French Polish Restoration: Shellac Recoating Guide UK
Quick Answer: French polish is shellac dissolved in methylated spirit, built up in many thin coats (10–30) using a "rubber" pad of cotton wool wrapped in lint-free cloth. Restoration involves cleaning (white spirit and fine wire wool 0000), spot-repair, then "fadding" new polish over old surface. Full re-polish takes 8–20 hours per medium piece. Original Victorian/Georgian furniture requires this finish to retain provenance and value.
Summary
French polishing is the highest-grade traditional wood finish — used on Georgian and Victorian furniture, period staircases, pianos, and high-end joinery. Modern lacquers are tougher and faster but lack the depth, warmth and repairability of shellac. A polished surface refreshed by skilled hand has unrivalled clarity; an over-restored or stripped antique loses 30–60% of its value.
Restoration sits at the high-margin end of decorating: £50–£120 per hour rates are normal for skilled French polishers, and a single antique table can be a 15–30 hour job. Most general decorators don't take French polishing jobs because the technique requires apprenticeship; those who do command serious premium.
This article covers the basics for tradespeople who need to assess a job, quote responsibly, or sub-contract. It is not a full apprenticeship. Genuine high-value antique work should be referred to BAFRA (British Antique Furniture Restorers Association) approved restorers.
Key Facts
- Shellac source — Natural resin secreted by Kerria lacca insect on host trees, refined into flakes or buttons
- Solvent — Methylated spirit (denatured ethanol), 99% IMS preferred for trade
- Shellac grades — Garnet (dark, opaque), Button (medium amber), Blonde/Pale (light), Super Blonde (clearest, modern)
- Standard French polish concentration — 2–3 lb cut (2–3 lb shellac flakes per gallon = 250–375g per litre)
- Application rubber — Inner cotton wool wadding (100% cotton) wrapped in fine lint-free linen
- Drying time per coat — 15–30 minutes; full hardening 30 days
- Total coats for full polish — 10–30 thin coats over 3–4 sessions
- Burnishing — Final stage, friction with rubber and methylated spirit to remove pad lines and create depth
- Restoration value — Maintains 100% of antique value; stripping/relacquering can lose 30–60%
- BS 4965:1973 — Specification for woodworking materials (covers shellac)
- Lead content (old French polish) — Pre-1960 may contain lead-based driers; test before sanding
Quick Reference Table
Spending too long on quotes? squote turns a 2-minute voice recording into a professional quote.
Try squote free →| Service | Description | Time | Indicative Cost |
|---|---|---|---|
| Light refresh / wax & buff | Clean and renourish | 2–4 hrs | £80–£200 |
| Spot repair (water mark, scratch) | Localised re-polish | 4–8 hrs | £200–£500 |
| Full refresh (re-fad over existing) | New polish over cleaned old | 8–14 hrs | £400–£800 |
| Strip and re-polish | Strip old finish, re-polish | 15–25 hrs | £800–£1,800 |
| Antique table top restoration | Full surface restore | 12–20 hrs | £600–£1,500 |
| Piano lid restoration | High-traffic surface | 20–35 hrs | £1,200–£2,500 |
| Staircase handrail (3m) | Linear polish | 10–18 hrs | £500–£1,200 |
Detailed Guidance
Assessment first — value vs cost
Before quoting any French polish restoration:
- Identify the piece — Period, maker (look for stamps, labels), wood species. Use online auction catalogues (Christie's, Bonhams) or BAFRA referral.
- Estimate value — A £200 reproduction Victorian-style table doesn't warrant £800 French polish restoration. A genuine £8,000 William IV mahogany table does.
- Damage assessment — Surface marks only? Deep scratches into wood? Veneer lifting? Each adds complexity.
- Original finish? — If polish is original, full strip destroys value. Refresh only.
Refer to BAFRA for pieces over £3,000 estimated value. Their certified members carry insurance and provenance documentation.
The shellac itself
Buy quality flakes from specialist suppliers:
- Mylands — UK manufacturer since 1884, full range of pre-mixed and flake
- Liberon — Mid-range, widely available trade
- Chestnut Products — Hobby and trade
- W S Jenkins — Premium specialists
Mix from flakes for best results — pre-mixed shellac has limited shelf life (6–12 months from manufacture; check date). Flakes last 5+ years sealed.
To mix 2lb cut: 250g shellac flakes + 1 litre methylated spirit. Dissolve overnight in glass jar, agitating occasionally. Strain through fine muslin before use.
The rubber (pad)
Inner core: cotton wool (cosmetic grade, no synthetic). Size: tennis-ball to fist-size. Outer cover: linen or fine cotton lint-free cloth, folded around core forming pear-shape.
Charge the inner core with polish through the cover — never apply polish directly. The cover regulates release rate. As the rubber ages it darkens; a "broken-in" rubber is more controllable than new.
Store the rubber in a sealed jar with a few drops of meths between uses — keeps it pliable for weeks.
The technique stages
French polishing progresses through stages:
- Bodying up / fadding — Initial 10–15 coats with rubber in circular and figure-of-eight motions. Builds the polish film.
- Stiffening — Polish becomes harder; reduce shellac concentration with more meths.
- Spiriting off — Almost pure meths with a hint of polish; removes pad-lines and oil residue.
- Burnishing (optional) — Final friction with clean cotton to bring up mirror finish.
Between sessions: 24-hour rest minimum. Polish needs to harden before next layer adheres properly. Rushing creates "bloom" — milky cloudiness that's almost impossible to remove.
Common faults and fixes
- Pad lines (visible streaks) — Rubber too charged or moving too slowly. Lightly meths off and re-fad.
- Bloom (milky cloudiness) — Moisture in shellac or atmosphere. Apply more polish to displace, or strip back.
- Pinholes/skins — Trapped air or contamination. Sand smooth and refad.
- Heat marks — White rings from hot mugs/plates. Treat with iodine alcohol mix, then re-polish.
- Water marks (white rings) — Damp coaster damage. Often fixed with mayonnaise-and-cigarette-ash trick (oil + abrasive), then re-polish.
- Sun-faded patches — UV bleaching. Strip and re-polish.
Restoration vs full re-polish
Restoration (refresh over existing):
- Clean with mild solvent (white spirit and 0000 wire wool, then meths)
- Repair scratches with brush polish
- Apply new polish in thin coats over existing
- Final spirit-off
Full re-polish (strip first):
- Strip with methylated spirit (shellac dissolves in its own solvent — easy)
- Scrape and sand to bare wood
- Apply grain filler if needed (chalk and shellac paste tinted to match wood)
- Build up polish from scratch
- 20–30 hours work for medium piece
Restoration is the right answer for 80%+ of jobs. Strip only when finish is beyond repair (deep damage, severe sun bleaching, large veneer loss).
Working environment
French polish needs:
- Stable temperature — 18–22°C ideal
- Low humidity — Below 60% RH; high humidity causes bloom
- Dust-free — Closed workshop, no recent sanding
- Good lighting — Raking light shows defects
- No drafts — Drying acceleration causes streaks
Outdoor or site polishing is impractical. Take pieces to workshop for premium results.
Insurance and provenance
For high-value antiques (over £3,000):
- Photograph piece before work begins (multiple angles, raking light)
- Document any marks or labels
- Carry "all risks" insurance covering customer property in your possession (£100k+ cover)
- Provide written treatment record
- BAFRA members carry these as standard
A dropped antique table without insurance can financially destroy a small trade business.
Worked example — Victorian mahogany dining table refresh
- Survey, photograph, document: 1 hour
- Clean with meths and 0000 wire wool, full surface: 2 hours
- Spot-repair 3 minor scratches and 2 water rings: 2 hours
- Refresh polish over existing — 12 coats, 3 sessions: 8 hours
- Spirit-off and final burnish: 2 hours
- Wax finish (optional final): 1 hour
- Total labour: 16 hours @ £55/hr = £880
- Materials: £85 (shellac, meths, wax, cloths)
- Sub-total cost: £965
- 25% margin: £241
- Quoted price: £1,206 inc. VAT
Frequently Asked Questions
Can I sub-contract French polishing?
Yes — many general decorators do. Find a local BAFRA member or specialist polisher. Mark up 15–25% on their fee. The relationship benefits you for ongoing antique work.
Will French polish stand up to use?
It's softer than modern lacquer. Won't withstand hot mugs, alcohol spills, or heavy daily use without marks. Properly maintained (waxed quarterly, polished as needed) lasts decades. Use modern lacquer or polyurethane on heavy-use surfaces (kitchen, bar, dining table-top). Use French polish on lower-impact pieces (sideboards, displays, side tables).
Is there a faster modern equivalent?
Modern brush-on shellacs (Liberon French Polish in a tin) approximate the look in fewer coats. Quality is good but won't match true rubber-applied finish. For "looks French-polished" budget jobs, brush-on shellac is acceptable. For genuine restoration, no shortcut.
Can I strip French polish without damaging the wood?
Yes — methylated spirit dissolves shellac without affecting the wood. Apply with brush or cloth, polish lifts within minutes. Scrape with plastic scraper. Final clean with meths-soaked cloth. Wood emerges clean. This is the safest stripping method for any old wood finish.
What's the difference between French polish and shellac?
French polish IS shellac, but applied in a specific way (rubber, multi-coat). "Shellac" sold in tins is the same material — usually brushed on, gives a similar finish but less depth. True French polish is the method, not the material.
Regulations & Standards
BS 4965:1973 — Specification for woodworking materials (shellac purity)
BAFRA Code of Practice — British Antique Furniture Restorers Association standards
COSHH — Methylated spirit safety
CDM Regulations 2015 — Works on listed buildings/heritage
Listed Building Consent — Required for changes to fixed polished items in listed properties
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