Removing old wallpaper from plaster walls can seem like a daunting task, but with the right tools and techniques, it can be done efficiently and effectively.
Whether you’re preparing for a fresh coat of paint or new wallpaper, following a proper process will help preserve the integrity of your plaster walls and ensure the best results. This guide will take you through the steps of how to remove old wallpaper from plaster walls.
Why Removing Old Wallpaper is Important
Removing old wallpaper is a crucial step in ensuring any new wall treatment adheres properly and looks its best. Over time, old wallpaper can become worn, stained, or start to peel, which makes it unsuitable as a base for painting or applying new wallpaper.
Additionally, leaving old wallpaper on the walls can trap moisture and lead to mold growth, potentially damaging the plaster underneath. By removing the old wallpaper, you create a smooth, clean surface that allows for better results and ensures the longevity of your new wall covering or paint.
Taking the time to remove it properly also protects the structural integrity of your plaster walls, preventing unnecessary repairs in the future.
Tools and Materials You’ll Need
To efficiently remove old wallpaper and prepare your walls for the next step, gather the following tools and materials:
- Wallpaper scraper or putty knife – For loosening and scraping off the wallpaper.
- Scoring tool – To perforate the wallpaper and allow the remover solution to penetrate.
- Wallpaper remover solution or fabric softener – Helps dissolve the adhesive for easier removal.
- Spray bottle or sponge – For applying the remover solution evenly across the wallpaper.
- Plastic sheet or drop cloth – To protect your floors and furniture from debris and moisture.
- Bucket of warm water – For rinsing and cleaning the walls after wallpaper removal.
- Sponge or cloth – To wipe down the walls and ensure a clean surface.
- Step ladder – To access higher areas of the wall.
- Protective gloves – To shield your hands from chemicals or sharp tools.
- Garbage bags – For disposing of the removed wallpaper.
Having these tools and materials ready will help make the wallpaper removal process smoother and more efficient.
Safety Precautions
When removing wallpaper, it is important to prioritize safety to prevent injuries or damage. Here are some key safety precautions to follow:
- Work in a well-ventilated area – If using a wallpaper remover solution or steam, ensure proper ventilation to avoid inhaling strong fumes or excessive moisture.
- Use protective gloves – Wear gloves to protect your hands from potential skin irritation caused by chemicals or sharp tools.
- Be cautious on ladders – Always ensure the step ladder is stable and positioned on even ground. Avoid reaching too far to prevent falling.
- Avoid electrical hazards – Turn off power to outlets and switches located on the walls you are working on. Cover them securely to protect them from water or steam.
- Keep tools organized – Place all tools and materials in a safe location to avoid tripping hazards.
By adhering to these safety measures, you can ensure a safe and efficient wallpaper removal process.
10 Methods How to Remove Old Wallpaper from Plaster Walls
1. Prepare the Room and Protect Surfaces
Before starting the wallpaper removal process, it is essential to prepare the room carefully. Remove furniture, cover the floor with drop cloths or plastic sheeting, and tape protective coverings over baseboards and electrical outlets.
This prevents water, steam, or adhesive residue from damaging floors or furnishings. Wear protective gloves and safety glasses to shield your skin and eyes from chemicals or hot water. Proper preparation ensures a safe and efficient workspace and minimizes cleanup after the job is complete.
2. Score the Wallpaper Surface
Scoring the wallpaper helps liquids or steam penetrate the adhesive, making removal easier. Use a wallpaper scoring tool with small perforating blades to create tiny holes across the surface. Be cautious not to press too hard, as excessive force can damage the plaster beneath. Scoring is particularly useful for thick or vinyl-coated wallpaper, as it allows the removal solution to reach the glue effectively and reduces the effort required to strip the paper from the wall.
3. Apply Wallpaper Removal Solution
Commercial wallpaper removal solutions are formulated to dissolve adhesive without harming plaster. Mix the solution according to the manufacturer’s instructions and apply it generously to the wallpaper using a sponge, spray bottle, or paint roller. Allow the solution to soak for 10–20 minutes, giving it time to penetrate the adhesive thoroughly. For stubborn wallpaper, multiple applications may be necessary. Using the correct solution softens the adhesive and makes the removal process more efficient and less likely to damage the plaster.
4. Use Warm Water and Soap for Soaking
If a commercial solution is unavailable, a mixture of warm water and mild dish soap can be effective. Saturate the wallpaper with the solution using a sponge or spray bottle and allow it to sit for several minutes. The warm water loosens the adhesive, while the soap reduces the stickiness, making the paper easier to peel away. This method is gentle on plaster walls, reducing the risk of chipping or cracking during the removal process.
5. Steam the Wallpaper for Tough Adhesive
For older or stubborn wallpaper, using a wallpaper steamer is highly effective. Fill the steamer with water and allow it to heat to produce continuous steam. Press the steam plate gently against the wallpaper, holding it in place for 15–30 seconds to soften the adhesive.
Steam penetrates thick layers of paper and glue, allowing the wallpaper to lift more easily from plaster without scraping or harsh chemicals. This method is particularly valuable for delicate plaster surfaces that could be damaged by excessive scraping.
6. Gently Scrape with a Putty Knife
Once the adhesive is softened, use a wide putty knife or scraper to lift the wallpaper from the plaster wall. Start at a corner or seam and work slowly, sliding the blade under the paper at a low angle to minimize the risk of gouging the plaster.
Remove large sheets whenever possible, rather than small fragments, to reduce the risk of damage. Patience is key during this step, as rushing or applying too much force can create pits or scratches in the plaster surface.
7. Remove Residual Adhesive
After the wallpaper is removed, adhesive residue often remains on the plaster walls. Apply a mixture of warm water and mild detergent, or a wallpaper adhesive remover, to soften the residue. Use a sponge or soft cloth to wipe away the sticky substance gently. Avoid abrasive scrubbing, which can damage the plaster finish. Removing adhesive thoroughly ensures that the walls are smooth, clean, and ready for painting, priming, or new wallpaper.
8. Repair Minor Plaster Damage
Old wallpaper removal can sometimes reveal small cracks, holes, or chipped plaster. Fill minor imperfections with a lightweight spackling compound or plaster repair product. Apply the compound smoothly with a putty knife, feathering the edges to blend with the surrounding surface. Allow it to dry completely before sanding lightly to achieve a uniform finish. Repairing these areas ensures that the walls are ready for finishing and prevents flaws from showing through new paint or wallpaper.
9. Sand the Surface for Smoothness
Once the adhesive and repairs are complete, lightly sand the plaster walls to achieve a smooth, even surface. Use fine-grit sandpaper and a sanding block or pole sander to remove any rough spots or leftover adhesive. Be careful not to oversand, which could thin or damage the plaster. Sanding prepares the surface for painting or new wallpaper and ensures a professional-looking finish, creating a clean and consistent base for subsequent wall treatments.
10. Prime and Prepare for New Finish
After the walls are clean, repaired, and smooth, apply a coat of primer specifically formulated for plaster or previously wallpapered surfaces. Primer seals the wall, prevents adhesive residue from affecting new finishes, and improves paint or wallpaper adhesion. Once the primer is dry, the walls are ready for your chosen finish, whether it’s new wallpaper, paint, or a textured coating. Proper priming ensures a long-lasting, visually appealing result and enhances the durability of the new wall surface.
Maintenance and Upkeep
To keep your newly finished walls looking their best, regular maintenance is key. For painted walls, dust them periodically with a soft, dry cloth or use a gentle vacuum attachment to remove dirt and debris. If stains or marks appear, use a mild soap solution and a sponge to clean the affected area, avoiding abrasive cleaners that could damage the finish.
For wallpapered surfaces, check for lifting seams or edges and secure them with wallpaper adhesive as soon as they are noticed to prevent further detachment. Additionally, be mindful of humidity levels, especially in kitchens or bathrooms, as excessive moisture can affect both paint and wallpaper over time. Regularly inspecting your walls for signs of wear will help preserve their appearance and extend their longevity.
Conclusion
Removing old wallpaper from plaster walls requires careful planning, patience, and a combination of methods to protect the underlying surface.
From preparing the room and scoring the wallpaper, to applying solutions or steam, gently scraping, removing residual adhesive, repairing plaster damage, and priming for a new finish, each step is crucial for achieving smooth, clean walls. Thanks for reading our blog post on how to remove old wallpaper from plaster walls! We hope you found it helpful and informative.