Wallpaper removal and plastering

While wallpaper removal might seem like a simple weekend task, the state of the underlying plaster frequently requires professional intervention. A professional plasterer ensures that once the layers of paper and paste are gone, the wall is structurally sound, perfectly level, and finished to a "master" standard that DIY efforts rarely achieve.

What Does the Work Involve?

• Protection: Covering flooring, furniture, and radiators with heavy-duty plastic or drop cloths to manage water and wet plaster.
• Stripping: Using steamers, scoring tools, or chemical stripping agents to remove multiple layers of paper and stubborn woodchip.
• Cleaning: Removing residual paste and size with sugar soap to ensure the new plaster bonds correctly to the substrate.
• Assessment: Tapping the walls to identify "blown" (hollow) plaster that needs to be hacked off and replaced.
• Preparation: Applying a bonding agent (like PVA or Blue Grit) to provide "key" for the new plaster coat.
• Plastering: Applying a two-coat skim of multi-finish plaster to create a glass-smooth surface.
• Snagging: Lightly sanding any minor imperfections once dry and ensuring internal corners are sharp and clean.

Typical Costs

Prices vary based on your location in the UK (with London and the South East commanding a 20-30% premium) and the condition of the walls beneath the paper. These estimates include VAT and materials for 2025/26.

The primary cost drivers are the number of layers of paper and the state of the original lime or gypsum plaster. If the base plaster is failing extensively, you may require a full "hack-off and re-render," which can double the material and labour costs.

How Long Does It Take?

• Single Small Room: 1–2 days (Day 1: Stripping and prep; Day 2: Skimming).
• Large Living/Dining Area: 2–3 days depending on the complexity of coving and corners.
• Full House: 7–14 days for a standard three-bedroom property.
• Drying Time: 3–5 days in a well-ventilated room before the first "mist coat" of paint can be applied.

DIY or Professional?

Homeowners can save money by stripping the wallpaper themselves, but the plastering stage is almost always best left to a professional. Plastering is a "perishable" skill; the material sets quickly, and achieving a flat, trowel-mark-free finish requires years of practice. Additionally, if your home was built before 1999, old textured wallpapers or decorative finishes (like Artex) may contain asbestos, requiring professional testing before disturbance.

Pro Tip: If you strip the paper yourself, be careful not to gouge the base plaster with a scraper, as this creates more work (and cost) for the plasterer to fill.

Choosing the Right Tradesperson

• Check Credentials: Look for City & Guilds or NVQ Level 2/3 in Plastering.
• Cleanliness: A good plasterer is judged by how they leave the site. Ask if they provide their own floor protection.
• Portfolio: Ask for photos of "polished" finishes, not just wet plaster.
• Questions to Ask:
  • Are you insured for public liability?
  • Does the quote include the removal of waste paper?
  • Will you be using a bonding agent like Blue Grit or just PVA?
  • How many days do you recommend waiting before I paint?

UK Regulations

• Part P (Electrical Safety): If sockets or switches need to be moved or "popped out" to plaster behind them, this should be done by a competent person to ensure no live wires are exposed to wet plaster.
• Asbestos Regulations: Any textured coatings or paper backings applied before 2000 should be sampled if there is a risk of them containing chrysotile.
• Building Regs: Generally not required for internal skimming, unless you are replacing more than 25% of the plaster on a "thermal element" (an external wall), which may trigger a requirement to upgrade insulation.

Common Problems

• Blown Plaster: Stripping paper often pulls away loose chunks of old plaster. If this isn't hacked back to a solid edge, the new skim will eventually crack or fall off.
• Efflorescence: White salty deposits appearing on new plaster usually indicate a lingering damp issue that must be solved before skimming.
• Over-polishing: If a plasterer "works" the surface too much with water, it can create a finish so shiny that paint fails to adhere properly.
• Cracking: Small hairline cracks (crazing) can occur if the room is too hot or if the plaster dries too quickly due to a thirsty substrate.

Frequently Asked Questions

Can I paint straight onto the new plaster once it's dry?

No. New plaster is highly absorbent. You must apply a "mist coat" (a mixture of watered-down emulsion) first. If you apply full-strength paint immediately, it will likely peel off in sheets later.

How do I know if my plaster is "blown"?

Gently tap the wall with your knuckles. If it sounds hollow or "drummy" compared to other areas, the plaster has detached from the brickwork or laths and needs to be replaced.

Does the plasterer need the radiators removed?

It is highly recommended. While you can plaster around them, you will never get a perfect finish, and the heat from a working radiator can cause the new plaster to crack. Most plasterers prefer them removed and capped off.

How long should I wait before painting?

In the UK, you should wait until the plaster has turned from a dark brown/pink to a uniform light pink. This usually takes 3 to 7 days depending on the weather and ventilation.

Why is woodchip wallpaper more expensive to remove?

Woodchip contains small pieces of wood that prevent steam from penetrating the paper easily. It often comes off in tiny fragments rather than full sheets, doubling the labour time.

Is it messy?

Yes. Plastering involves water, wet mix, and dust. A professional will mask up the room, but you should ideally remove all soft furnishings and electronics from the area before work begins.