The larger patches show through because of differences in the texture of the surrounding wall, which has had several coats of paint applied over the years. So you have roller texture and smooth drywall patches.
Home is Settling. After a home is constructed, the house itself settles into its final shape, and this process usually takes a few years. During this process, the house will shift, and drywall cracks will start becoming more apparent.
Most probably, the pva adhesive has been mixed with a lot of water before it has been given to the wall surface, another factor that produces the splitting of the portion is the thickness. Normal plaster must have a thickness of at least 4 mm, when the thickness is thinner it can easily detach.
It is important to use primer on the spackle spot prior to painting the wall. This can help to prevent the finished product from appearing much duller than its surrounding area.
Lighting and Shadows: Sometimes, lighting can create shadows that make the outline of the studs more visible, especially if the drywall surface is not flat. Lack of Paint or Texture: Unfinished drywall or a lack of paint can also make the studs more visible, as the texture and color of the drywall help to obscure them.
The larger patches show through because of differences in the texture of the surrounding wall, which has had several coats of paint applied over the years. So you have roller texture and smooth drywall patches.
Make sure that all filled areas are rubbed down smooth and level. You will need to prime the filler before painting to prevent subsequent coats being absorbed more rapidly than on other areas.
To hide imperfections, such as cracks and dents, the Zinsser Bulls Eye 1-2-3 Plus Interior/Exterior Water-Based Primer works well. To promote adhesion and durability on surfaces, such as metal or tile, the Rust-Oleum Zinsser Bulls Eye 1-2-3 Plus Primer is an excellent choice.
He notes that a low- or no-sheen flat topcoat will better hide drywall patch marks, though this may not be an option in every situation. If a wall has multiple drywall patches, Fiorilli recommends priming the entire wall and repainting it to ensure an even finish and make the touch-up work invisible.
Patchy paint can result if paint has been applied unevenly. Patchy paint can be down to a variation in surface absorption. Walls might appear patchy if they have variation in texture. Using paint that is not fully mixed can cause a patchy appearance.
Paint flashing is a shiny spot on your wall that doesn't match the rest of the surface. When light reflects off this spot, you will see a shimmery effect where the color doesn't blend.
Without the mist coat you're likely to have very poor adhesion between your paint and your plaster and quite often it will crack, flake or even peel off in sheets in some instances!
To repair with additional mud, scrape out drywall compound with a putty knife, apply to nail holes or dips, and smooth off excess before applying touch-up paint. To repair with sanding only, remove the excess compound from bulges and finish with touch-up paint.
The application of drywall mud over paint requires precision and patience. Starting with a thin first coat, the mud should be spread evenly across the surface using a trowel, ensuring all imperfections are filled and the surface is uniform.
Professional painters then recommend two coats of primer for any surfaces where you have repaired imperfections, are painting over darker colors, or for painting any surfaces with stains, perhaps painting over watermarks, to help block moisture and prevent the stain from bleeding through.
Leveling Up with Skim Coating
Skim coating is a technique used to create a smooth, even surface by applying a thin layer of joint compound over the entire wall. This process can effectively hide minor flaws and create a uniform appearance. This can effectively hide imperfections and create a seamless appearance.
Formulated with a thicker high hiding formula, KILZ 3 Premium Primer hides surface imperfections, prepares the surface better for painting and hides previous dark colors with ease.
Painting a transparent color on top of a lighter layer can really help it pop. Additionally, you can paint over the transparent color a few times to increase the opacity even if it's on a darker background.
Most wall fillers dry white, so you can paint over it with either a primer or sealer if there is a stark contrast to the rest of the wall when fully dried. Or paint your colour directly over it.
Unfortunately, there are many things that cause ghosting, and you cannot simply paint over the problem and hope it goes away. Your ceiling or walls will need to be cleaned thoroughly and the issues will need to be resolved, so that the dirty streaks do not reoccur.
More than likely what you are seeing is damage from moisture. This usually happens when either the insulation is packed too tight behind the Sheetrock or there is no moisture barrier installed between the drywall and the outside exterior wall.
Ghosting is when a person ceases all contact and communication with another person without any explanation, warning or apparent reason. They stop replying to messages and phone calls, cease contact on social media and avoid any attempts by the other person to reach out or reconnect.