The Fitter's Snagging Guide: Fixing Install Damage Before Handover

Every install picks up a few marks. A drill bit skids, a carcass corner catches a door frame on the way upstairs, a pin hole goes in slightly off. None of it is a disaster, but the customer will spot it, and a callback for a 2mm chip costs far more in time and fuel than fixing it before you leave.

This guide is the snagging routine: how to find the damage, decide which fix suits it, and repair it so it disappears. It's written for wardrobe, kitchen and bedroom fitters working with melamine-faced board, MDF and wrapped doors.

Step 1: Walk the Job Before You Pack Up

Most snags are missed because they're invisible under ceiling light and obvious in daylight. A consistent walk catches them first time:

1. Use raking light. Hold a torch almost flat against each panel. Scratches, dents and filled holes throw a shadow that straight-on light hides.
2. Work top to bottom, left to right. Plinths and the top edges of tall units get forgotten. So do the insides of doors once they're closed.
3. Run a finger along exposed edges. Edge chips and lifted banding are easier to feel than see.
4. Open everything. Hinge screws, shelf-pin holes in the wrong row, and fixing screws inside carcasses all count on a fitted wardrobe.
5. Note the board codes while you're there. The decor code on an offcut label (Egger, Finsa or Kronospan) is your fastest route to an exact colour match.

Step 2: Match the Fix to the Damage

Caps and wax do different jobs. Using the right one is what makes the repair invisible.

Step 3: The Wax Repair, Done Properly

Soft wax needs no heat and no drying time, so the whole repair takes a minute or two. The difference between a visible patch and an invisible one is levelling and buffing.

1. Clean the area. Remove dust and swarf from the chip or hole. Wax won't bond to sawdust.
2. Pick the colour. If you have the board code, use the matching crayon. Otherwise choose the closest shade and lean slightly darker. A fill that's a touch dark reads as shadow; one that's too light stands out.
3. Fill slightly proud. Rub or press the wax into the damage until it sits just above the surface. For edges, use the angled, flexible end of the wax applicator tool to push wax into the chip and follow the edge profile.
4. Level it flush. Draw the serrated edge of the applicator across the fill to remove the excess. Keep the tool flat to avoid dragging wax out of the repair.
5. Buff. Polish with a clean, soft cloth to match the sheen of the surrounding board.
6. Re-check in raking light. If you can still see an outline, the fill is low or the colour is off. Top up or adjust the shade.

For a fuller walkthrough aimed at homeowners, including an Egger colour lookup table, see our guide to repairing scratches, chips and screw holes.

When No Single Colour Matches: Blending Wax

You won't always know the board code, and woodgrain finishes rarely match one flat colour. This is where a kit earns its place over single crayons.

• Start from the base tone. Pick the shade closest to the main colour of the board, not the grain lines.
• Adjust in small amounts. Shave a little of a lighter or darker shade onto the applicator and work the two together with your fingers. Body warmth softens the wax and helps it mix.
• Lighten or darken with the extremes. The dark shade kit includes white and black alongside the wood tones, so you can shift any colour up or down.
• Fake the grain. On woodgrain, fill with the base shade, level it, then draw a fine line of a darker shade across the fill to follow the grain direction. Buff lightly.
• Test first. Try the blend on an offcut or inside a carcass before you touch a visible face.

Which Wax Kit for Which Job

If you fit both plain and wood-effect furniture, carry both kits. Buy the pair together and 10% comes off automatically in the cart.

For screw heads, KwikCaps are matched to Egger, Finsa and Kronospan decor codes. Wondering what else belongs in the van? Our KwikCaps van kit guide covers what to stock.

When Wax Isn't the Answer

Wax is a cosmetic fix. Knowing its limits protects your reputation as much as using it well.

• Lifting edge banding needs regluing. Wax under it will fail.
• Water-swollen chipboard won't go back. Replace the panel.
• Stripped screw holes need a plug, a repositioned fixing or a larger screw. Wax won't hold a screw.
• Large gouges on a door face in direct eye line are often better solved with a replacement door than a big fill.

Wax repairs are durable and can be re-tinted or lacquered over if needed. But if a customer will look at the spot every day, decide whether a repair is really the right call.

Frequently Asked Questions

What is snagging in furniture fitting?

Snagging is the final inspection before handover, looking for chips, scratches, exposed screw heads, pin holes and marks. Each snag is fixed on site so the customer signs off a finished job rather than calling you back.

Should I use a screw cap or a wax crayon to hide a screw?

Use a self-adhesive screw cap when a screw head is visible on a flat face. It's faster and gives a uniform finish. Use wax for holes, scratches and chips, or where a cap won't sit flat, such as on an edge.

Can you blend furniture wax crayons to match a colour?

Yes. Work small amounts of two shades together before filling. Start with the closest base colour, add lighter or darker wax a little at a time, and test on an offcut first.

Which KwikCaps wax kit do I need?

The Neutral kit covers whites, creams, greys and black for plain finishes. The Dark Shade kit covers oak, walnut, cherry, teak and other wood effects. Fitters working across both usually carry both, and buying the pair together takes 10% off automatically.

When should you not use wax to repair furniture?

When the damage is more than cosmetic. Peeling banding needs regluing, swollen chipboard needs replacing, and wax won't hold a screw or restore strength to a broken corner.

Do I need a tool to apply furniture wax crayons?

No, but an applicator makes a cleaner, faster job on site. The angled end presses wax into chips and edges, and the serrated edge levels the fill flush.

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