To achieve the best result from doing a paint job, a professional painter usually will do a surface preparation. Surface preparation is one of the most important factors that can affect the quality, performance, and service life of a paint job. Commonly, there are two common surface preparation methods which are used. They are waterblasting and sandblasting. So, today we are going to give a brief explanation about the difference between the two, so that you can choose whether you are going to buy a water blaster or sand blaster. Here are some of the important points that you should know.
Waterblasting is very well-known for its efficiency, safety, and eco-friendly way to clean and maintain different surfaces. Aside from that, waterblasting also has other important benefits, such as:
- You can use water blaster to clean and prepare a wide variety of exterior painted surfaces without chemicals and without the risk of releasing unsafe contaminants into the air.
- With waterblasting, you don’t have to worry about any chemical-residue that may be contained in your cleaning material, as this method will leave no residue behind. Therefore, you don’t have to rinse the surface again.
- You can also adjust the waterblasting equipment for each different purpose, for example, you can adjust the pressure and switch between different fan nozzles, according to each job. For instance, you can easily reduce the pressure to wash away dust, cobwebs, and contaminants, and increase it to remove adhesive and multi-layered coating systems, as well as expose and clean out cracks, so that appropriate repairs can be made and open surface pores to deliver suitable profiles for the application of new protective coating systems.
- Waterblasting ensures surfaces clean, chemical free, and ready for re-use (after they dry out completely).
However, mistakenly handling the equipment may cause localized damage and excessive erosion of surfaces. Therefore, it is strongly suggested that you read the manual book carefully and thoroughly before usage. After all, the benefits above show that water blasting works efficiently to remove mud stain, concrete stain, and moss, on your deck, floor, and many more.
One of the most common surface preparation methods for metal is sandblasting, as it can be successfully and safely used to remove dust, dirt, and old paint from different surfaces. Generally, there are two sandblasting methods:
- Wet Sandblasting: this technique uses a high-powered stream of water mixed with sand or other abrasive material
- Dry Sandblasting: it involves the use of highly pressurized air in conjunction with abrasives. Both methods deliver the following benefits:
- Works easier to clean and prepare different surfaces for painting.
- Just like water blaster, the degree of sandblaster can also be adjusted to perform a wide variety of operations, from light cleaning (removing dust, dirt, grit, rust and old paint), to deep cutting (shaping, roughening, and smoothing surfaces).
- In terms of power, sandblasting is more powerful than sandpapering; this will enable you to work faster.
In some cases, you may also need to use pressure washing or steam cleaning in conjunction with sandblasting if you want to prepare metal for painting. Bear in mind that dry sandblasting is usually more dangerous than wet sandblasting, as it will produce hazardous dust clouds.
Now that you know the difference between the two, which one suits your requirements best? Remember that each project may require different specification; therefore, it is important to check your project specification before deciding to use waterblasting or sandblasting method.