Difficulty Level: Beginner
Deposit Risk: High (Rawlplug holes and mismatched touch-up paint are primary targets for letting agent inventory checks)
Time Required: 15 minutes work time (plus drying time)
Estimated Cost: £5–£10
Nails, screws, and picture hooks are the standard way to make a rented house feel like a home. However, the resulting cluster of holes is the number one cosmetic issue highlighted during end-of-tenancy inspections. While many tenants attempt to fill them, the real challenge is making the repair disappear, especially when the wall isn’t a simple “Brilliant White.”
This guide walks you through filling rawlplug holes correctly in plasterboard (drywall) and masonry, achieving a smooth finish, and mastering the “Trade Tester Pot” trick to guarantee a perfect paint match that passes strict inspection.
Tools & Materials Checklist
Tools
- Filling Knife (approx. £3)
- Retractable Utility Knife / Stanley Knife
- Sanding Block or 120-grit Sandpaper
- Small Paintbrush / Artist’s Brush
Materials
- Lightweight Filler (e.g., Polyfilla One Fill or Tetrion Light). For deep holes (>10mm), use a two-part or deep-gap filler first.
- Trade Tester Pot (Dulux Trade, Crown Trade, or specific match) or a small sample from B&Q. See the ‘Paint Matching’ section below for instructions.
- Sugar Soap Wipes (for cleaning scuffs around the hole)
Step-by-Step Instructions
Step 1: Prep the Hole (The Most Important Step)
The common mistake is filling straight away. This leaves a small volcano-like lip around the hole, which is always visible.
- Use your Stanley knife to cut away any loose paper, frayed paint, or protruding rawlplug plastic from the perimeter of the hole.
- Aim to create a very shallow, clean crater rather than a bump.
Step 2: Clear Out Dust & Widen if Necessary
- For masonry walls (which are solid brick), ensure all residual brick or plaster dust is cleared. A quick vacuum with a crevice nozzle works well.
- If filling a masonry rawlplug hole, you do not need to drill it out.
Step 3: Fill the Cavity
- Use a standard lightweight filler. These dry rapidly with minimal shrinkage.
- Load a small amount onto your filling knife and press it firmly into the hole to ensure it fills the void completely. Do not build up layers unless the filler specifically tells you to.
- Apply slightly more filler than required, so it sits just proud of the wall surface. Do not try to smooth it perfectly flush at this stage.
Step 4: Sand to a Invisible Finish
- Allow the filler to dry completely. Lightweight fillers usually dry in 30–60 minutes.
- Use a fine-grade sandpaper (120-grit) on a sanding block. Sand the filler using gentle, circular motions until it is perfectly flush with the surrounding wall.
- Run your fingers over the repair with your eyes closed. You should not be able to feel the transition from wall to filler.
Step 5: Clean the Area
- Wipe away the fine sanding dust with a slightly damp cloth.
- If the wall is scuffed, use sugar soap to clean the surrounding 10cm area. Fresh paint will not adhere properly to greasy marks or finger stains, which causes the paint to “flash” (the repair becomes visible as a patch).
Mastering Paint Matching
This is where standard DIY guides fail. You cannot just buy “Magnolia.” There are hundreds of variations, and faded paint will never match new paint.
The Trade Tester Pot Trick
- Locate the Hidden Area: Find an inconspicuous spot to test your color—behind a radiator, inside a cupboard, or just above the skirting board behind a door.
- Identify the Likely Color:
- Most UK rented homes (post-2010) are painted in either Dulux Trade Supermatt Magnolia (which is a slightly cooler, “creamier” tone) or Brilliant White Matt.
- Do not buy cheap “contractor white,” which often has a grey cast.
- Take a small paint flake (from an unnoticeable spot) or use a colour-matching app (like Dulux Visualizer) to confirm.
- Get the Trade Pot: Go to Screwfix, Wickes, B&Q, or a trade counter and buy a Trade Tester Pot, not a standard retail sample. Trade paint has much higher opacity.
- Sample and Check: Paint a small swatch of the Trade tester color in your hidden location. Let it dry completely (1 hour). It will dry lighter.
Application (Feathering)
- Never paint just the filled circle.
- Dilute a tiny amount of the tester paint with water (1 part water to 5 parts paint) to match the likely thinness of the existing aged wall paint.
- Using a dry, small paintbrush or a makeup sponge, apply the paint over the smooth filler and then softly “feather” or blend the edges outwards 5–10cm into the original wall color. Do not leave a hard, painted edge.
Expected Inventory Result
A perfectly smoothed fill and a feathered paint match using trade-quality materials results in an invisible repair. This passes checkout inventory checks under the “Clean & Well-Maintained” or “No Visible Markings” rating, completely eliminating the £100+ “full wall repainting” deduction threats.