baths. It includes acrylic and hardener, which combine to polymerize. Stakril, applied to the surface of the bath, forms a strong acrylic film 4-6 mm thick.
The advantages of this restoration material in comparison with enamel are undeniable. It has several properties, due to which it is possible to restore the bath quickly and effectively:
- optimal viscosity, which makes it easy to apply acrylic coating, the thickness of which on the walls of the bath is 4 mm, at the bottom - up to 6 mm;
- the fluidity of the stakryl provides an independent enveloping of the surface and forms an even layer on it;
- Due to delayed polymerization during the work, you do not have to worry about the rapid hardening of the material.
After complete hardening of the stakry, the surface acquires high strength characteristics, which are several times greater than the usual enamel.
The order of works:
- Place a container under the drain to which liquid acrylic will drain.
- Prepare the bath for the coating with the stakryl, as described above.
- Mix the acrylic compound with the hardener.
- Fill the bath with the joint of the bath and tile.
- Next, proceed to pour the edges along the perimeter of the bath, gradually pouring its entire surface to the bottom.
- Remove the air bubbles with the brush. Do not worry about the bands that make up the brush, they will be smoothed out after a while.
The filler should be filled continuously, so choose a container of sufficient size. Do not allow shortage of material, it is better to pour a large amount, excess will flow into the container under the drain hole.
Bath will be ready for use after 1-4 days, depending on the type of stakriel. The longer the drying period, the better the surface.
The service life of the stakril coating is up to 20 years.