Sanding for a textured surface.

[Downaski]

When applying a textured finish, sometimes the base coat doesn’t seem to adhere evenly, especially in certain areas. How much sanding is needed to create a better surface for adhesion?

[FatimaandAhmed]

Hi Downaski!

For most surfaces, light sanding with medium-grit sandpaper (100-150) is enough to roughen up glossy areas or smooth out minor imperfections. If the surface is already fairly even, fine-grit sandpaper (180-220) can help without being too abrasive. The key is not to over-sand; you just want to create enough texture for the base coat to grip without damaging the wall.

After sanding, make sure to clean the surface thoroughly with a damp cloth or tack cloth to remove all the dust, as this can also interfere with adhesion. For heavily textured walls or surfaces that have been previously painted with glossy or oil-based paint, applying a primer after sanding might be necessary to create a uniform base.

What type of surface are you working with? If it’s something like glossy paint, bare drywall, or a previously textured wall, the prep steps might vary slightly.

[Downaski]

Hey, thanks for the tips! The light sanding sounds like it should do the trick. I’m working with a wall that’s got a bit of old paint, and it’s not too smooth in some areas. Do you think I should focus more on the spots that feel rough, or should I lightly sand the entire surface to create an even texture? Also, I’ve heard mixed things about primers, are they always recommended after sanding, or are there cases where they aren’t necessary?

[FatimaandAhmed]

Since you’re going for a textured finish, I’d suggest lightly sanding the entire surface to create an even base. Pay extra attention to rough or uneven spots, as these can show through the texture later. You don’t need to go too heavy with the sanding, just enough to smooth out problem areas and give the surface a little "tooth" for better adhesion.

As for primers, they can be particularly helpful with textured finishes. A primer creates a uniform surface, which is key because textures tend to emphasize any imperfections underneath. If the old paint is glossy or if there are patches of uneven absorption (like areas where bare wall is exposed), a primer will even things out and help the texture stick consistently. However, if the old paint is matte and the wall feels solid and smooth after sanding, you might be able to skip the primer, depending on the product you're using.

Have you decided on the type of texture? It can make a difference in how much prep work you might need!

[Downaski]

I’m definitely leaning towards an orange peel texture; it’s subtle but adds a nice, soft touch to the walls. I like that it gives some depth without being too bold, and it feels like a great middle ground. I’m hoping it’ll be a good fit for the space I’m working on. Thanks for the prep advice! For orange peel, is there anything else I should watch out for?

[FatimaandAhmed]

Orange peel texture is a great choice, it adds that bit of character without being too overpowering. One thing to keep in mind is getting the right consistency for the texture mix (if you're doing it yourself). If it’s too thick, it might clog the sprayer; too thin, and it won’t give you that nice, even look.

Also, practice on a scrap piece of drywall or cardboard first to get the hang of the application and adjust the pressure if you’re using a sprayer. It can take a bit of trial and error, but once you find the sweet spot, it’s pretty straightforward.

[Downaski]

Thanks. One last thing, how tricky is it to clean the sprayer afterward? I’ve heard it can be a bit of a hassle.

[FatimaandAhmed]

The key is not letting the texture material dry inside the sprayer, as that can make cleanup much harder. Start by disassembling the sprayer. Remove the nozzle, spray tip, and any other detachable parts. Rinse everything thoroughly with warm water since most texture materials are water-based and should wash off easily. Use a small brush, like an old toothbrush, to scrub away any stubborn spots, especially in tight areas like the nozzle. It’s also important to flush the sprayer by running clean water through it to clear out the hose and pump. If your sprayer has specific instructions in the manual, it’s always a good idea to follow those for the best results.

[Downaski]

Thanks for the detailed explanation!