How to Hang Wallpaper: Preparation, Paste Selection, Lining and Hanging Method

Quick Answer: Hanging UK wallpaper requires sound, level, dry plaster (or new plasterboard with sealed joints), a wallpaper paste matched to the paper type (cellulose for standard, heavy-duty for vinyl, ready-mixed paste for non-woven), and a hanging method appropriate to the paper. The two hanging methods are paste-the-paper (traditional; paste applied to back of paper, soak before hanging) and paste-the-wall (modern non-woven papers; paste applied to wall, dry paper hung directly). For new plaster, mist coat with diluted matt emulsion before wallpapering. For previously-papered or painted walls, lining paper at 800–1200 grade is the standard pre-paper. Patterned papers must be matched at the seam; horizontal and vertical pattern repeat dimensions are printed on every roll label.

Summary

Wallpaper has come back into fashion in UK interiors over the last decade — non-woven papers in particular, with their forgiving paste-the-wall method, have made wallpapering accessible to non-specialists. The traditional skills around pasting, soaking, edge-trimming and pattern-matching are still relevant but the time-pressure has reduced.

Where wallpaper jobs fail is in the preparation, not the hanging. Hung on a poor surface, even the most expensive paper will show every imperfection within weeks — bubbles where paste hasn't keyed, seams opening as the paper shrinks, pattern misalignment because the wall isn't plumb. Two days of preparation save a week of remedial work.

This article covers preparation, paste selection, lining and the hanging sequence. For specific contemporary techniques (feature walls, mural papers, photo-printed bespoke) see feature wall wallpaper techniques. For paste types and product selection, see wallpaper paste types. For lining paper grades and use, see lining paper before decorating.

Key Facts

• Standard roll size — 10.05m × 0.53m (5.3 m² per roll)
• Wider rolls — 10.05m × 0.68m for some non-woven; check label
• Coverage — typical bedroom (4×4×2.4m) needs 5–7 rolls; deduct for windows / doors
• Pattern repeat — straight match, drop match (offset half repeat), random match
• Allow 10% wastage — for pattern matching, cuts and trimming
• Paper types — standard wood-pulp, vinyl, non-woven, washable vinyl, foam vinyl, fabric, woodchip
• Paste types — cellulose powder (mixed with water), ready-mixed tub paste, heavy-duty for vinyl, fungicidal for kitchens/bathrooms
• Soaking time (paste-the-paper) — 2–8 minutes; check paper label
• Booking — folding the pasted paper onto itself for soaking (paste-side to paste-side)
• Drying time — 24–48 hours after hanging before final inspection
• Temperature for hanging — 10–25°C; below 10°C paste won't set properly; above 25°C accelerates drying, causing seam opening
• Humidity — moderate; very dry conditions accelerate drying; saturated rooms slow it
• Plumb verification — drop a plumb-line at each first piece; do not assume the corner is plumb
• Pattern repeat dimensions — printed on roll label: e.g. "53cm horizontal, 64cm vertical drop match"
• Lap vs butt joint — UK papers are butt-jointed (edges meet, no overlap); never overlap unless paper-specific instruction says so
• Trim allowance — 25–50mm at top and bottom for cutting in

Quick Reference Table

Detailed Guidance

Preparation — where the job is won or lost

For new plaster:

1. Allow plaster to fully dry — minimum 4 weeks for skim coat; longer if backing coats are thick
2. Mist coat — diluted matt emulsion (50% emulsion : 50% water) to seal the porous plaster
3. After mist coat dries (24 hours), rub down with fine sandpaper to knock back any nibs
4. Size the wall — diluted wallpaper paste (or proprietary size) painted over the whole surface. This evens out the porosity and slows the rate at which the wall absorbs paste from the paper

For previously-painted walls:

1. Wash with sugar soap to remove grease and dust
2. Sand any glossy areas to provide a key for paste
3. Fill any holes; sand flush when dry
4. Repaint patched areas with matt emulsion if patches are large
5. Size the wall

For previously-papered walls:

1. Strip old paper completely (steam stripper or remover spray + scraper)
2. Wash off residual paste
3. Fill any damage; sand flush
4. Mist coat if exposed plaster
5. Size the wall

For new plasterboard:

1. Tape and fill joints; tape any nail/screw heads (or skim full surface for paint-finish-ready)
2. Two coats of mist coat (diluted emulsion) — important for plasterboard which is much more porous than skim plaster
3. Size the wall

Skipping any of these steps shows in the final result. Papers hung directly on raw plaster, on unsanded gloss, or on flaking wallpaper will fail within months.

Lining paper — when and why

Lining paper is plain paper hung horizontally before wallpaper, providing:

• Even surface and absorbency for the topcoat paper
• Hides small imperfections in the wall
• Helps wallpaper adhere consistently and last longer
• Allows expansion / contraction of the wall to be absorbed by the liner rather than tearing the topcoat

Lining paper grades:

• 800 grade — light; for paint finish over plasterboard
• 1000 grade — standard for medium papers
• 1200 grade — for heavier vinyls and patterns
• 1400 grade — for very heavy or foil papers

Hang lining horizontally (across the wall) so its butt joints don't coincide with the topcoat paper joints. This is called "cross-lining."

Paste selection

For paste-the-paper:

• Cellulose powder mixed with water — standard for most papers
• Heavy-duty cellulose — thicker mix; for vinyl, embossed, heavy papers
• Fungicidal cellulose — for kitchens, bathrooms or any damp-prone room
• Premixed heavy-duty (tub) — convenient; slightly more expensive

For paste-the-wall (non-woven papers):

• Ready-mixed tub paste — usually labelled "ready mix" or "paste-the-wall"

Always check the wallpaper manufacturer's recommendation on the roll label — using the wrong paste can void warranty and cause failure.

The hanging sequence

A typical four-wall room hung in order:

1. Find the start point — drop a plumb line one paper-width less 25mm from a corner or a focal feature (window / chimney breast). Mark vertical reference.
2. Cut the first piece — measure wall height, add 100mm (50mm top, 50mm bottom trim allowance). Check the pattern; the pattern at eye level is the priority for matching.
3. Paste-the-paper:
   • Lay the paper paste-side up on a pasting table
   • Paste from the centre outwards; do not get paste on the face
   • Book (fold) the pasted paper onto itself; soak per label time
4. Paste-the-wall:
   • Paste the wall one paper-width plus 50mm; do not paste face of paper
5. Hang the first piece:
   • Position to the plumb line
   • Smooth from top centre outwards with a wallpaper brush
   • Push the paper into the corner; trim top and bottom with scissors and a sharp utility knife
6. Continue across the wall — butt-joint each subsequent piece; match pattern at eye level; smooth and trim
7. Internal corners — never wrap a full piece into a corner; cut at the corner (with 10mm wrap) and re-start the next piece on a new plumb line
8. External corners — wrap with care; small overlap if needed (read manufacturer instructions)
9. Windows and doors — paper over the opening; trim with knife around frame
10. Switches and sockets — turn off power at consumer unit before exposing; paper over, then trim around faceplate before re-fitting

Pattern matching and waste calculation

Patterns are described as:

• Random match — no pattern alignment needed; each piece can start anywhere. Lowest waste.
• Straight match — pattern aligns horizontally at the same height; horizontal repeat is the dimension of the pattern.
• Drop match (half-drop) — alternate pieces are offset by half a vertical pattern repeat. Highest waste.

Roll labels show:

• Pattern type
• Horizontal repeat (e.g. 53 cm)
• Vertical repeat (e.g. 64 cm)
• Match type (random / straight / drop)

For drop match papers, allow 15–20% more rolls than the strict area calculation suggests.

Common defects and causes

• Bubbles under paper — paste not evenly applied or soaking time wrong; smooth with a pin and brush before drying
• Open seams — paste too thin, drying too fast, or temperature too high. Re-paste edges with seam adhesive
• Pattern out of line at seam — first piece not plumb; or pattern repeat measured wrong
• Paper peeling at top / bottom — paste not applied to edge; trim and re-paste
• Shiny patches at seam — paste on face of paper, not wiped off in time
• Wall showing through pattern — too thin paper for the surface; needs lining paper underneath

Frequently Asked Questions

Can I hang wallpaper over existing wallpaper?

Not recommended. The old paper may not bond well to the new paste; the old paste may have failed; and the result is harder to strip in future. Strip the old paper, prepare the wall, then hang new.

How long should I soak pasted paper?

Per the manufacturer label — typically 2–8 minutes. Soak times allow the paper to absorb paste and expand. Hanging too dry → paper shrinks on the wall and seams open. Soaking too long → paper tears or paste pre-dries.

Do I need to size the wall?

For new plaster and porous surfaces, yes — sizing (with diluted paste or proprietary size) seals the surface so the wall doesn't suck paste out of the paper too fast. For previously-painted matt walls, sizing is still recommended but matters less.

Can I hang wallpaper in a bathroom?

Yes, but use vinyl or foam-vinyl paper rated for damp environments, with fungicidal paste. Allow good ventilation. Wash-down vinyl resists splashes; full-spec waterproof paper is needed for splash zones.

What temperature should the room be?

10–25°C. Below 10°C the paste won't set properly. Above 25°C the paper dries too fast and seams open. Heat the room to a stable temperature 24 hours before starting.

How do I match patterns at internal corners?

You don't — pattern matching breaks at corners. Cut at the corner with 10mm wrap; re-start a new plumb line on the next wall. The pattern will not match across the corner, and trying to make it match causes alignment problems through the rest of the wall.

Can I paint over wallpaper?

Yes for "paintable" papers (Anaglypta, woodchip, plain lining paper) with standard matt or eggshell emulsion. For other papers, it's possible but the result depends on paper porosity and existing colour. Always test in an unobtrusive area first.

Regulations & Standards

• BS 6181 — Specification for paste papers (historic standard, still referenced)

• BS EN 233 — Wallcoverings — Finished wallpaper, wall coverings on a paper base

• BS EN 234 — Wallcoverings — Specification for wallcoverings for subsequent decoration

• BS EN 235 — Wallcoverings — Vocabulary and symbols

• CE / UKCA marking — required on most wallcoverings sold in UK

• VOC content — most wallpaper pastes are very low VOC; check label

• Approved Document B (fire safety) — Class 1 spread of flame for stairwells and escape routes; check wallpaper certification for these areas

• BSI — BS EN 233 / BS EN 234 / BS EN 235 — wallpaper standards

• Wallpaper Industry Association — UK — installer guidance

• Painting and Decorating Association (PDA) — UK trade body

• Polycell technical product guides — paste reference

• Crown Wallpaper — installation guide — manufacturer instructions

• feature wall wallpaper techniques — applying wallpaper as a single feature wall

• wallpaper paste types — paste selection by paper type

• lining paper before decorating — lining paper specification and grade

• interior emulsion — paint finish over paintable papers

• skim coat — surface preparation under wallpaper