How to Hang Wallpaper: Step-by-Step Guide for Beginners

Hanging wallpaper is one of the most impactful DIY projects a homeowner can tackle — and one of the most misunderstood. Done right, it transforms a room. Done wrong, it bubbles, peels, and gaps at the seams within months. The difference is almost entirely in the preparation and technique, not the wallpaper itself.

This guide walks through every step: prepping the walls, calculating how much paper you need, cutting and pasting, hanging the first strip, and finishing corners and edges. No shortcuts — just the method that actually works.

What You'll Need

Before starting, gather all tools. Stopping mid-project to find a missing item is how mistakes happen.

Tool	What It's For
Measuring tape	Room dimensions and strip lengths
Level or plumb bob	Drawing a vertical reference line
Pencil	Marking cuts and reference lines
Sharp utility knife or scissors	Cutting strips to length
Pasting table	Applying adhesive to paper-backed wallpaper
Paste brush or roller	Applying adhesive evenly
Smoothing brush or plastic smoother	Pressing paper flat against the wall
Seam roller	Pressing seams flat
Sponge and bucket of clean water	Wiping paste off the surface
Stepladder	Reaching ceiling and top of walls

For paste-the-wall wallpaper, you'll also need a paint roller and tray to apply adhesive directly to the wall. For traditional paste-the-paper, you'll need wallpaper adhesive mixed to the manufacturer's specification.

Step 1: Prep the Walls

Wall preparation is where most DIY wallpaper jobs succeed or fail. Wallpaper sticks to the wall, not to existing paint problems. Any imperfection — a crack, a patch, a rough texture — will show through the paper and may prevent it from adhering properly.

Fill any holes or cracks with spackle and sand smooth once dry. If the existing paint is peeling or flaking, scrape it off before proceeding. Remove any old wallpaper completely — never hang new paper over existing paper. The moisture from the new adhesive will reactivate the old paste and cause both layers to fail.

Once the walls are smooth and clean, apply a coat of wallpaper primer. This is the most important prep step that DIYers skip. Primer seals the surface, prevents the drywall from absorbing too much paste, and allows the paper to slide slightly for positioning before it sets. On new drywall especially, skipping primer means the paper bonds directly to the drywall facing — making future removal destructive. Let primer dry completely before hanging.

Step 2: Calculate How Much Wallpaper You Need

Measure the room's perimeter (length + width × 2) and multiply by ceiling height to get total wall area. Subtract roughly 21 sq ft for each door and 15 sq ft for each window. Divide by the usable coverage of your wallpaper roll, then add extra for pattern repeat waste.

A standard US double roll (20.5" wide × 27 ft long) has about 46 gross square feet. After pattern waste, usable coverage is typically 30–40 sq ft depending on repeat size. For a 12×12 room with 8-ft ceilings, one door, and two windows, expect to need 10–14 rolls depending on the pattern. Use our wallpaper calculator to get a precise count based on your room dimensions and pattern repeat.

Always buy at least one extra roll from the same dye lot. Color can vary between production batches, and running short mid-project with no matching rolls available is a common — and expensive — mistake.

Step 3: Find Your Starting Point

Never start wallpapering from a corner. Corners are rarely perfectly square, and starting there will cause every subsequent strip to drift out of plumb. Instead, measure one roll-width away from your most prominent corner and draw a perfectly vertical plumb line using a level.

This plumb line is your guide for the first strip. Every strip after that aligns to the previous one — but if the first strip isn't plumb, every strip compounds the error. The last strip in the room will meet in a corner, where any mismatch is hidden when the door is open or furniture is in place. Plan which corner will be your "finishing" corner before you start.

Step 4: Cut and Prepare Your Strips

Measure ceiling to floor and add 4 inches — 2 inches extra at top and bottom for trimming. Cut several strips to this length before hanging. If your wallpaper has a pattern repeat, align each strip to the previous one before cutting so the pattern matches at ceiling height.

For paste-the-paper wallpaper: lay the strip face-down on the pasting table, apply adhesive evenly from the center outward, then fold the strip loosely (pasted sides together, called "booking") and let it soak for the time specified on the label — typically 3–5 minutes. Don't skip soaking; it allows the paper to expand before hanging so it doesn't expand on the wall and cause bubbles.

For paste-the-wall wallpaper: apply adhesive directly to the wall section you're about to cover and hang the dry strip immediately. This method is faster and more forgiving for beginners.

Step 5: Hang the First Strip

Unfold the top portion of the booked strip and position it against your plumb line, leaving 2 inches overlapping onto the ceiling. Press the paper lightly against the wall with your hands, working from the plumb line outward to prevent air trapping. Don't press firmly yet — you need to be able to reposition.

Once the strip is positioned correctly, smooth it from top to bottom with a smoothing brush or plastic smoother, working outward from the center to push any air bubbles toward the edges. Work quickly but don't rush — paste-the-paper adhesive gives you a few minutes of working time before it grabs.

Use a sharp utility knife and straight edge to trim the excess at the ceiling and baseboard. Cut against a flexible joint knife pressed into the wall-ceiling joint for a clean line. Wipe any adhesive off the surface immediately with a damp sponge — dried paste is much harder to remove.

Step 6: Hang Subsequent Strips

Butt the edge of the second strip directly against the first — no overlap, no gap. On patterned wallpaper, slide the strip up or down until the pattern aligns before pressing into place. The seams should be nearly invisible when done correctly.

Run a seam roller lightly along each joint after hanging to ensure the edges are fully adhered. Don't use a seam roller on embossed or textured wallpaper — it will flatten the texture.

Every few strips, check that your edges are still plumb with a level. Paper can drift slightly, especially around outlets and switches. Catching drift early is much easier than correcting it after several strips.

Step 7: Handling Corners, Outlets, and Obstacles

Inside corners: measure the distance from the last full strip to the corner, add half an inch, and cut a strip to that width. Hang it into the corner, pressing the half-inch overlap onto the adjacent wall. Draw a new plumb line on the new wall and use it to align the next strip, overlapping the turned edge by about half an inch.

Outside corners: wrap the strip around the corner with a small overlap (about an inch). Outside corners take more abuse than inside corners, so a double layer here provides durability.

Electrical outlets and light switches: turn off power at the breaker before hanging near outlets. Hang the strip over the outlet, then cut an X through the paper over the box using a utility knife. Trim the flaps close to the box edges and press the paper flat. Replace the cover plate over the wallpaper edge.

How Long Does It Take to Wallpaper a Room?

Room Size	First-timer	Some experience
Accent wall (one wall)	3–4 hours	1–2 hours
Small room (10×10)	1.5–2 days	4–6 hours
Average bedroom (12×12)	2–3 days	6–8 hours
Large room (16×20)	3–4 days	8–12 hours

Time estimates include prep, hanging, and cleanup. First-timers should budget generously — rushing leads to misaligned patterns and poorly adhered seams that become obvious once the paste dries.

Common Mistakes to Avoid

Skipping wall primer. The single most common cause of wallpaper failure. Always prime before hanging, especially on new drywall or previously painted walls.

Not checking plumb. Starting against an out-of-square corner or not using a level will cause every strip to drift. Always establish a plumb line first.

Under-soaking paste-the-paper wallpaper. If the paper doesn't soak long enough, it will expand on the wall and create bubbles that don't go away after drying.

Buying from different dye lots. Always buy all rolls in one order and verify the same batch number. Even slight color variation between lots becomes obvious on a finished wall.

Hanging over existing wallpaper. The moisture from new adhesive reactivates old paste. Both layers will eventually fail. Remove all existing paper first.