Drywall is a popular building material used for interior walls and ceilings. It is made of gypsum, a soft mineral that is sandwiched between two layers of paper. When the drywall is installed, it is important to smooth out any rough spots and imperfections before painting or wallpapering. This is where sandpaper comes in. However, choosing the right grit of sandpaper is crucial to achieving a smooth and even finish. In this article, we will discuss what grit sandpaper to use on drywall.
What is Grit Sandpaper?
Grit refers to the number of abrasive particles per square inch on sandpaper. The higher the number, the finer the grit. Sandpapers are available in various grits, ranging from coarse to fine. Coarse grits have lower numbers, such as 40 or 60, and are used for removing paint, varnish, and heavy rust. Fine grits have higher numbers, such as 220 or 320, and are used for smoothing surfaces and removing small imperfections.
What Grit Sandpaper To Use on Drywall?
When it comes to drywall, the most commonly used grits are 120 and 150. These are considered medium-fine grits and are ideal for smoothing out joint compounds and other minor imperfections. 120-grit sandpaper is generally recommended for the initial sanding of joint compound, while 150-grit sandpaper can be used for final sanding to achieve a smooth finish.
However, if the drywall surface is rough or has visible seams and imperfections, coarser grit sandpaper such as 80 or 100 can be used to level out the surface. After the initial sanding, a finer grit sandpaper should be used to achieve a smooth finish.
It is important to note that using too coarse a grit sandpaper can damage the drywall surface while using too fine a grit may not effectively remove imperfections. Therefore, it is essential to choose the right grit for the job.
In summary, when it comes to sanding drywall, it is recommended to use medium-fine grit sandpaper such as 120 or 150 for smoothing out joint compounds and achieving a smooth finish. However, if the surface is rough or has visible imperfections, a coarser grit such as 80 or 100 can be used for initial sanding. Remember to use a light touch and avoid applying too much pressure to avoid damaging the drywall surface.
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