How To Wallpaper A Room

Wallpapering a room can transform a space quickly, whether you are refreshing a tired bedroom or adding character to a feature wall. Done properly, it looks sharp, lasts for years and avoids the patchy finish that sometimes comes with poor paintwork. This guide explains how to wallpaper a room from a practical UK trades perspective, including preparation, materials, typical costs, and common mistakes that lead to poor results.

Is wallpapering the right choice for your room?

Before you start, consider whether wallpaper is actually the best finish. In high moisture spaces like bathrooms, you will need specialist vinyl papers and good ventilation. In kitchens, grease and humidity can reduce lifespan unless surfaces are properly prepared and sealed.

For straightforward decorating jobs, paint may be the better option. If you are unsure, it is worth reviewing Choosing the Right Paint Finish for Different Surfaces and comparing durability, maintenance and cost against wallpaper.

Also consider the condition of the room. Wallpaper can disguise minor colour variations, but it will not conceal loose plaster, deep cracks, prominent ridges or damp staining. Strong directional light from a window can make poor seams and surface defects particularly noticeable.

Wallpaper is often a good choice for bedrooms, dining rooms, halls and living spaces. Washable vinyl products may suit busy family areas, while delicate printed papers are better kept away from frequent contact, steam and splashes.

Tools and materials you will need

A professional finish relies on proper kit. Most DIY issues come from cutting corners here.

• Wallpaper paste or ready mixed adhesive suited to your paper type
• Paste brush or roller
• Wallpaper smoothing brush or plastic smoother
• Sharp trimming knife and spare blades
• Spirit level or laser level
• Plumb line or chalk line
• Step ladder
• Pasting table or clean flat surface
• Seam roller
• Measuring tape and pencil
• Dust sheets

A long straight edge, clean bucket, sponge, scissors and snap blade knife are also useful. Keep a separate clean cloth for the face of the paper. Paste left on printed surfaces can dry shiny or damage delicate inks.

Expect to spend between £40 and £120 on tools if you do not already own them. Professionals often use laser levels now for speed and precision, especially in larger rooms.

Preparing the walls properly

Preparation is where most of the work sits. Time spent here will show in the final result.

Remove existing wallpaper

If there is old wallpaper, it must come off fully. Hanging over existing paper nearly always leads to bubbling or peeling later. If you need a proper process, follow How to Remove Wallpaper in a UK Home Without Damaging Plaster Step by Step Methods Tools and Clean Up Tips.

After stripping, wash away old adhesive with clean warm water and a suitable wallpaper remover where needed. Allow the wall to dry before assessing it. Residual paste can reactivate beneath the new covering and cause blisters or poor adhesion.

Repair the surface

Inspect plaster for cracks, blown areas or holes. Fill with a suitable filler, sand smooth and allow to dry fully. In older UK homes, particularly pre 1930s properties with lime plaster, be gentle and avoid over sanding.

Run a broad filling knife across the wall to find raised filler and old paint edges. Shine a work light along the surface rather than directly at it. Side lighting reveals ridges that may show through the finished paper.

Remove loose and flaking paint. Wash greasy areas and rinse away cleaning residue. Any mould should be treated only after the moisture source has been identified and corrected.

Seal and prime

Fresh plaster must be fully dry before wallpaper is applied. Drying time depends on plaster thickness, background, ventilation and room temperature. A uniform pale colour is a useful indication, but the plaster and wallpaper manufacturers' instructions should determine when the surface is ready.

Use the primer, sealer or wallpaper size specified by the wallpaper and adhesive manufacturer. Bare plaster, repaired patches, highly absorbent walls and glossy painted surfaces can require different preparation products. A purpose made wallpaper primer often controls suction and provides a consistent surface more reliably than a general paint mixture.

A diluted emulsion mist coat may be suitable as part of decorating some new plaster surfaces, provided the paint manufacturer permits it. However, a fixed formula of 70 percent paint and 30 percent water is not suitable for every paint, plaster or wallpaper system. Some emulsions should not be diluted by that amount, and some wallpaper makers require a dedicated primer or size instead.

Follow the stated dilution, application and drying instructions for the chosen product. Allow each coat to dry fully before hanging. Applying wallpaper over damp primer can trap moisture and weaken the bond.

Use lining paper where necessary

Lining paper can improve a wall that has widespread fine cracking, numerous filled repairs or minor surface variation. It creates a more even background and can reduce the risk of joints or colour differences showing through delicate wallpaper.

It is not a substitute for repairing loose plaster, damp or major unevenness. Significant defects must still be corrected first. Choose a lining grade that suits the wall condition. Common grades range from around 800 to 2000, with heavier paper used for rougher surfaces.

Lining paper is usually hung horizontally when decorative wallpaper will be hung vertically. This reduces the chance of the two sets of seams sitting directly on top of each other. The lining paper must be allowed to dry fully before the finish paper is applied. Follow the adhesive instructions, particularly on porous walls and with heavier grades.

Check for damp

Wallpaper will not hide damp problems. It will make them worse. Look for signs like staining or flaking plaster. If you suspect damp, address it first. The UK government provides guidance on damp and mould here https://www.gov.uk/government/publications/damp-and-mould-understanding-and-addressing-the-health-risks.

Measuring and calculating wallpaper

Accurate measurement saves money and avoids mid job shortages.

Measure the perimeter of the room and divide by the width of the wallpaper roll, usually 52 cm in the UK. Then calculate drop length from ceiling to skirting, adding around 10 cm for trimming.

Most standard UK wallpaper rolls are approximately 10.05 metres long and 0.52 or 0.53 metres wide. The nominal coverage may be shown as about 5.2 square metres. That figure assumes the whole roll can be used efficiently. It can be misleading for patterned wallpaper because each usable drop must start at the correct point in the design.

Calculate the number of drops

Measure each wall width and divide it by the roll width. Round every result up to a whole drop. For a wall measuring 3.8 metres wide and a paper measuring 0.52 metres wide, the calculation is 3.8 divided by 0.52, which gives 7.31. That wall therefore needs eight drops.

Repeat this for each wall rather than relying only on the total floor area. Measure the full height in several places because ceilings and floors are not always level. Use the greatest measurement and add trimming allowance at the top and bottom.

Allow for the pattern repeat

The pattern repeat is the vertical distance before the design starts again. A straight match means adjoining drops align at the same height. A drop match means the neighbouring length must be moved vertically to align the design. Some products state both the repeat and the offset on the label.

For plain wallpaper or a free match design, a room height of 2.4 metres plus 10 cm trimming allowance gives a cutting length of 2.5 metres. A 10.05 metre roll may therefore provide four drops.

For a paper with a 64 cm repeat, the cutting length must normally be rounded up to the next complete pattern repeat. Four repeats measure 2.56 metres, which is enough to cover a 2.5 metre cutting requirement. A 10.05 metre roll then provides only three complete drops because four lengths would require 10.24 metres.

Pattern position can sometimes be adjusted to gain an additional drop, but do not depend on this before physically checking the roll. Large motifs and drop matches often create more waste than the simple square metre figure suggests.

Worked example for a typical UK bedroom

Consider a rectangular bedroom measuring 3.6 metres by 3 metres, with a wall height of 2.4 metres. The total perimeter is 13.2 metres. Using wallpaper that is 0.52 metres wide, 13.2 divided by 0.52 gives 25.38, so the room requires 26 drops before deductions.

Add 10 cm to the measured wall height for trimming. The required drop is therefore 2.5 metres.

If the wallpaper has no pattern repeat, a standard 10.05 metre roll provides four drops at 2.5 metres each. Dividing 26 drops by four gives 6.5, so seven rolls are required before contingency.

Now assume the chosen paper has a 64 cm straight pattern repeat. The 2.5 metre cutting length must be rounded to 2.56 metres. Only three complete drops can safely be taken from each roll. Dividing 26 by three gives 8.67, so nine rolls are required before contingency.

The room has one standard door and a window. Large openings may reduce the amount used, but deductions need care. The short pieces above a door or below a window can sometimes be cut from offcuts. However, the pattern must still align with the adjoining full drops.

For this room, a cautious allowance might reduce the requirement by one full drop for the door and two full drop equivalents for the window. That leaves approximately 23 drops. At three drops per patterned roll, eight rolls are theoretically enough.

Buy one extra roll as a contingency, taking the order to nine rolls. The additional roll covers cutting errors, hidden wall variations and possible future repairs. For expensive paper, confirm the calculation with the supplier before ordering.

Check batch numbers

All rolls used in the same room should normally carry the same batch number or shade number. Wallpaper is printed in production runs, and small differences in ink, texture or background colour can occur between batches. These variations may be difficult to see while the paper is rolled, yet obvious once several drops are hanging in daylight.

Check every label before opening the protective wrapping. Keep the labels until the room is complete because they contain the pattern number, batch details and adhesive guidance. If different batches cannot be avoided, use them on separate walls or in less visible areas rather than mixing them across one continuous wall.

Always buy one extra roll to allow for mistakes or future repairs. A spare roll from the same batch is more useful than trying to source a replacement several years later.

Cost breakdown for wallpapering a room

Item	Typical UK Cost
Wallpaper per roll	£10 to £60, premium designer papers can exceed £100
Adhesive	£5 to £15 per room
Tools	£40 to £120 one off
Wallpaper stripping	£100 to £250 for an average room
Filling and local wall repairs	£75 to £250 depending on condition
Lining paper materials and installation	£150 to £350 for an average room
Professional labour	£150 to £350 per room depending on size and complexity
Feature wall installation	£100 to £200 labour only
Plaster repairs or extensive preparation	£250 to £800 or more where walls are badly damaged

Tradespeople rates vary by region. In London and the South East expect prices at the higher end. Patterned or textured papers take longer and cost more due to alignment and handling.

A labour quotation of £150 to £350 commonly assumes that the walls are already sound, stripped and ready for paper. It may not include removing existing coverings, extensive filling, sanding, lining paper or repairing damaged plaster. A complete room with substantial preparation may cost £500 to £1,000 or more in labour and preparation before the cost of premium wallpaper is added.

Ask whether VAT is included. A VAT registered decorator will usually show VAT within a consumer quotation or clearly identify it as an additional amount. Sole traders operating below the registration threshold may not charge VAT.

Confirm whether wallpaper, adhesive, primer and lining paper are included. Many decorators quote labour only because homeowners choose and purchase the finish paper themselves. Also ask whether the price includes protection, furniture movement and waste removal. Small amounts of clean wallpaper waste may be removed as part of the job, but stripping debris and bulky waste can attract an additional charge.

Costs rise where plaster is loose, walls need extensive filling, ceilings are high or access is restricted. Stairwells, bay windows, chimney breasts, multiple corners and radiator removal all add time. Intricate drop match designs, murals, grasscloth, flock and handmade papers require slower handling and can increase both labour and material waste.

How to wallpaper a room step by step

1. Mark your starting line

Always start from a plumb vertical line rather than a corner, as corners are rarely straight. Use a spirit level or laser. This ensures every subsequent drop stays aligned.

Choose the starting point with the room layout in mind. On a feature wall, start close to the centre so the design appears balanced. In a full room, begin beside a window or another clear vertical reference and plan where the final join will fall. Avoid placing a narrow finishing strip in the most prominent part of the room.

2. Cut your first lengths

Cut lengths slightly longer than wall height. If you have patterned paper, line up the pattern before cutting successive drops.

Number the reverse of each drop lightly in pencil and mark the top. Cut several drops only after checking that the walls are a consistent height and that the pattern match is understood. For expensive paper or uneven rooms, cutting one or two lengths at a time reduces costly mistakes.

3. Apply paste

Follow the wallpaper manufacturer guidance. Some modern papers are paste the wall rather than paste the paper. Traditional papers require even paste coverage and a short soaking time.

Paste the wall products

Paste the wall wallpaper usually has a dimensionally stable backing. Apply adhesive evenly to the wall with a roller, covering an area slightly wider than one drop. Use a brush at ceilings, corners and skirtings. Do not paste too far ahead because the adhesive may begin drying before the paper is positioned.

The dry roll can often be cut at the wall, although precutting is safer where patterns need careful alignment. Use only the adhesive specified for the product. Heavy vinyl and non woven papers may need a stronger ready mixed adhesive.

Paste the paper products

Traditional paper must be laid face down on a clean pasting table. Apply an even coat from the centre towards the edges, ensuring that no dry patches remain. Avoid getting paste on the printed face.

Fold the pasted length loosely, pasted side to pasted side, without creasing it. This is sometimes called booking. Leave it for the exact soaking time stated on the label. Consistent soaking matters because unevenly soaked drops can expand by different amounts and shrink back to reveal joins.

4. Hang the first drop

Position the top of the paper and gently smooth downward using a brush or smoother. Work from the centre outwards to remove air bubbles.

Leave a small excess at the ceiling. Align one edge precisely with the plumb line and allow the other edge to fall naturally. Do not pull or stretch wet paper to make it fit. Stretching can cause open seams once the material dries.

5. Trim edges

Use a sharp knife to trim excess at ceiling and skirting. Blunt tools will tear the paper, so change blades frequently.

Press the paper into the junction with a broad filling knife or trimming guide. Make a clean cut, then wipe away paste immediately with a damp sponge. On delicate wallpaper, test the sponge on an offcut and blot rather than scrub.

6. Match and hang subsequent strips

Align patterns carefully and butt joints tightly without overlapping. Use a seam roller lightly to secure joints.

Match the design at eye level first, then work upwards and downwards. The edges should touch without being forced together. Check each drop from a short distance before moving on, since a small mismatch can become more obvious across the wall.

A seam roller is useful on robust papers but can mark embossed, flocked or textured finishes. For those products, use a clean smoothing brush and follow the manufacturer's instructions. Remove paste from the seam before it dries.

7. Handle internal and external corners

Do not take a full width of paper around an internal corner unless the corner is unusually straight. Measure from the edge of the last drop to the corner at several points. Cut the next piece so that about 15 mm wraps onto the adjoining wall.

Hang the piece and press it carefully into the corner. Mark a new plumb line on the adjoining wall, then hang the remaining section so it overlaps the narrow return. Where the paper allows, a double cut through both layers can create a neat butt joint. Take care not to cut deeply into plaster.

External corners need good adhesion and a sound, straight edge. Wrap around the corner by at least 20 mm where possible, then establish a new plumb line for the next drop. If the corner is badly uneven, splitting the drop and forming a controlled overlap is often neater than forcing a full width around it.

Thin paper may show overlaps. Vinyl products can require a specialist overlap adhesive where one vinyl surface sits over another. Check the product instructions before using this method.

8. Work around windows and doors

Hang the full drop over the side of the opening, then make a horizontal relief cut towards the corner of the frame. Smooth the paper into the reveal and trim carefully against the frame. Do not make the initial cut too long because this can leave a visible gap.

Above windows and doors, continue the pattern using offcuts where their design position matches. Maintain the plumb line across the opening. If the drops on either side lean inwards, the mismatch can become obvious above the window.

At a deep window reveal, plan whether the paper will continue into the reveal or finish at the external corner. The choice depends on the wallpaper, wall condition and room design. Papering a reveal gives a continuous finish but needs accurate cuts at the head and sill.

9. Work around sockets and switches safely

For sockets and switches, turn off the electricity at the consumer unit. The Health and Safety Executive provides guidance on safe isolation here https://www.hse.gov.uk/electricity/. Remove faceplates, cut neatly around openings, then refit once dry.

Isolate the correct circuit and prove it is dead with suitable testing equipment before loosening any electrical accessory. Switching off a wall switch is not enough. Keep paste, water and damp wallpaper away from cables, terminals and electrical fittings.

Do not disconnect conductors unless you are competent to do so. If you cannot safely isolate the circuit, prove it is dead, remove the faceplate or refit it correctly, use a qualified electrician. Never leave a loosened accessory unsupported by its cables.

Where the faceplate can be safely eased forward without disturbing the wiring, cut a small cross in the paper over the accessory opening. Trim the paper so it sits behind the faceplate, keeping it clear of the electrical box and terminals. Refit the accessory only after excess paste has been removed and the area is dry.

If you plan to reinstall heavy items after decorating, review How to Hang Heavy Décor Items Securely to avoid damaging your new finish.

10. Paper behind radiators

Turn the heating off and allow the radiator to cool. If access is adequate, cut the paper to drop behind it and use a radiator roller or a clean cloth wrapped around a flat tool to smooth it into place.

Mark and cut around brackets and pipes carefully. Small relief cuts allow the paper to settle without tearing. Keep paste away from radiator valves and wipe the front surface clean immediately.

Removing a radiator can produce a better finish, but it involves closing valves, draining water and refilling the heating system. Older valves may leak once disturbed. Use a competent heating engineer or plumber if you are not confident with the system.

11. Allow proper drying time

Keep windows slightly open but avoid strong drafts or high heat, which can cause shrinkage. Most wallpapers dry within 24 to 48 hours depending on conditions.

Maintain a steady room temperature and gentle ventilation. Do not direct a fan heater at the walls or turn radiators up sharply. Rapid drying can pull seams apart, curl edges and cause uneven shrinkage.

Cold, damp rooms take longer to dry. Avoid replacing pictures, shelves or heavy furniture against the wall until the adhesive has cured. Some heavy wallcoverings need longer than 48 hours, so follow the product guidance.

Wallpapering ceilings and feature walls

Ceiling wallpapering is specialist work. It requires at least two people and careful handling to avoid sagging. Most homeowners should leave this to professionals.

Feature walls are far more achievable. They allow you to practise without committing to a full room and are popular in living rooms and bedrooms.

For a feature wall, check how the main motif will sit behind a bed, fireplace or television. Centring the design may require starting from the middle and working outwards rather than beginning at one side.

How long does wallpapering take?

For an average UK bedroom:

• Preparation, 4 to 8 hours depending on wall condition
• Hanging wallpaper, 4 to 6 hours for plain paper
• Patterned wallpaper, up to a full day

Professionals often complete a room in one day if preparation is straightforward. DIY jobs usually take longer, especially the first time.

Stripping stubborn vinyl wallpaper, repairing plaster or installing lining paper may add one or two days. Drying periods between preparation, lining and final hanging also need to be included in the programme.

Common mistakes to avoid

Even experienced DIYers run into issues. These are the problems tradespeople most often get called in to fix.

• Poor wall preparation leading to bubbling and peeling
• Starting from an uneven corner instead of a plumb line
• Using the wrong adhesive for the paper type
• Not allowing for pattern repeat, causing wasted rolls
• Overstretching wallpaper during application
• Blunt blades tearing edges during trimming
• Hanging over damp or unstable surfaces

Fixing these issues usually costs more than doing the job properly from the start. In some cases, the entire wall has to be stripped and redone.

Troubleshooting lifting edges

Edges may lift because the wall is dusty, paste coverage is thin, the paper has dried too quickly or the soaking time was incorrect. If the paper is otherwise sound, lift the affected edge gently and apply a small amount of suitable seam adhesive with a fine brush.

Press the edge back without stretching it. Remove excess adhesive with a clean damp sponge and hold the seam flat if required. Do not use general purpose glue because it can stain the wallpaper and make later removal difficult.

Repeated lifting usually indicates a preparation or moisture problem. Check for unstable paint, excessive wall suction and damp before attempting further repairs.

Troubleshooting visible joins

Dark joins can be caused by gaps between drops, wallpaper shrinkage or a contrasting wall colour showing through. Preparing the wall in a similar base colour can reduce this risk with dark papers, provided the chosen primer is compatible with the adhesive.

White lines on dark wallpaper sometimes come from exposed cut edges. Colouring the edge before hanging may be recommended for certain premium papers, but only use a product approved by the wallpaper supplier.

Raised seams can result from too much paste, adhesive squeezed beneath the edge or excessive seam rolling. Allow the paper to dry naturally before deciding whether repair is needed. Reworking wet seams repeatedly often makes the problem worse.

Troubleshooting bubbles

Small bubbles may disappear while the paper dries. Larger bubbles can indicate trapped air, a dry patch or debris under the paper. While the adhesive is wet, lift the nearest edge and smooth the bubble out.

Once dry, a small adhesive blister can sometimes be treated by injecting the correct adhesive through a tiny cut and smoothing it flat. Prominent bubbles caused by loose paint or plaster may require the affected drop to be removed and the background repaired.

Wallpaper vs paint, which is more practical?

Wallpaper offers texture and pattern that paint cannot match, but it is less forgiving. Paint is easier to touch up and often cheaper. If you are weighing options, see How To Paint A Room for a full comparison process.

Good quality wallpaper can last for many years in a dry, well ventilated room. Paint generally needs less preparation when changing colour, while removing wallpaper can be labour intensive. Your choice should reflect the wall condition, likely wear and how often you expect to redecorate.

Checklist before you start wallpapering

• Walls stripped, repaired and sealed
• Fresh plaster fully dry
• Damp issues resolved
• Correct primer, size and adhesive selected
• Enough wallpaper purchased including extra roll
• All roll and batch numbers checked
• Pattern repeat and match type confirmed
• Sharp blades and proper tools ready
• Electrical points safely isolated if needed
• Clear working space and dust sheets down
• Room temperature and ventilation suitable for drying

Working with a professional decorator

If the job involves high ceilings, expensive paper or complex patterns, hiring a decorator is often the better route. Skilled tradespeople reduce waste, complete faster, and achieve a clean finish at junctions and corners.

Always check recent work, confirm whether preparation is included, and clarify waste disposal. Most decorators will provide a day rate or a fixed quote after seeing the room.

Show the decorator the wallpaper label or specification before accepting a price. Specialist products may need a particular primer, adhesive or installation method. Confirm who is responsible for measuring and ordering, since liability for shortages can depend on who supplied the material.

Ask whether the quote includes stripping, surface repairs, lining paper, radiator removal, furniture movement, VAT and materials. A written scope makes it easier to compare quotations fairly.

FAQ

How do I know how many rolls of wallpaper I need?

Measure the wall width and height, then calculate coverage based on roll dimensions. Factor in pattern repeat as this increases waste. As a rule, add one extra roll beyond your calculation to avoid running short.

Calculate usable drops per roll rather than relying only on the nominal square metre coverage. Check the roll width, length, pattern repeat and match type shown on the label.

Can I wallpaper over painted walls?

Yes, as long as the surface is sound, clean and slightly keyed. Gloss paint should be lightly sanded to improve adhesion. Use a primer if the surface is very smooth or absorbent.

Wash away grease and dust after sanding. Test questionable paint with adhesive tape or a scraper. If the coating lifts easily, remove the unstable material before proceeding.

Do I need to size walls before wallpapering?

Bare plaster and repaired walls often require a suitable wallpaper primer or size to control suction and improve adhesion. The correct treatment depends on the wall, adhesive and paper type. Follow the wallpaper and adhesive manufacturer's instructions rather than assuming that one diluted emulsion formula suits every surface.

Why is my wallpaper bubbling after hanging?

Bubbling usually comes from trapped air, uneven paste application or poor wall preparation. Small bubbles often settle as the adhesive dries, but larger ones may need lifting and re smoothing.

Why can I see the wallpaper seams?

Visible seams can result from gaps, uneven pattern matching, rapid drying, insufficient adhesive or shrinkage caused by overstretching. A contrasting wall colour can also show through very small gaps. Correct preparation, consistent soaking and controlled drying reduce the risk.

Can wallpaper be hung over lining paper?

Yes. Lining paper can provide an excellent base once it is fully dry, firmly bonded and free from raised seams. Decorative wallpaper is usually hung in the opposite direction so that its seams do not coincide with the lining paper joints.

Is wallpaper suitable for bathrooms?

Only specific moisture resistant products should be used, and ventilation must be adequate. Without this, edges can peel and mould can develop behind the paper.

Avoid papering areas exposed to direct shower spray or persistent condensation unless the manufacturer specifically approves the product for that use.

Final Thoughts

Wallpapering a room is one of those jobs where preparation and precision matter more than speed. Take the time to get the walls right, use the correct materials, and work methodically from a true vertical line. The difference between a DIY finish and a professional result often comes down to small details that are easy to overlook.

Calculate rolls from usable drops, check every batch number and follow the specified primer, adhesive and soaking instructions. Pay particular attention to corners, windows, electrical fittings and drying conditions. These areas are where rushed work is most likely to show.

If you would rather leave it to an experienced decorator, you can post a job on BookaBuilderUK and get free quotes from vetted local tradespeople.