Getting your walls wallpapered is a significant investment that can transform a room—but only if you hire someone who knows what they're doing. A botched installation means bubbles, peeling edges, and visible seams that'll drive you crazy for years. Before you call anyone, use this checklist to ensure you're actually ready and you know what to ask potential installers.
Assess Your Walls First
Your walls need to be in good condition before any professional touches them. Walk around the room and check for cracks, water damage, peeling paint, or uneven surfaces. If your walls have existing wallpaper, you need to decide whether removal is happening first—and that's a separate job that typically costs $1–3 per square foot, depending on how stubborn the old adhesive is.
Run your hand along the walls to feel for bumps or dips. Even small imperfections will telegraph through new wallpaper, especially with patterns or metallic finishes. If walls are rough or heavily textured, professional wall prep (sanding, skim coating, primer) might run $0.50–$1.50 per square foot but is essential for a clean result.
Choose Your Wallpaper Strategically
Not all wallpaper is created equal, and some types require specialist installation skills. Standard paper-backed vinyl is forgiving and widely available at $15–$40 per roll. Grasscloth, silk, and natural fiber wallpapers ($30–$80+ per roll) are beautiful but demand extra care during installation to avoid staining or damage. Flocked or embossed finishes need experienced hands to avoid crushing the texture.
Calculate your square footage accurately. Most rolls cover 25–30 square feet and have pattern repeats of 0–25 inches. Complex repeats mean more waste, so buy 10–15% extra and confirm the dye lot number matches across all rolls. Bring samples to your installer's workspace so they can see exactly what they're working with.
Know the Installation Process
Professional wallpaper installation typically takes 1–3 days for an average bedroom, depending on room size, wall complexity, and pattern difficulty. Installers charge either by the hour ($40–$75) or by the square foot ($1.50–$4 per sq ft), with larger jobs usually negotiating better rates.
The process includes wall prep, measuring and cutting, mixing and applying adhesive, hanging strips, smoothing out air bubbles, and trimming edges. Quality installers use booking tables, laser levels, and specialized smoothing tools. They'll protect your floors and furniture, handle corners and outlet covers carefully, and typically let the adhesive cure for 24–48 hours before you touch anything.
Create Your Pre-Hire Checklist
Before calling installers, verify:
- Walls are clean, dry, and free of mold (test with moisture meter if unsure—reading should be under 12%)
- You've chosen your wallpaper and have all rolls in hand with matching dye lots
- You know your total square footage and ceiling height
- You've decided on existing wallpaper removal or if you're keeping it
- You have photos of any problem areas (water stains, cracks, uneven surfaces)
- You understand the payment schedule (deposit, milestone, final payment)
- You've checked the installer's references and warranty (reputable pros guarantee seams for 5–10 years)
Request Detailed Quotes
Get at least three quotes. A vague estimate is a red flag. Legitimate installers will ask about wall condition, provide a written breakdown of wall prep costs separately from installation, and confirm your wallpaper choice. They should also mention prep work needed and provide a timeline in writing.
Ask whether the quote includes removal of existing wallpaper, patching, primer, and cleanup. Some installers bundle these; others charge separately. Clarify what happens if wallpaper arrives damaged or if pattern alignment reveals manufacturing issues.
Final Quality Checkpoints
Before paying the balance, inspect seams in natural light to confirm they're invisible or barely visible (invisible seams are the gold standard). Check corners, around outlets, and along trim for crisp, clean edges. There should be no bubbles, wrinkles, or adhesive smudges on the finished surface.
Platforms like Mercoly let you compare and find trusted wallpaper installation providers in your area, complete with reviews and credentials, so you're not calling blindly.
Frequently Asked Questions
Q: Do I need to remove old wallpaper before hanging new wallpaper? It depends on condition—intact, well-adhered old wallpaper can sometimes serve as a base, but most professional installers recommend removal to avoid future peeling and ensure a smooth, even surface.
Q: How long does wallpaper adhesive take to dry, and when can I wash the walls? Most installers recommend waiting 4–6 weeks before exposing walls to moisture, humidity, or washing, even though the adhesive feels dry after 24–48 hours.
Q: Can wallpaper be installed over textured or popcorn walls? Textured walls can be wallpapered but require additional prep work (smoothing or skim coating), which increases cost; most installers charge $0.50–$1.50 per square foot extra for this.
Ready to hire? Find and compare trusted wallpaper installation professionals using Mercoly today.