How to Strip Paint From a Door (and When to Call a Professional)

Quick answer

For one door with a few layers of old paint: a chemical paint stripper is usually the safest and most controllable DIY option, followed by careful sanding once most of the paint is lifted. Budget a full day per door if you want a proper job, including drying and cleanup time. Before you start on any door older than the 1960s, test for lead paint — sanding or heat-stripping lead paint releases dangerous dust and fumes.

Check for lead paint first

Lead paint was in common use in UK homes until it was restricted in 1978 for most household use, and it’s still found under later layers in a lot of Victorian and Edwardian properties across London and Kent. If your door is original to a pre-1960s building, or you simply don’t know its history, treat it as a possible lead-paint job:

• Don’t sand or heat-strip it dry without testing first — this is how lead dust becomes airborne and gets breathed in
• Cheap home lead-test kits are available and worth using if there’s any doubt
• If lead paint is confirmed, wet-stripping methods (chemical strippers, not sanding or open-flame heat guns) and proper dust control are strongly recommended — this is genuinely one of the cases worth paying a professional for

What you’ll need

• Chemical paint stripper (gel-type is easiest to control on vertical surfaces like a door)
• A stripping/scraping tool with a few different blade shapes for mouldings
• Wire wool or a stiff brush for panel detail and corners
• Sandpaper, various grits (medium to fine)
• White spirit or the stripper manufacturer’s recommended cleaner
• Dust sheets, gloves, and eye protection — a proper respirator mask if there’s any chance of lead paint or if you’re sanding at all
• Good ventilation — an open window and door, not a sealed room

Step by step

1. Protect the area. Lay dust sheets underneath and remove door furniture (handles, hinges if you’re taking the door off, letterbox) where practical — it’s much easier to strip a flat surface without working around fittings.

2. Apply the stripper. Follow the product’s instructions on thickness and dwell time — most need to sit for 20–40 minutes while it softens the paint layers. Don’t rush this step by scraping too early; the paint should be visibly bubbling or softened, not just wet.

3. Scrape off the softened paint. Work with the grain, using the right-shaped tool for flat panels versus mouldings and detail. Multiple layers may need a second application of stripper rather than forcing one pass.

4. Clean the surface. Wipe down with white spirit or the recommended cleaner to remove any residue — paint won’t adhere properly over leftover stripper.

5. Sand smooth. Once the bulk of the old paint is off, sand back to bare, smooth wood, working from a medium grit up to fine. This is also the point to fill any deep gouges or old fixing holes.

6. Prime and finish. Bare wood needs a proper primer/undercoat before your top coats — skipping this is one of the most common reasons a “fresh” door starts looking tired again within a year.

When it’s genuinely worth calling a professional

• Multiple doors, or a whole staircase of spindles and mouldings — the time adds up fast, and the finish quality gets harder to keep consistent across dozens of small surfaces
• Any confirmed or suspected lead paint — proper containment and disposal is worth paying for
• Doors with intricate period detail (raised panels, decorative mouldings) where getting into every corner without damaging the wood takes real practice
• You’re short on time — a rushed strip job, especially skipped drying time or incomplete sanding, is worse than not starting

If you’d rather hand it over entirely, see our door and window stripping service — we strip back to bare wood and repaint or refinish, including proper handling where lead paint is a possibility.