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    Interior Painting: Preparation, Products and Professional Results
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    16 September 20269 min read

    Interior Painting: Preparation, Products and Professional Results

    Painting is 70% preparation. Here is the order professionals work in, which paint suits which room, and when it is worth paying someone else.

    M

    The Marketit editorial team

    Specialists in the service industry

    Published: 16/09/2026Last updated: 16 September 2026

    Summary

    • Preparation — fill, sand, clean, caulk, prime — decides the finish.
    • Paint ceiling, then walls, then woodwork.
    • Use bathroom- and kitchen-grade paints in wet or greasy rooms.
    • One litre covers 10–12 m²; one gallon covers 350–400 sq ft per coat.
    • Hire a decorator for stairwells, spray work and wallpapering.

    Quick answer

    Preparation decides the finish. Fill, sand, clean and prime properly, then paint ceiling first, walls second, woodwork last. Two coats of a mid-priced paint beat one coat of an expensive one.

    Preparation: the part people skip

  1. Empty and protect. Move furniture to the middle, cover with dust sheets, remove socket covers rather than taping around them.
  2. Clean. Sugar soap or degreaser, especially in kitchens and above radiators. Paint will not bond to grease.
  3. Fill. Fill holes and cracks, let it dry fully, then sand flush. Deep holes need two passes.
  4. Sand. Lightly key glossy surfaces so new paint grips.
  5. Caulk gaps between woodwork and walls — this single step makes amateur work look professional.
  6. Prime. Bare plaster needs a mist coat, bare wood needs primer, stains need a stain-blocker or they will bleed through forever.
  7. Which paint where

    RoomFinishWhy
    Living room, bedroomMatt emulsionHides imperfections, soft look
    Hallway, children's roomsWashable matt or eggshellSurvives cleaning
    KitchenKitchen-grade or eggshellGrease and steam resistant
    BathroomBathroom-grade, mould resistantMoisture and condensation
    WoodworkWater-based satin or eggshellLow odour, non-yellowing
    CeilingsCeiling mattMinimal spatter, hides unevenness

    Coverage and quantities

    One litre covers roughly 10–12 m² per coat; one US gallon covers roughly 350–400 sq ft. Measure wall area, subtract large windows and doors, then double it for two coats and add 10%.

    Order of work

  8. Ceiling
  9. Walls
  10. Woodwork: skirting, architrave, doors, windows
  11. Radiators and final touch-ups
  12. Cut in edges with a brush while the roller area is still wet so the textures blend. Keep a wet edge and work in sections rather than stopping mid-wall.

    Tools that change the result

  13. A good 2-inch angled brush for cutting in
  14. A medium-pile roller for emulsion, short-pile for smooth finishes
  15. An extension pole — faster, and more even pressure
  16. Quality low-tack masking tape, removed while the paint is just touch-dry
  17. A damp cloth kept in your pocket for immediate drips
  18. When to hire a decorator

    Stairwells and high ceilings (access equipment and real risk), spray finishes on doors and joinery, wallpapering, significant plaster repair, or when you simply need three rooms finished in two days. Get quotes on a written specification: rooms, coats, paint brand and grade, preparation included and who buys materials.

    Summary

    Spend your time on filling, sanding, caulking and priming; use the right grade of paint for each room; work ceiling to woodwork. That sequence is the whole difference between a decorated room and a painted one.

    Frequently asked questions

    painting
    decorating
    diy
    home improvement