How to Oil an External Oak Door

Customer installed external oak door

Key Takeaways

Aspect Details
Frequency Treat before fitting, then every 2-3 years
Protection Use UV Protection Oil, 3-4 coats
Application Apply evenly, following wood grain
Drying Time 8-12 hours between coats
Recommended Product Impranol oils

Key Elements of Oiling an External Oak Door

  • Proper preparation of the door surface
  • Using the right tools and materials
  • Applying the oil correctly and evenly
  • Allowing adequate drying time
  • Regular maintenance and re-treatment

Our solid oak external doors are handcrafted for stability and warp resistance, but proper treatment and care are essential for longevity. Here's our guide to correctly treating your external oak doors.


Cottage Door

External Cottage Solid Oak Door

Classic cottage-style door with vertical planks


1930's Door

External 1930's Solid Oak Door

Elegant 1930's design with glazed panels


Suffolk Door

External Suffolk Solid Oak Door

Traditional Suffolk style with diamond glazing

You Will Need…

  • Sanding pads - 240 grit & 320 grit
  • Safety Goggles & Safety Mask
  • Latex or Safety Gloves
  • Micro Fiber Cloth or Tack Cloth
  • Varnish Paint Brush or Lint Free Cloths
  • External Treatment Oil (We recommend Impranol)
  • Masking Tape – For Glazed doors and Door Knobs
  • Dust Sheets
  • V Joint Sealer

Treating an External Oak Door

1. Ensure your working area is well ventilated before and after treatment.

2. Mask off any glazing or door furniture with masking tape.

3. Buff over any uneven areas with 240 grit sandpaper, especially after cutting for hinges and handles.

4. Wipe away dust with a micro fiber cloth, then use a damp lint-free cloth for remaining sawdust.

5. Ensure the wood is clean, dry, and free from moisture.

6. Use a UV Protection Oil, applying 3-4 coats for maximum protection.

7. Stir the oil well and apply the base layer evenly, following the wood grain.

8. Sand raised grain areas with 320 grit paper, then apply end grain sealer to exposed end grain.

9. Apply the first coat of colour-protecting coating.

10. Allow 8-12 hours drying time under normal weather conditions.

11. Seal inside lock and letterbox cutouts, behind hinges, top and bottom edges, and sides.

12. Treat both sides of the door simultaneously to maintain consistent moisture content.

13. Lightly sand uneven areas with 320 grit once the first coat is dry.

14. Apply V Joint sealer over the first coat in joint areas.

15. Apply final coats more generously.


Victorian Door

External Victorian 4 Panel Solid Oak Door

Classic Victorian design with four panels


Pattern 10 Door

External Pattern 10 Solid Oak Door

Modern Pattern 10 style with vertical glazing


French Door

External French Solid Oak Door

Elegant French door design for a bright entrance

What Oil Should I Use to Treat My External Oak Door?

We highly recommend Impranol oils. The Impranol External Treatment Value Pack includes:

  • Impranol colour protecting coating: Apply 3-4 coats. Quick-drying, typically dry to touch within 8 hours. Wait at least 12 hours before adding a second coat.

We do not recommend:

  • Water-based varnish or paint
  • Natural oils (e.g., Teak oil, Linseed oil, Danish oil)
  • Wax and Varnish

Safety Precautions

  • Ensure adequate ventilation
  • Wear goggles and mask when spraying
  • Avoid contact with skin and eyes
  • Cover electrical components to prevent short-circuiting
  • Keep away from naked flames, plants, and animals
  • Store properly and keep out of reach of children

Oak Door Storage and Care

For more information on storing your oak door upon arrival, check our blog post on oak door care.


Traditional Door

External Traditional Solid Oak Door

Traditional design with small glazed panel


Mexicano Door

External Mexicano Contemporary Solid Oak Door

Contemporary Mexicano style for a modern look


Suffolk Stable Door

External Suffolk Stable Solid Oak Door

Charming Suffolk stable door for versatile use

Our External Oak Door Range

Our external oak doors are made from 100% solid oak, handcrafted using a blend of modern and traditional techniques. Shop our entire range of quality external oak doors.

*Note: Claims on an external oak door not treated with our recommended methods will not be valid.*

Remember to choose the right external oak door for your home and treat it properly to ensure its longevity and beauty for years to come!

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