Ethan Clarke
Painting over plastic wallpaper is a fast and cost-effective way to transform a room. It is generally recommended to remove wallpaper before painting a wall, but there are exceptions to this rule. For instance, if removing the wallpaper will damage the wall or be too costly, painting over it is a good option. It is important to note that the wallpaper must be in good condition, cleaned, repaired, and primed with multiple coats before painting. The paint will probably help seal the seams, but using a thin and transparent caulk line to seal the seams beforehand is recommended. While it is not mandatory to use a primer when painting over wallpaper, it is strongly recommended, especially if you want to paint a dark-coloured wallpaper with a lighter colour.
How to paint over plastic wallpaper
| Characteristics | Values |
|---|---|
| When to paint over wallpaper | If removing the wallpaper will damage the wall, is cost-prohibitive, or if the wallpaper is in good condition |
| Wallpaper condition | Not peeling, scratched, ripped, or excessively dirty |
| Wallpaper type | Not fabric-backed vinyl, textured, or coated peel-and-stick |
| Prep work | Clear the room of furniture, cover the floor, remove light switch and outlet faceplates, and use painter's tape to mask off trim, baseboards, or outlets that you don't want to paint |
| Cleaning | Use a degreaser or sugar soap, gently wiping with a sponge, then wipe down with a clean rag soaked in cold water |
| Repairing | Fill small holes with surfacing or spackling compound, then sand the surface lightly to achieve a smooth finish |
| Priming | Use a high-quality primer to improve paint adhesion and provide a smooth surface for painting |
| Painting | Use a paint roller, emulsion paint, and caution to avoid paint spills |
| Seam sealing | Apply a thin coat of drywall joint compound over each wallpaper seam with a putty knife, then smooth with a taping knife |
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What You'll Learn
When to paint over plastic wallpaper
Painting over plastic wallpaper is a fast and cost-effective way to transform a room. However, there are a few things to consider before starting this project.
Firstly, it is important to examine the condition of the wallpaper. If the wallpaper is in good condition, smooth, and free of any chips, holes, scratches, or peeling, it can be painted over. If the wallpaper is damaged, it is better to remove it to achieve a flawless finish.
Secondly, the type of wallpaper is a crucial factor. Avoid painting over fabric-backed vinyl, textured wallpapers, and coated peel-and-stick wallpapers. Painting these types of wallpaper can cause more harm than good and make it difficult to remove the wallpaper later without damaging the walls.
Additionally, the adhesion and absorbency of the wallpaper should be considered. The wallpaper must be clean, dry, and free of dirt, dust, grease, or mould to ensure proper paint adhesion. A primer can be applied to improve adhesion and provide a smooth surface, especially when painting over a bold pattern or dark-coloured wallpaper.
Lastly, it is important to protect the surrounding area before painting. Remove furniture and cover the floor and adjoining surfaces with drop cloths or plastic sheets to prevent paint spills and splatters.
By considering these factors and following the proper preparation and application techniques, you can successfully paint over plastic wallpaper to achieve the desired results.
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How to prepare plastic wallpaper for painting
Plastic wallpaper is a tricky surface to paint on due to its chemical composition and smooth surface, which do not promote good paint adhesion. However, with the right preparation, you can achieve a durable and professional-looking finish. Here is a step-by-step guide on how to prepare plastic wallpaper for painting:
Step 1: Clean the Surface
Start by thoroughly cleaning the plastic wallpaper to remove any dirt, grease, mildew, or algae that may be present. Use a scrub brush, and go over the surface first with a dry brush to remove any loose paint or debris. Then, use soapy water or a detergent to remove any remaining dirt or grime. If there is mildew or algae, you may need to use a stronger solution, such as a mixture of water and bleach, to scrub and remove it. Once you have finished cleaning, rinse the surface with water and let it dry completely.
Step 2: Sand the Surface
To help the paint adhere better to the plastic surface, it is important to roughen it up a bit. Use fine-grit sandpaper to lightly sand the wallpaper, creating a matte finish. This will give the paint something to stick to without leaving visible sanding marks. After sanding, use a damp cloth to wipe away any sanding dust, and allow the surface to dry.
Step 3: Prime the Surface
Priming is a crucial step in preparing plastic wallpaper for painting. It is recommended to use a plastic-specific primer or a high-adhesion latex stain-blocking primer to ensure the paint adheres well and to protect against peeling and cracking. Apply the primer in light, even coats, following the instructions on the product for proper application and drying times.
Step 4: Choose the Right Paint
Not all paints are suitable for plastic surfaces. Opt for spray paints specifically designed for plastic, as they contain special bonding agents that help the paint stick to smooth surfaces. Alternatively, if you prefer brush painting, use acrylic or enamel paint with a plastic primer. Avoid using multipurpose paint or latex paint, as they may not bond well and could lead to peeling.
Step 5: Prepare Your Work Area
Before you start painting, set up your work area in a well-ventilated space, preferably outdoors or in a shaded area to prevent the paint from drying too quickly. Place a tarp, plastic sheet, or large piece of cardboard on the ground to protect the surrounding area from paint spray. Ensure you are wearing the appropriate safety gear, such as gloves and a mask, and have all the necessary tools and materials readily available.
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What paint to use on plastic wallpaper
Painting plastic materials can be challenging due to their chemical composition and smooth surface, which hinder paint adhesion. However, with the right paint and preparation, you can successfully paint plastic wallpaper. Here are some key considerations and steps to guide you through the process:
Choosing the Right Paint
Select a paint that is specifically designed for use on plastic surfaces. Spray paints formulated for plastics are ideal, as they contain special bonding agents that help the paint adhere to smooth surfaces. If you prefer brush painting, opt for acrylic or enamel paint, ensuring you use a plastic primer as well. Avoid latex paints, as they don't bond well and may cause peeling or cracking.
Preparing the Surface
Before painting, it's crucial to properly prepare the plastic wallpaper surface. Start by removing any furniture, rugs, curtains, and light switch faceplates from the room. Cover the floor with drop cloths or plastic to protect it from paint drips. Next, examine the condition of the wallpaper. If there are large sections peeling away, excessive dirt, or mould spots, it's best to remove the wallpaper instead of painting over it. If you choose to paint over mould spots, use a 3:1 water and bleach solution to scrub the area, then rinse and let it dry. For general cleaning, use a degreaser, detergent, or sugar soap to gently wipe down the wallpaper, ensuring you don't use too much moisture, as it can damage the wallpaper.
Priming
Priming is an essential step in ensuring the paint adheres properly to the plastic wallpaper. Use a high-adhesion primer, such as an acrylic latex primer, and apply it with a high-quality brush. Allow the primer to dry thoroughly before proceeding to the next step.
Painting
When painting plastic wallpaper, it's best to apply multiple light coats of paint rather than one heavy coat. For interior plastics, use top-quality acrylic paint, and for outdoor plastics, choose a spray paint designed for plastics. Let each coat dry completely before applying the next one.
Additional Considerations
- If you live in an area with high sun exposure, opt for UV-resistant paints to prevent colour fading over time.
- To seal the seams of the wallpaper, use a thin and transparent caulk line at the edges of the walls, ceiling seam, and skirting board.
- Use decorator's tape to protect adjoining surfaces from paint drips or brush strokes.
- For a drastic colour change or to cover a bold print, consider using a primer to make the job easier.
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How to paint plastic wallpaper
Painting over plastic wallpaper is a cost-effective way to transform a room. However, it is important to consider a few factors before proceeding. Firstly, examine the condition of the wallpaper. If the wallpaper is peeling away in large sections, removing it is a better option than painting over it. Painting over wallpaper that is excessively dirty, or has large mould spots, is not advisable as the paint won't adhere properly and mould will show through the paint.
If the wallpaper is in good condition, the next step is to clean the wallpaper to remove any dirt, dust, or grease. Use a degreaser or sugar soap, gently wiping it over the wallpaper with a sponge. Soak a clean rag in cold water and squeeze out the excess before washing the cleaning product off the wall. Let it completely dry.
The next step is to repair any damage to the wallpaper. Fill any small holes with surfacing or spackling compound. For larger holes, cut the drywall joint tape one inch larger than the hole and secure it in place with a layer of joint compound, feathering the edges. Add a second or third coat if necessary to cover the tape. Smooth the joint compound with a taping knife and sand each area of the compound with a drywall sanding sponge, removing any high spots or edges. Wipe down the surface with a clean, lint-free cloth to remove any dust or debris.
Now, the wallpaper is ready for priming. Using a primer is not mandatory but it is strongly recommended, especially if you are painting a dark-coloured wallpaper with a lighter colour. Primer will also help to seal the seams of the wallpaper. Apply a thin coat of drywall joint compound over each wallpaper seam with a putty knife. If seams are still visible, repeat the process with a second coat. Once the primer has fully cured, run the joint tape down the entire length of all wallpaper seams. Cut off the ends of the joint tape at the ceiling and at the baseboards. Press it into place with a drywall knife.
Finally, the wallpaper is ready for painting. Use a medium-nap paint roller to apply the paint. You will likely need two coats, with plenty of drying time in between.
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How to finish painted plastic wallpaper
Painting over plastic wallpaper can be a fast and cost-effective way to transform a room. However, it is not as simple as painting a wall. The process requires some prep work for successful results.
Firstly, examine the condition of the wallpaper. If there are any chips, holes, scratches, or large sections peeling away, it is better to strip the wall instead of painting over it. The paint won't cover up these imperfections, and it may make it more difficult to remove the wallpaper in the future. If the wallpaper is excessively dirty or mouldy, the paint won't adhere properly, and the mould will show through. In this case, it is recommended to strip the wallpaper.
If the wallpaper is in good condition, the next step is to clean it. Use a degreaser or sugar soap, gently wiping it over the wallpaper with a sponge. Soak a clean rag in cold water, squeeze out the excess, and wash the cleaning product off the wall. Let it dry completely.
Next, use a thin and transparent caulk line to seal the seams. Apply this at the edges of the walls, around the ceiling seam, and along the skirting board. This will help prevent the seams from curling and peeling up when painted.
Now, you can begin to prepare the area for painting. Remove furniture, rugs, pictures, and curtains. Cover the floor with drop cloths or plastic. Remove light switch and outlet faceplates. Use decorator's tape to protect adjoining surfaces from paint.
Once your area is prepared, you can begin priming the wallpaper. Apply a thin coat of drywall joint compound over each wallpaper seam with a putty knife, smoothing it with a taping knife. Allow 24 hours to dry. If seams are still visible, apply a second coat. Repair any holes with surfacing compound or joint compound and drywall joint tape. Sand each area of joint compound with a drywall sanding sponge to ensure a smooth finish.
Finally, you are ready to paint. Use a medium- or fine-grit drywall sanding sponge to sand each area of joint compound smooth, removing any high spots or edges. Use a roller to apply a thin coat of paint, allowing it to dry thoroughly before proceeding. Apply multiple light coats, rather than one heavy coat, to avoid drips and ensure full coverage. Let each coat dry completely before applying the next.
For extra protection, you can apply a protective clear coat to mitigate colour fading and maintain vibrancy.
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Frequently asked questions
First, check that your wallpaper is suitable for painting. If it is textured, fabric-backed vinyl, or coated peel-and-stick, it is not suitable for painting. If your wallpaper is in good condition, with no large peeling sections, you can begin to prepare it for painting. Clear the room of furniture and cover the floor with drop cloths or plastic sheets to protect against paint spills. Remove light switch and outlet faceplates, and use painter's tape to mask off any trim, baseboards, or outlets that you don't want to paint. Next, clean the wallpaper with a degreaser or sugar soap, gently wiping it with a sponge. Allow it to completely dry.
Using a primer before painting will help the paint adhere and provide a smooth surface. Once the primer is dry, apply a thin coat of drywall joint compound over each wallpaper seam with a putty knife. Smooth the joint compound with a taping knife and allow it to dry. If seams are still visible, apply a second coat. Repair any holes with surfacing compound or joint compound and drywall joint tape. Sand each area with a drywall sanding sponge to remove any high spots or edges. Finally, you are ready to paint. Use a paint roller to apply the paint, and allow plenty of drying time between coats.
You can use regular wall paint to paint over plastic wallpaper. However, if the paint is not sticking well, the wallpaper surface may be too glossy. In this case, sand the wallpaper to a matte finish before painting. You can also use paints specifically intended for plastic, such as Krylon Fusion for Plastic or Rust-Oleum Specialty Plastic Primer Spray.
