A freshly taped wall requires adequate preparation before painting. Some people think that the mere act of preparing a taped wall is actually sanding a drywall. You will be surprised that the preparation also covers the joint compound that was initially used for taping. For a fact, sanding is not much of a complex task. The only set back is that it is tiring and dusty over time. You can easily sand a taped wall. However, a little skill and care is required to make taped seams disappear under a paint coat. That means you should pay attention to the type of sandpaper used. Essentially, sandpaper should not clog during sanding.
Sandpapers are available in both industrial and commercial grades. You will hardly find industrial grade sandpaper in an ordinary hardware store. Typically, you will find three types of sandpapers: garnet paper (tarnish-brown), silicon-carbide paper (black wet/dry sand paper) and aluminum-oxide paper (gray). The colors make it easy to identify them. Both aluminum-oxide and garnet sandpapers are actually open-coat papers. This property makes them ideal for drywalls as they hardly clog when used. Between the two options, aluminum-oxide paper is more preferable as it wears at a slower rate and lasts longer. Its thicker substrate makes it tear-resistant.
Evaluating sandpaper grit
The sandpaper grit goes a long way to determine the effectiveness of sandpaper’s abrasive action. Therefore, sandpaper with a higher grit number will give you a finer action as compared to sandpaper with a low grit number. When you go to a hardware store or consult a general home contractor, you will find that grits below 100 are usually not ideal for use in drywalls. This also applies to grits that are above 220, as they clog easily even though they leave barely visible scratches on a drywall. Recommendable grits range from 120 to 150. They are suitable for rough-sanding drywalls.
Tools for sanding task
There are two tools that can help you to sand a drywall. Do not pay attention to the belt sander as it will not make much of a difference. Hand sanders are ideal because they have a flat pad and work effectively on walls that are accessible without a ladder. Pole sanders are ideal in cases where both the wall and ceiling are higher. You can also get drywall finishers that come with sanding sponges. Sanding sponges are easy to manipulate as compared to a hand sander.
Sanding for the best outcome
You can use a number of sanding tips to get the best outcome for your drywall. First, you need a good dust mask for health reasons. During sanding, you cannot help copious amount of fine dust that floods the air. You also need to ensure that there is proper lighting. You do not want to miss any defect before and after sanding. A work light is a perfect complement for overhead light. With these two, you can spot subtle depression, ridges and other defects that may be present. While sanding, ensure you move the light around for a better view.
Finishing a drywall takes nearly four days. The first essential step in finishing is sanding. Sanding helps prepare the drywall for paint application. Therefore, you need to be very careful during this important stage. When you sand the drywall properly, you will not have visible defects when you start painting. More often than not, when you use the right lighting option, you will be able to identify these less obvious defects that become much visible after painting. Working with general home contractors is good choice when you want to make a drywall finishing project successful.