What are your best tips for effectively applying a thick skim coat to textured walls in my three different rooms as a beginner in DIY projects?
Asked by Alexander Anderson 
3 months ago
Last Updated: October 2, 2024
Hey there! I’m looking for some advice on how to properly apply skim coating to textured walls. I have three rooms in my house that need it. I’m a beginner when it comes to DIY projects. Any tips or tricks would be greatly appreciated. Thanks in advance for your help!
More details needed! If you’re dealing with Lath & plaster, it’s one scenario; if it’s on WB, then consider renting a stipple grinder and avoid applying any skim coats. Vibrations can cause cracks in L&P walls.
It all comes down to the type of texture you’re aiming for.
Are you looking to achieve smooth walls? From my experience, applying a thick layer of skim coat never turns out well. It’s better to apply several thin coats, even though it takes more time, for superior results.
I would suggest sanding the walls first if they feel prickly like that. A random orbit sander with 60 grit sandpaper works really quickly. If I had a large area to work on, I’d thin the mud, roll it on, and use a skim board. For a smaller space like a bathroom, I’d just thin it out slightly and skim with a 12″ trowel. It’s important to use a sander that has a vacuum attachment. I ended up doing my entire house, so I invested in a powered 10″ drywall sander.
Avoid applying a thick layer of mud as it may dry with cracks, leading to endless sanding. Use slightly thin mud and the largest taping knife available. If possible, use a Darby for an even better outcome.
Practice your technique using joint compound.