What Grit Sandpaper For Wood Before Painting

What Grit Sandpaper for Wood Before Painting?


A sandpaper comes in different shapes and sizes. This material is rated numerically based on the size of the grit particles that it has. The lower the grit number of the sandpaper, the coarser it is. And the higher number of the grit, the finer the sandpaper is. If you are working with sensitive materials then it is better to start with a fine grit sandpaper. This will help prevent any damage to the surface that you are working on. Determining the different sandpaper grit sizes is also important to ensure that you are using the right one.

The different grits of sandpaper

  • A 40-80 grit sandpaper is the one that is used when you are sanding or removing stock quickly. If you are using a belt sander in sanding the edge of a sticking door then a coarse sandpaper is needed by you.
  • A 100-150 grit sandpaper or also known as a medium grit sandpaper is the most common one to be used as a starting point in any types of projects. They can be used in sanding unfinished wood as well as removing old varnish.
  • The 180-220 grit sandpaper is one of the finer grits that you can find in the market. Its sandpaper is great for removing scratches left by coarser grits on unfinished wood. This grit is also used in lightly sanding in between coats of paint.
  • The 320 to 400 grit sandpaper are the ones that are used for light sanding in between coats of finish. They are also being used to sand metal and other hard surfaces.

Understanding the importance of sanding

Once you are planning to paint wood trimmings, furniture or just about any wood surface then you need to know the importance of sanding. Sanding is the one that will make sure that the surface that you are painting will be free from any imperfections. This is true especially when you are working on wood.

Wood tends to have some lumps and bumps and that is why making the surface smooth will guarantee that you will have great results after painting.

You will need to use various grits of sandpaper depending on the surface that you are working on.

Using the right grit will guarantee a smooth surface. If you find any large rough spots on the surface on the wood then a coarse sandpaper is what you need to use.

Once the major rough surface has been removed, you can then gradually move to finer grits to achieve that smooth surface. Once you are able to achieve a smooth surface, see to it that you will be removing any dust off the surface.

Using a tack cloth especially in smaller wooden items is handy in removing any dust particles in the surface.


Choosing the right grit sandpaper to work on is crucial. This will be part of your preparation prior to painting your wooden surface. You need to remember though that this is only part of the whole procedure. Familiarizing yourself with the whole reduce will ensure that you will get the best result in the end.

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