Painting Over Wallpaper vs. Removing It - What Painters Recommend

One of the most common questions I get from homeowners in Easton, Bethlehem, and across the Lehigh Valley is whether they should paint over existing wallpaper or invest in having it removed first. It is a fair question - wallpaper removal can be a significant cost and a messy process. But after 15 years of dealing with both approaches on hundreds of homes, my answer is almost always the same: remove it.

That said, the situation is rarely completely black and white. There are specific circumstances where painting over wallpaper is an acceptable short-term solution. In this article, I will walk you through both options honestly - the risks, the process, the costs, and how older Lehigh Valley homes with plaster walls change the equation entirely.

Why Most Professionals Recommend Removal

The core issue with painting over wallpaper is simple: paint needs a stable, uniform substrate to bond to properly. Wallpaper - especially older vinyl or fabric-backed paper - is not that. Here is what typically goes wrong when you paint over it:

Seams Become Visible

Wallpaper is installed in vertical strips, and those seams can be almost invisible when the paper is intact. The moment you apply water-based paint or primer over the top, moisture causes the paper edges to lift slightly, swell, or curl. Under a fresh coat of paint, every seam becomes a visible ridge. No amount of additional coats will hide this - in fact, more paint often makes it worse.

Bubbling and Blistering

Paint traps moisture from the application against the paper. This moisture has nowhere to go except back through the paper - and it takes the adhesive with it. You will often see bubbles form within hours of painting over wallpaper. They may deflate as things dry, or they may become permanent blisters in the wall finish.

Peeling - Sooner or Later

Even if painting over wallpaper looks acceptable initially, the bond is compromised. Humidity changes, temperature swings (very common in Pennsylvania's four-season climate), and the natural movement of old homes all work against the adhesion. Within a year or two, the painted-over wallpaper typically begins to peel - and now you have to remove both the old paper and the paint on top of it, which is significantly more labor-intensive than removing the paper alone.

Texture Telegraphing

Even smooth wallpapers have a texture that is subtly different from a painted wall. Embossed or heavily textured wallpapers make this obvious immediately. After painting, the pattern or texture shows through the paint in raking light - what painters call "telegraphing." If you are trying to achieve a smooth, modern finish, painting over textured wallpaper will not get you there.

When Painting Over Wallpaper is Acceptable

I said "almost always remove it" - here are the exceptions where painting over may be a reasonable option:

The Paper is Fully Adhered with No Loose Sections

If the wallpaper is older, very well adhered, and has no bubbles, tears, or lifted edges anywhere on the wall, painting over it carries lower risk. Test every seam and corner by pressing firmly - if nothing moves, the adhesive bond is still strong.

Removal Would Damage the Wall Beyond Repair

This is the most legitimate reason to paint over wallpaper, and it is particularly relevant in older Lehigh Valley homes. In many historic row homes in Easton's West Ward or twin homes in south Bethlehem, wallpaper was applied directly to plaster walls - sometimes over bare, unprimed plaster. Removing that paper tears the plaster face and leaves a rough, crumbling surface that requires skim coating or full wall replacement to fix. In those cases, the cost of repair can exceed the cost of the paint job itself.

You Are Selling the House in the Short Term

If your primary goal is to freshen up a home before listing it and budget is tight, painting over well-adhered wallpaper with a good bonding primer is a practical short-term fix. A future owner will eventually have to deal with it properly, but for a quick sale prep, it can be acceptable.

How to Paint Over Wallpaper Correctly (If You Must)

If you do decide to paint over, do not skip these steps:

1. Re-glue any loose seams or edges with seam repair glue. Allow to fully dry.
2. Apply a coat of oil-based bonding primer or shellac-based primer. Water-based primer will cause the paper to swell and bubble. This step is non-negotiable.
3. Let the primer dry completely - typically 24 hours for oil-based.
4. Sand any raised seams lightly with 120-grit sandpaper.
5. Apply two coats of quality latex paint. Do not use a heavy-nap roller that deposits too much moisture at once.

How to Properly Remove Wallpaper - Including in Older Homes

Wallpaper removal is a labor-intensive job, but it produces the right result. Here is the professional process I use on Lehigh Valley homes:

Step 1 - Identify Your Wall Type

This step matters enormously. Drywall (common in homes built after about 1960) and plaster (typical in pre-1960 homes) require different approaches. Drywall is more vulnerable to water damage during removal. Plaster is harder to damage but can crack if removal tools are used too aggressively.

In Easton's historic districts, the West Ward, and older sections of Bethlehem and Allentown, the majority of homes have plaster walls. If you are uncertain, tap the wall lightly - plaster sounds harder and more solid than hollow drywall.

Step 2 - Remove the Top Layer First

Most wallpaper has two layers: a decorative face layer and a backing layer. Often you can dry-strip the face layer first by peeling from a seam. Start at a corner or switch plate and pull at a low angle, close to the wall. This preserves the backing and reduces moisture exposure to the wall.

Step 3 - Score the Backing

Use a scoring tool like the Paper Tiger or a scored sponge to create small perforations in the remaining backing layer. This allows your removal solution to penetrate. On plaster walls, score very lightly - you only need small holes, not aggressive gouges.

Step 4 - Apply Removal Solution

Commercial wallpaper removal solutions (DIF is a common brand) work well when mixed with warm water per the label. A DIY alternative is fabric softener mixed with hot water (1 cap per quart). Apply with a sponge, sprayer, or roller and allow it to soak for 10 to 15 minutes. Do not oversaturate - especially on plaster. Work in small sections of about 4 to 6 square feet at a time.

Step 5 - Scrape Carefully

Use a wide plastic scraper (6 to 8 inches) rather than a metal one, especially on plaster. Metal scrapers can gouge plaster and drywall alike. Keep the blade nearly flat against the wall surface and push under the paper rather than prying up from the surface.

Step 6 - Clean and Neutralize the Wall

After all paper is removed, wash the wall with a TSP substitute (trisodium phosphate alternative) mixed in warm water to remove all adhesive residue. Any glue left on the wall will show through paint as shiny spots. Rinse with clean water and allow to dry completely - typically 24 to 48 hours.

Step 7 - Prime Before Painting

Always prime freshly stripped walls before painting. An oil-based primer is ideal for plaster walls that may have absorbed moisture during removal. This seals the surface, prevents flash spots, and gives the topcoat a uniform foundation to bond to.

Cost Comparison - Removal vs. Painting Over

Here is a realistic breakdown for a typical 12x14 bedroom in the Lehigh Valley:

Painting over wallpaper (well-adhered, single layer):

• Seam repair and bonding primer: $40 to $80 in materials
• Additional labor for prep and priming: $100 to $200
• Standard paint job labor and materials: $400 to $700
• Total: $540 to $980 - with the caveat that it may need redoing within a few years

Removing wallpaper and painting:

• Wallpaper removal labor: $200 to $500 depending on number of layers and wall type
• Wall repair and priming: $150 to $300
• Standard paint job labor and materials: $400 to $700
• Total: $750 to $1,500 - but the result is permanent and professional

The gap in cost is real, but so is the difference in outcome. Most homeowners who choose the cheaper option end up spending more in the medium term when the painted-over paper fails.

FAQ - Painting Over vs. Removing Wallpaper

Can you paint directly over wallpaper?

Technically yes, but most professional painters strongly advise against it. Painting over wallpaper risks bubbling, seam visibility, peeling, and moisture damage. Removal is almost always the better long-term investment.

How do you remove wallpaper from plaster walls without damaging them?

Plaster walls require a careful approach. Score lightly, apply a commercial wallpaper removal solution or fabric softener mixed with water, let it soak for 10 to 15 minutes, then remove in sections using a wide plastic scraper. Avoid metal scrapers on plaster. Work slowly and never oversaturate, as plaster can absorb too much moisture and crack.

Is it cheaper to paint over wallpaper or remove it?

Painting over wallpaper is cheaper upfront - you skip the removal labor cost. However, if the wallpaper eventually fails, you face a more expensive repair job down the road. Removal costs more initially but produces a permanent, professional-quality result.

How much does wallpaper removal cost in the Lehigh Valley?

Wallpaper removal in the Lehigh Valley typically runs $1.00 to $3.00 per square foot depending on the number of layers, wall type, and how well the paper releases. A single bedroom might cost $200 to $500 for removal alone before any painting begins.

How many layers of wallpaper can be painted over?

One layer may be marginally acceptable under the right conditions. Two or more layers of wallpaper should never be painted over. Each additional layer multiplies the risk of failure and adds weight that puts stress on the adhesive bonds.